
From daniele.ceccarelli@ericsson.com  Mon Jul  2 02:18:30 2012
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From: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>
To: CCAMP <ccamp@ietf.org>
Date: Mon, 2 Jul 2012 11:18:31 +0200
Thread-Topic: CCAMP Agenda Requests for IETF 84
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Subject: [CCAMP] CCAMP Agenda Requests for IETF 84
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Hi All,

- Agenda Requests -
Please send Dan and me (CC'ing the chairs) your requests for time on the wo=
rking
group agenda. Please let us have your requests by Friday, July 13th.

- Presentations -
If you are presenting slides please make sure you send them to us (CC'ing
the chairs) by Friday, July 27th.

- Key cut-off dates -
These are located at:
http://www.ietf.org/meeting/cutoff-dates-2012.html#IETF84

2012-07-09 (Monday): Internet Draft Cut-off for initial document (-00)
2012-07-16 (Monday): Internet Draft final submission (>00)

- Draft Agenda - (subject to change - final agenda to be posted on 2012-07-=
06)
http://datatracker.ietf.org/meeting/84/agenda.txt

Br,
Dan & Daniele



=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
DANIELE CECCARELLI
System & Technology - PDU Optical & Metro

Via L.Calda, 5
Genova, Italy
Phone +390106002512
Mobile +393346725750
daniele.ceccarelli@ericsson.com
www.ericsson.com

This Communication is Confidential. We only send and receive email on the b=
asis of the term set out at www.ericsson.com/email_disclaimer<http://www.er=
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<div style=3D"margin-top: 5pt; margin-bottom: 5pt; ">Hi All,<br>

<br>

- Agenda Requests -<br>

Please send Dan and me (CC'ing the chairs) your requests for time on the wo=
rking<br>

group agenda. Please let us have your requests by Friday, July 13th.<br>

<br>

- Presentations -<br>

If you are presenting slides please make sure you send them to us (CC'ing<b=
r>

the chairs) by Friday, July 27th. <br>

<br>

- Key cut-off dates -<br>

These are located at:<br>

<a href=3D"http://www.ietf.org/meeting/cutoff-dates-2012.html#IETF84"><font=
 color=3D"#0000FF"><u>http://www.ietf.org/meeting/cutoff-dates-2012.html#IE=
TF84</u></font></a></div>
<div style=3D"margin-top: 5pt; margin-bottom: 5pt; "><br>

2012-07-09 (Monday): Internet Draft Cut-off for initial document (-00)<br>

2012-07-16 (Monday): Internet Draft final submission (&gt;00)<br>

<br>

- Draft Agenda - (subject to change - final agenda to be posted on 2012-07-=
06)<br>

<a href=3D"http://datatracker.ietf.org/meeting/84/agenda.txt"><font color=
=3D"#0000FF"><u>http://datatracker.ietf.org/meeting/84/agenda.txt</u></font=
></a><br>

<br>

Br, </div>
<div style=3D"margin-top: 5pt; margin-bottom: 5pt; ">Dan &amp; Daniele</div=
>
<div>&nbsp;</div>
<div><br>

<font face=3D"Arial"> <br>

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D<br>

</font><font face=3D"Arial" color=3D"#333333"><b>DANIELE CECCARELLI </b></f=
ont><font face=3D"Times New Roman, sans-serif" size=3D"3" color=3D"#333333"=
>
<br>

</font><font face=3D"Arial" color=3D"#333333"><b>System &amp; Technology - =
PDU Optical &amp; Metro</b></font><font face=3D"Times New Roman, sans-serif=
" size=3D"3" color=3D"#333333"> </font></div>
<div><font face=3D"Times New Roman, sans-serif" size=3D"3" color=3D"#333333=
"><br>

<font face=3D"Arial" size=3D"2">Via L.Calda, 5<br>

Genova, Italy<br>

Phone &#43;390106002512<br>

Mobile &#43;393346725750<br>

daniele.ceccarelli@ericsson.com<br>

</font><a href=3D"www.ericsson.com"><font face=3D"Arial" size=3D"2" color=
=3D"#0000FF"><u>www.ericsson.com</u></font></a><font face=3D"Arial" size=3D=
"2"> </font> </font></div>
<div><font face=3D"Times New Roman, sans-serif" size=3D"3"><br>

<font face=3D"Arial" size=3D"1" color=3D"#333333">This Communication is Con=
fidential. We only send and receive email on the basis of the term set out =
at </font><a href=3D"http://www.ericsson.com/email_disclaimer"><font face=
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<div><font face=3D"Times New Roman, sans-serif" size=3D"3">&nbsp;</font></d=
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<div><font face=3D"Arial, sans-serif">&nbsp;</font></div>
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From giomarti@cisco.com  Thu Jul  5 03:18:48 2012
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Subject: [CCAMP] Optical interface class: proposed changes draft-ietf-ccamp-rwa-wson-encode-14
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Dear ccamp,

Here the proposed encoding changes for wson-encode according to optical 
interface class (draft-martinelli-wson-interface-class-02). This changes 
goes together with already proposed changes on 
draft-ietf-ccamp-rwa-info. All changes are in  section 5 " Resource 
Properties Encoding".


Change #1) In section 5.1. Resource Block Information Sub-TLV


OLD:

        0                   1                   2                   3
        0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |                     RB Set Field                              |
       :                                                               :
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |I|E|                         Reserved                          |
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |                 Modulation Type List Sub-Sub-TLV  (opt)       |
       :                                                               :
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |                 FEC Type List Sub-Sub-TLV    (opt)            |
       :                                                               :
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |         Input Client Signal Type Sub-Sub-TLV      (opt)       |
       :                                                               :
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |         Input Bit Rate Range List  Sub-Sub-TLV (opt)          |
       :                                                               :
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |         Processing Capabilities List Sub-Sub-TLV (opt)        |
       :                                                               :
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+


NEW:

        0                   1                   2                   3
        0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |                     RB Set Field                              |
       :                                                               :
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |I|E|                         Reserved                          |
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |       Optical Interface Class List(s) Sub-Sub-TLV  (opt)      |
       :                                                               :
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |         Input Client Signal Type Sub-Sub-TLV      (opt)       |
       :                                                               :
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |         Processing Capabilities List Sub-Sub-TLV (opt)        |
       :                                                               :
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+





Change #2

OLD:
Section 5.2, Section 5.3, Section 5.4

NEW:

Section 5.2 "Optical Interface Class List(s) Sub-Sub-TLV"

The list of Optical Interface Class sub-sub-TLV  has the following format:

       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |       Type    |    Length     |       Reserved            |I|E|
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
       |       Optical Interface Classes                               |
       :                                                               :
       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+


The following I and E combination are defined:
I    E
0   0   Invalid
1   0   Optical Interface Class List acceptable in input
0   1   Optical Interface Class List available in output
1   1   Optical Interface Class List available on both input and output.

The Resource Block  MAY contain one or more lists according to 
input/output flags. The Optical Interface Class format is defined within 
[x-ref-tbd].


---

With one note: type/length over 16 bits is just a proposal since the tlv 
is used only in wson. Trivial modification to 32 bits if we prefer.

Cheers
G


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<html>
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    <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1">
  </head>
  <body bgcolor="#FFFFFF" text="#000000">
    Dear ccamp,<br>
    <br>
    Here the proposed encoding changes for wson-encode according to
    optical interface class (draft-martinelli-wson-interface-class-02).
    This changes goes together with already proposed changes on
    draft-ietf-ccamp-rwa-info. All changes are in&nbsp; section 5 "
    <meta http-equiv="content-type" content="text/html;
      charset=ISO-8859-1">
    Resource Properties Encoding".<br>
    <br>
    <br>
    <meta http-equiv="content-type" content="text/html;
      charset=ISO-8859-1">
    Change #1) In section 5.1. Resource Block Information Sub-TLV<br>
    <br>
    <br>
    OLD:<br>
    <meta http-equiv="content-type" content="text/html;
      charset=ISO-8859-1">
    <pre>       0                   1                   2                   3
       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                     RB Set Field                              |
      :                                                               :
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |I|E|                         Reserved                          |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                 Modulation Type List Sub-Sub-TLV  (opt)       |
      :                                                               :
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                 FEC Type List Sub-Sub-TLV    (opt)            |
      :                                                               :
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |         Input Client Signal Type Sub-Sub-TLV      (opt)       |
      :                                                               :
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |         Input Bit Rate Range List  Sub-Sub-TLV (opt)          |
      :                                                               :
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |         Processing Capabilities List Sub-Sub-TLV (opt)        |
      :                                                               :
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

</pre>
    <br>
    NEW:<br>
    <meta http-equiv="content-type" content="text/html;
      charset=ISO-8859-1">
    <pre>       0                   1                   2                   3
       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |                     RB Set Field                              |
      :                                                               :
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |I|E|                         Reserved                          |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |       Optical Interface Class List(s) Sub-Sub-TLV  (opt)      |
      :                                                               :
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |         Input Client Signal Type Sub-Sub-TLV      (opt)       |
      :                                                               :
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |         Processing Capabilities List Sub-Sub-TLV (opt)        |
      :                                                               :
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

</pre>
    <br>
    <br>
    <br>
    <br>
    Change #2<br>
    <br>
    OLD:<br>
    Section 5.2, Section 5.3, Section 5.4 <br>
    <br>
    NEW: <br>
    <br>
    Section 5.2 "Optical Interface Class List(s) Sub-Sub-TLV"<br>
    <br>
    The list of Optical Interface Class sub-sub-TLV&nbsp; has the following
    format:<br>
    <br>
    <pre>      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |       Type    |    Length     |       Reserved            |I|E|   
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |       Optical Interface Classes                               |
      :                                                               :
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
</pre>
    <br>
    The following I and E combination are defined:<br>
    I&nbsp;&nbsp;&nbsp; E<br>
    0 &nbsp; 0&nbsp;&nbsp; Invalid<br>
    1&nbsp;&nbsp; 0&nbsp;&nbsp; Optical Interface Class List acceptable in input<br>
    0&nbsp;&nbsp; 1&nbsp;&nbsp; Optical Interface Class List available in output<br>
    1&nbsp;&nbsp; 1&nbsp;&nbsp; Optical Interface Class List available on both input and
    output.<br>
    &nbsp;<br>
    The Resource Block&nbsp; MAY contain one or more lists according to
    input/output flags. The Optical Interface Class format is defined
    within [x-ref-tbd].<br>
    <br>
    <br>
    ---<br>
    <br>
    With one note: type/length over 16 bits is just a proposal since the
    tlv is used only in wson. Trivial modification to 32 bits if we
    prefer.<br>
    <br>
    Cheers<br>
    G<br>
    <br>
  </body>
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--------------010408060906010608080602--

From lberger@labn.net  Thu Jul  5 05:01:44 2012
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Date: Thu, 05 Jul 2012 08:01:55 -0400
From: Lou Berger <lberger@labn.net>
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Subject: [CCAMP] Fwd: I-D Action: draft-berger-ccamp-swcaps-update-02.txt
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All,
	We have removed the ITH (old ILH) field from this draft as it seemed to
us that the general sw caps changes (deprecating PSC2->4, revising
definition of SW caps/type) reflected general WG agreement while ITH was
too immature to have the same level of support.

Lou (as co-author)

-------- Original Message --------
Subject: I-D Action: draft-berger-ccamp-swcaps-update-02.txt
Date: Wed, 04 Jul 2012 09:22:12 -0700
From: internet-drafts@ietf.org
Reply-To: internet-drafts@ietf.org
To: i-d-announce@ietf.org


A New Internet-Draft is available from the on-line Internet-Drafts
directories.


	Title           : Revised Definition of The GMPLS Switching Capability
and Type Fields
	Author(s)       : Lou Berger
                          Julien Meuric
	Filename        : draft-berger-ccamp-swcaps-update-02.txt
	Pages           : 9
	Date            : 2012-07-04

Abstract:
   GMPLS provides control for multiple switching technologies, and
   hierarchical switching within a technology.  GMPLS routing and
   signaling use common values to indicate switching technology type.
   These values are carried in routing in the Switching Capability
   field, and in signaling in the Switching Type field. While the
   values using in these fields are the primary indicators of the
   technology and hierarchy level being controlled, the values are
   not consistently defined and used across the different
   technologies supported by GMPLS.  This document is intended to
   resolve the inconsistent definition and use of the Switching
   Capability and Type fields by narrowly scoping the meaning and use
   of the fields.  This document updates any document that uses the
   GMPLS Switching Capability and Types fields, in particular RFC
   3471, RFC 4202, RFC 4203, and RFC 5307.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-berger-ccamp-swcaps-update

There's also a htmlized version available at:
http://tools.ietf.org/html/draft-berger-ccamp-swcaps-update-02

A diff from previous version is available at:
http://tools.ietf.org/rfcdiff?url2=draft-berger-ccamp-swcaps-update-02


Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/

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--------------080909080003090708050008
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Hi Greg,

pls see my other mail for proposed encoding changes. I'll try to clarify 
your doubts here below


On 6/29/12 19:51 , Greg Bernstein wrote:
> Hi Giovanni, I'm still not sure what problem you are trying to solve.


the problem is "signal compatibility", I'm sure you know already all 
ccamp references for this.

The current solution in ccamp drafts list explicitly all parameters 
required today to assess the compatibility and has two main drawbacks:
1. Explicit values taken by parameters are (very) technology dependents.
2. The list of parameters is per-defined and works today, we are not 
granted for future technology evolution (e.g. flexspectrum already 
knocking at the doors,  other technology evolutions? ).

I'll further clarify below but let me remind an analogy: SRLGs defines 
what they should represent and the field format (e.g. 32 bits, etc.), 
hey do not defines specific bit encoding (within those 32 bits) or 
partitioning you may use. To some extent, the Optical Interface Class 
mimic this idea.

Or if you want a programmer analogy, the Optical Interface Class is like 
a pointer. Instead of carry around explicit structures you move only 
pointers (reference to).



> Can you give us a specific example within the context of 
> non-impairment WSON. Then we can work to see if anything needs to be 
> changed in the existing documents. The current information within the 
> WSON documents has been thoroughly reviewed. We can't remove 
> information and replace it with less specific information from the 
> compatibility perspective.  If you need additional information added 
> for your application, please furnish an example.
>


a) FEC values can be encoded according to section 5.3 of 
draft-ietf-ccamp-rwa-wson-encode and there are 10 values defined for FecID
b) Modulation formats encoded according to section 5.2, only 5 values 
defined.

- what if another FecID (e.g. =11) or an additional Modulation ID (e.g. 
= 6) is required (i.e. standardized) ? What the impacts on all protocol 
extensions using  this encoding?
- Is there any cross compatibility among differend FecID and 
ModulationID? It will never happen in the future?

If you turn this in Optical Interface Classes, you may want to follow 
the example on draft-martinelli-wson-interface-class-02 section 3.2

The Optical Interface Class does not simplify the problem as a whole but 
it will simplify wson protocol extensions. In addition the OIC concept 
is fully compatible with the ITU application code, we spent time 
discussing this but ITU application code is one instance (!) of the 
optical interface class.

Hope this helps

Cheer
G









> If changes are needed we will incorporate them, as we have done in the 
> past.
>
> Best Regards
> Greg B.
> On 6/28/2012 1:44 AM, Fatai Zhang wrote:
>>
>> Hi Giovanni,
>>
>> <snipped>
>>
>>
>> [GM] In current draft the only requirement to assess the signal 
>> compatibility is  that two interface having the same OIC value are 
>> compatible. So WSON protocols does not need to explicitly list 
>> optical parameters and their value. We can probably provide some 
>> examples in an appendix about how you can map them but the OIC 
>> concept per se does not depend on this.
>>
>> [Fatai] How magic the OIC is. I really want to see how this magic 
>> would happen if there is no need to list optical parameters and their 
>> value.
>>
>>
>> Cheers
>> G
>>
>> Thanks
>>
>> Fatai
>>
>>
>>
>> _______________________________________________
>> CCAMP mailing list
>> CCAMP@ietf.org
>> https://www.ietf.org/mailman/listinfo/ccamp
>
>
> -- 
> ===================================================
> Dr Greg Bernstein, Grotto Networking (510) 573-2237
>
>
>
> _______________________________________________
> CCAMP mailing list
> CCAMP@ietf.org
> https://www.ietf.org/mailman/listinfo/ccamp



--------------080909080003090708050008
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<html>
  <head>
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  <body bgcolor="#FFFFFF" text="#000000">
    Hi Greg,<br>
    <br>
    pls see my other mail for proposed encoding changes. I'll try to
    clarify your doubts here below<br>
    <br>
    <br>
    <div class="moz-cite-prefix">On 6/29/12 19:51 , Greg Bernstein
      wrote:<br>
    </div>
    <blockquote cite="mid:4FEDEB12.5060105@grotto-networking.com"
      type="cite">
      <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
      <div class="moz-cite-prefix">Hi Giovanni, I'm still not sure what
        problem you are trying to solve.  </div>
    </blockquote>
    <br>
    <br>
    the problem is "signal compatibility", I'm sure you know already all
    ccamp references for this.<br>
    <br>
    The current solution in ccamp drafts list explicitly all parameters
    required today to assess the compatibility and has two main
    drawbacks:<br>
    1. Explicit values taken by parameters are (very) technology
    dependents.<br>
    2. The list of parameters is per-defined and works today, we are not
    granted for future technology evolution (e.g. flexspectrum already
    knocking at the doors,  other technology evolutions? ).<br>
    <br>
    I'll further clarify below but let me remind an analogy: SRLGs
    defines what they should represent and the field format (e.g. 32
    bits, etc.), hey do not defines specific bit encoding (within those
    32 bits) or partitioning you may use. To some extent, the Optical
    Interface Class mimic this idea.<br>
    <br>
    Or if you want a programmer analogy, the Optical Interface Class is
    like a pointer. Instead of carry around explicit structures you move
    only pointers (reference to).<br>
    <br>
    <br>
    <br>
    <blockquote cite="mid:4FEDEB12.5060105@grotto-networking.com"
      type="cite">
      <div class="moz-cite-prefix">Can you give us a specific example
        within the context of non-impairment WSON. Then we can work to
        see if anything needs to be changed in the existing documents.
        The current information within the WSON documents has been
        thoroughly reviewed. We can't remove information and replace it
        with less specific information from the compatibility
        perspective.  If you need additional information added for your
        application, please furnish an example.<br>
        <br>
      </div>
    </blockquote>
    <br>
    <br>
    a) FEC values can be encoded according to section 5.3 of
    draft-ietf-ccamp-rwa-wson-encode and there are 10 values defined for
    FecID<br>
    b) Modulation formats encoded according to section 5.2, only 5
    values defined. <br>
    <br>
    - what if another FecID (e.g. =11) or an additional Modulation ID
    (e.g. = 6) is required (i.e. standardized) ? What the impacts on all
    protocol extensions using  this encoding?<br>
    - Is there any cross compatibility among differend FecID and
    ModulationID? It will never happen in the future?<br>
    <br>
    If you turn this in Optical Interface Classes, you may want to
    follow the example on draft-martinelli-wson-interface-class-02
    section 3.2<br>
    <br>
    The Optical Interface Class does not simplify the problem as a whole
    but it will simplify wson protocol extensions. In addition the OIC
    concept is fully compatible with the ITU application code, we spent
    time discussing this but ITU application code is one instance (!) of
    the optical interface class.<br>
    <br>
    Hope this helps<br>
    <br>
    Cheer<br>
    G<br>
    <br>
     <br>
    <br>
    <br>
    <br>
    <br>
    <br>
    <br>
    <br>
    <blockquote cite="mid:4FEDEB12.5060105@grotto-networking.com"
      type="cite">
      <div class="moz-cite-prefix"> If changes are needed we will
        incorporate them, as we have done in the past.<br>
        <br>
        Best Regards<br>
        Greg B.<br>
        On 6/28/2012 1:44 AM, Fatai Zhang wrote:<br>
      </div>
      <blockquote
cite="mid:F82A4B6D50F9464B8EBA55651F541CF82CC3B2FF@SZXEML520-MBX.china.huawei.com"
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          <p class="MsoNormal"><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
              lang="EN-US">Hi Giovanni,<o:p></o:p></span></p>
          <p class="MsoNormal"><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
              lang="EN-US"><o:p> </o:p></span></p>
          <p class="MsoNormal"><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
              lang="EN-US">&lt;snipped&gt;<o:p></o:p></span></p>
          <p class="MsoNormal"
            style="text-align:justify;text-justify:inter-ideograph"><span
              style="font-family:宋体" lang="EN-US"><br>
              [GM] In current draft the only requirement to assess the
              signal compatibility is  that two interface having the
              same OIC value are compatible. So WSON protocols does not
              need to explicitly list optical parameters and their
              value. We can probably provide some examples in an
              appendix about how you can map them but the OIC concept
              per se does not depend on this. <br>
              <br>
            </span><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
              lang="EN-US"><o:p></o:p></span></p>
          <p class="MsoNormal"
            style="text-align:justify;text-justify:inter-ideograph"><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
              lang="EN-US">[Fatai] How magic the OIC is. I really want
              to see how this magic would happen if there is no need to
              list optical parameters and their value. <o:p></o:p></span></p>
          <p class="MsoNormal"
            style="text-align:justify;text-justify:inter-ideograph"><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
              lang="EN-US"><o:p> </o:p></span></p>
          <p class="MsoNormal"
            style="text-align:justify;text-justify:inter-ideograph"><span
              style="font-family:宋体" lang="EN-US"><br>
              Cheers<br>
              G<br>
              <br>
            </span><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
              lang="EN-US">Thanks<o:p></o:p></span></p>
          <p class="MsoNormal"
            style="text-align:justify;text-justify:inter-ideograph"><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
              lang="EN-US"><o:p> </o:p></span></p>
          <p class="MsoNormal"
            style="text-align:justify;text-justify:inter-ideograph"><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
              lang="EN-US">Fatai<o:p></o:p></span></p>
          <p class="MsoNormal"><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
              lang="EN-US"><o:p> </o:p></span></p>
          <p class="MsoNormal"><span style="font-family:宋体" lang="EN-US"><o:p> </o:p></span></p>
        </div>
        <br>
        <fieldset class="mimeAttachmentHeader"></fieldset>
        <br>
        <pre wrap="">_______________________________________________
CCAMP mailing list
<a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="mailto:CCAMP@ietf.org">CCAMP@ietf.org</a>
<a moz-do-not-send="true" class="moz-txt-link-freetext" href="https://www.ietf.org/mailman/listinfo/ccamp">https://www.ietf.org/mailman/listinfo/ccamp</a>
</pre>
      </blockquote>
      <br>
      <br>
      <pre class="moz-signature" cols="72">-- 
===================================================
Dr Greg Bernstein, Grotto Networking (510) 573-2237

</pre>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <br>
      <pre wrap="">_______________________________________________
CCAMP mailing list
<a class="moz-txt-link-abbreviated" href="mailto:CCAMP@ietf.org">CCAMP@ietf.org</a>
<a class="moz-txt-link-freetext" href="https://www.ietf.org/mailman/listinfo/ccamp">https://www.ietf.org/mailman/listinfo/ccamp</a>
</pre>
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    <br>
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From: Fatai Zhang <zhangfatai@huawei.com>
To: "ccamp@ietf.org" <ccamp@ietf.org>
Thread-Topic: Updates on OTN signaling draft 
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Subject: [CCAMP] Updates on OTN signaling draft
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Hi all,



We are updating OTN signaling draft. Since we had lots of discussion on the=
 TSG stuff in the list, let's converge on the solution.



Based on the previous discussion between Lou and co-authors, the authors pr=
efer the following changes:



(1) Extending GPID to carry TSG in signaling, since its purpose in signalin=
g is to ensure that endpoints of the LSP being signaled have a consistent v=
iew of the TSG to be offered to its clients and LSP endpoint consistency is=
 the purpose for which the GPID was designed.



(2)Extending LSPA to carry hierarchy information (ie., Type=3D2 - Hierarchy=
 TLV).



Any comments?





Thanks



Fatai






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<p class=3D"MsoPlainText"><span lang=3D"EN-US">Hi all,<o:p></o:p></span></p=
>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">We are updating OTN signalin=
g draft. Since we had lots of discussion on the TSG stuff in the list, let'=
s converge on the solution.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Based on the previous discus=
sion between Lou and co-authors, the authors prefer the following changes:<=
o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">(1) Extending GPID to carry =
TSG in signaling, since its purpose in signaling is to ensure that endpoint=
s of the LSP being signaled have a consistent view of the TSG to be offered=
 to its clients and LSP endpoint consistency
 is the purpose for which the GPID was designed.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">(2)Extending LSPA to carry h=
ierarchy information (ie., Type=3D2 - Hierarchy TLV).<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Any comments?<o:p></o:p></sp=
an></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Thanks<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Fatai<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
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A New Internet-Draft is available from the on-line Internet-Drafts director=
ies.
 This draft is a work item of the Common Control and Measurement Plane Work=
ing Group of the IETF.

	Title           : General Network Element Constraint Encoding for GMPLS Co=
ntrolled Networks
	Author(s)       : Greg M. Bernstein
                          Young Lee
                          Dan Li
                          Wataru Imajuku
	Filename        : draft-ietf-ccamp-general-constraint-encode-08.txt
	Pages           : 29
	Date            : 2012-07-06

Abstract:
   Generalized Multiprotocol Label Switching can be used to control a
   wide variety of technologies. In some of these technologies network
   elements and links may impose additional routing constraints such as
   asymmetric switch connectivity, non-local label assignment, and
   label range limitations on links.

   This document provides efficient, protocol-agnostic encodings for
   general information elements representing connectivity and label
   constraints as well as label availability. It is intended that
   protocol-specific documents will reference this memo to describe how
   information is carried for specific uses.





The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-ccamp-general-constraint-encode

There's also a htmlized version available at:
http://tools.ietf.org/html/draft-ietf-ccamp-general-constraint-encode-08

A diff from previous version is available at:
http://tools.ietf.org/rfcdiff?url2=3Ddraft-ietf-ccamp-general-constraint-en=
code-08


Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/


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A New Internet-Draft is available from the on-line Internet-Drafts director=
ies.
 This draft is a work item of the Common Control and Measurement Plane Work=
ing Group of the IETF.

	Title           : OSPF-TE Extensions for General Network Element Constrain=
ts
	Author(s)       : Fatai Zhang
                          Young Lee
                          Jianrui Han
                          Greg Bernstein
                          Yunbin Xu
	Filename        : draft-ietf-ccamp-gmpls-general-constraints-ospf-te-04.txt
	Pages           : 13
	Date            : 2012-07-06

Abstract:
   Generalized Multiprotocol Label Switching can be used to control a
   wide variety of technologies including packet switching (e.g., MPLS),
   time-division (e.g., SONET/SDH, OTN), wavelength (lambdas), and
   spatial switching (e.g., incoming port or fiber to outgoing port or
   fiber). In some of these technologies network elements and links may
   impose additional routing constraints such as asymmetric switch
   connectivity, non-local label assignment, and label range
   limitations on links. This document describes OSPF routing protocol
   extensions to support these kinds of constraints under the control
   of Generalized MPLS (GMPLS).



The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-ccamp-gmpls-general-constraints=
-ospf-te

There's also a htmlized version available at:
http://tools.ietf.org/html/draft-ietf-ccamp-gmpls-general-constraints-ospf-=
te-04

A diff from previous version is available at:
http://tools.ietf.org/rfcdiff?url2=3Ddraft-ietf-ccamp-gmpls-general-constra=
ints-ospf-te-04


Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/


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Giovanni, you are still removing specific information that we need to 
determine signal compatibility (modulation type and FEC type).  GMPLS 
RFCs have always been able to deal with incremental advances in 
technology via code point assignment. In addition the drafts provide for 
vendor specific encodings of information.  See below for detailed 
response to your comments.
Greg
On 7/5/2012 5:06 AM, Giovanni MARTINELLI wrote:
> Hi Greg,
>
> pls see my other mail for proposed encoding changes. I'll try to 
> clarify your doubts here below
>
>
> On 6/29/12 19:51 , Greg Bernstein wrote:
>> Hi Giovanni, I'm still not sure what problem you are trying to solve.
>
>
> the problem is "signal compatibility", I'm sure you know already all 
> ccamp references for this.
>
> The current solution in ccamp drafts list explicitly all parameters 
> required today to assess the compatibility and has two main drawbacks:
> 1. Explicit values taken by parameters are (very) technology dependents.
> 2. The list of parameters is per-defined and works today, we are not 
> granted for future technology evolution (e.g. flexspectrum already 
> knocking at the doors,  other technology evolutions? ).
--> GMPLS and IETF has dealt with these kind of problems many times. 
This is why code point registries are established with IANA. A new 
technology gets a new code point.
>
> I'll further clarify below but let me remind an analogy: SRLGs defines 
> what they should represent and the field format (e.g. 32 bits, etc.), 
> hey do not defines specific bit encoding (within those 32 bits) or 
> partitioning you may use. To some extent, the Optical Interface Class 
> mimic this idea.
--->  We started with general 32 bit labels, and then went and 
specialized to SONET/SDH labels, G.709 labels, G.694 labels, etc...
>
> Or if you want a programmer analogy, the Optical Interface Class is 
> like a pointer. Instead of carry around explicit structures you move 
> only pointers (reference to).
---> But this doesn't help interoperability.  Note that we provided a 
general mechanism for modulation types and FEC.
>
>
>
>> Can you give us a specific example within the context of 
>> non-impairment WSON. Then we can work to see if anything needs to be 
>> changed in the existing documents. The current information within the 
>> WSON documents has been thoroughly reviewed. We can't remove 
>> information and replace it with less specific information from the 
>> compatibility perspective.  If you need additional information added 
>> for your application, please furnish an example.
>>
>
>
> a) FEC values can be encoded according to section 5.3 of 
> draft-ietf-ccamp-rwa-wson-encode and there are 10 values defined for FecID
> b) Modulation formats encoded according to section 5.2, only 5 values 
> defined.
>
> - what if another FecID (e.g. =11) or an additional Modulation ID 
> (e.g. = 6) is required (i.e. standardized) ? What the impacts on all 
> protocol extensions using  this encoding?
--> Use either (a) the vendor specific encoding format we've provided, 
(b) allocate another code point there are thousands of them available.
> - Is there any cross compatibility among differend FecID and 
> ModulationID? It will never happen in the future?
--> If say some type of Trellis (combined modulation/FEC method) coding 
is used then one can just define the modulation format code points. If 
there are additional ECC options that can go into the FEC code points.  
If this  standardized at ITU. Otherwise you can just use the vendor 
specific encoding method that is provided in the draft.
>
> If you turn this in Optical Interface Classes, you may want to follow 
> the example on draft-martinelli-wson-interface-class-02 section 3.2
>
> The Optical Interface Class does not simplify the problem as a whole 
> but it will simplify wson protocol extensions. In addition the OIC 
> concept is fully compatible with the ITU application code, we spent 
> time discussing this but ITU application code is one instance (!) of 
> the optical interface class.
--> Once again we only extract what is needed for the control plane from 
ITU standards.  For compatibility we still need modulation type (ITU-T's 
optical tributary class) and FEC.
>
> Hope this helps
>
> Cheer
> G
>
>
>
>
>
>
>
>
>
>> If changes are needed we will incorporate them, as we have done in 
>> the past.
>>
>> Best Regards
>> Greg B.
>> On 6/28/2012 1:44 AM, Fatai Zhang wrote:
>>>
>>> Hi Giovanni,
>>>
>>> <snipped>
>>>
>>>
>>> [GM] In current draft the only requirement to assess the signal 
>>> compatibility is  that two interface having the same OIC value are 
>>> compatible. So WSON protocols does not need to explicitly list 
>>> optical parameters and their value. We can probably provide some 
>>> examples in an appendix about how you can map them but the OIC 
>>> concept per se does not depend on this.
>>>
>>> [Fatai] How magic the OIC is. I really want to see how this magic 
>>> would happen if there is no need to list optical parameters and 
>>> their value.
>>>
>>>
>>> Cheers
>>> G
>>>
>>> Thanks
>>>
>>> Fatai
>>>
>>>
>>>
>>> _______________________________________________
>>> CCAMP mailing list
>>> CCAMP@ietf.org
>>> https://www.ietf.org/mailman/listinfo/ccamp
>>
>>
>> -- 
>> ===================================================
>> Dr Greg Bernstein, Grotto Networking (510) 573-2237
>>
>>
>>
>> _______________________________________________
>> CCAMP mailing list
>> CCAMP@ietf.org
>> https://www.ietf.org/mailman/listinfo/ccamp
>
>
>
>
> _______________________________________________
> CCAMP mailing list
> CCAMP@ietf.org
> https://www.ietf.org/mailman/listinfo/ccamp


-- 
===================================================
Dr Greg Bernstein, Grotto Networking (510) 573-2237


--------------080704030807070505090505
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: 8bit

<html>
  <head>
    <meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
  </head>
  <body bgcolor="#FFFFFF" text="#000000">
    <div class="moz-cite-prefix">Giovanni, you are still removing
      specific information that we need to determine signal
      compatibility (modulation type and FEC type).  GMPLS RFCs have
      always been able to deal with incremental advances in technology
      via code point assignment. In addition the drafts provide for
      vendor specific encodings of information.  See below for detailed
      response to your comments.<br>
      Greg<br>
      On 7/5/2012 5:06 AM, Giovanni MARTINELLI wrote:<br>
    </div>
    <blockquote cite="mid:4FF58352.8030102@cisco.com" type="cite">
      <meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
      Hi Greg,<br>
      <br>
      pls see my other mail for proposed encoding changes. I'll try to
      clarify your doubts here below<br>
      <br>
      <br>
      <div class="moz-cite-prefix">On 6/29/12 19:51 , Greg Bernstein
        wrote:<br>
      </div>
      <blockquote cite="mid:4FEDEB12.5060105@grotto-networking.com"
        type="cite">
        <meta http-equiv="Content-Type" content="text/html;
          charset=UTF-8">
        <div class="moz-cite-prefix">Hi Giovanni, I'm still not sure
          what problem you are trying to solve.  </div>
      </blockquote>
      <br>
      <br>
      the problem is "signal compatibility", I'm sure you know already
      all ccamp references for this.<br>
      <br>
      The current solution in ccamp drafts list explicitly all
      parameters required today to assess the compatibility and has two
      main drawbacks:<br>
      1. Explicit values taken by parameters are (very) technology
      dependents.<br>
      2. The list of parameters is per-defined and works today, we are
      not granted for future technology evolution (e.g. flexspectrum
      already knocking at the doors,  other technology evolutions? ).<br>
    </blockquote>
    --&gt; GMPLS and IETF has dealt with these kind of problems many
    times. This is why code point registries are established with IANA.
    A new technology gets a new code point.  <br>
    <blockquote cite="mid:4FF58352.8030102@cisco.com" type="cite"> <br>
      I'll further clarify below but let me remind an analogy: SRLGs
      defines what they should represent and the field format (e.g. 32
      bits, etc.), hey do not defines specific bit encoding (within
      those 32 bits) or partitioning you may use. To some extent, the
      Optical Interface Class mimic this idea.<br>
    </blockquote>
    ---&gt;  We started with general 32 bit labels, and then went and
    specialized to SONET/SDH labels, G.709 labels, G.694 labels, etc...<br>
    <blockquote cite="mid:4FF58352.8030102@cisco.com" type="cite"> <br>
      Or if you want a programmer analogy, the Optical Interface Class
      is like a pointer. Instead of carry around explicit structures you
      move only pointers (reference to).<br>
    </blockquote>
    ---&gt; But this doesn't help interoperability.  Note that we
    provided a general mechanism for modulation types and FEC.  <br>
    <blockquote cite="mid:4FF58352.8030102@cisco.com" type="cite"> <br>
      <br>
      <br>
      <blockquote cite="mid:4FEDEB12.5060105@grotto-networking.com"
        type="cite">
        <div class="moz-cite-prefix">Can you give us a specific example
          within the context of non-impairment WSON. Then we can work to
          see if anything needs to be changed in the existing documents.
          The current information within the WSON documents has been
          thoroughly reviewed. We can't remove information and replace
          it with less specific information from the compatibility
          perspective.  If you need additional information added for
          your application, please furnish an example.<br>
          <br>
        </div>
      </blockquote>
      <br>
      <br>
      a) FEC values can be encoded according to section 5.3 of
      draft-ietf-ccamp-rwa-wson-encode and there are 10 values defined
      for FecID<br>
      b) Modulation formats encoded according to section 5.2, only 5
      values defined. <br>
      <br>
      - what if another FecID (e.g. =11) or an additional Modulation ID
      (e.g. = 6) is required (i.e. standardized) ? What the impacts on
      all protocol extensions using  this encoding?<br>
    </blockquote>
    --&gt; Use either (a) the vendor specific encoding format we've
    provided, (b) allocate another code point there are thousands of
    them available.<br>
    <blockquote cite="mid:4FF58352.8030102@cisco.com" type="cite"> - Is
      there any cross compatibility among differend FecID and
      ModulationID? It will never happen in the future?<br>
    </blockquote>
    --&gt; If say some type of Trellis (combined modulation/FEC method)
    coding is used then one can just define the modulation format code
    points. If there are additional ECC options that can go into the FEC
    code points.  If this  standardized at ITU. Otherwise you can just
    use the vendor specific encoding method that is provided in the
    draft.<br>
    <blockquote cite="mid:4FF58352.8030102@cisco.com" type="cite"> <br>
      If you turn this in Optical Interface Classes, you may want to
      follow the example on draft-martinelli-wson-interface-class-02
      section 3.2<br>
      <br>
      The Optical Interface Class does not simplify the problem as a
      whole but it will simplify wson protocol extensions. In addition
      the OIC concept is fully compatible with the ITU application code,
      we spent time discussing this but ITU application code is one
      instance (!) of the optical interface class.<br>
    </blockquote>
    --&gt; Once again we only extract what is needed for the control
    plane from ITU standards.  For compatibility we still need
    modulation type (ITU-T's optical tributary class) and FEC.<br>
    <blockquote cite="mid:4FF58352.8030102@cisco.com" type="cite"> <br>
      Hope this helps<br>
      <br>
      Cheer<br>
      G<br>
      <br>
       <br>
      <br>
      <br>
      <br>
      <br>
      <br>
      <br>
      <br>
      <blockquote cite="mid:4FEDEB12.5060105@grotto-networking.com"
        type="cite">
        <div class="moz-cite-prefix"> If changes are needed we will
          incorporate them, as we have done in the past.<br>
          <br>
          Best Regards<br>
          Greg B.<br>
          On 6/28/2012 1:44 AM, Fatai Zhang wrote:<br>
        </div>
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            <p class="MsoNormal"><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
                lang="EN-US">Hi Giovanni,<o:p></o:p></span></p>
            <p class="MsoNormal"><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
                lang="EN-US"><o:p> </o:p></span></p>
            <p class="MsoNormal"><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
                lang="EN-US">&lt;snipped&gt;<o:p></o:p></span></p>
            <p class="MsoNormal"
              style="text-align:justify;text-justify:inter-ideograph"><span
                style="font-family:宋体" lang="EN-US"><br>
                [GM] In current draft the only requirement to assess the
                signal compatibility is  that two interface having the
                same OIC value are compatible. So WSON protocols does
                not need to explicitly list optical parameters and their
                value. We can probably provide some examples in an
                appendix about how you can map them but the OIC concept
                per se does not depend on this. <br>
                <br>
              </span><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
                lang="EN-US"><o:p></o:p></span></p>
            <p class="MsoNormal"
              style="text-align:justify;text-justify:inter-ideograph"><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
                lang="EN-US">[Fatai] How magic the OIC is. I really want
                to see how this magic would happen if there is no need
                to list optical parameters and their value. <o:p></o:p></span></p>
            <p class="MsoNormal"
              style="text-align:justify;text-justify:inter-ideograph"><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
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            <p class="MsoNormal"
              style="text-align:justify;text-justify:inter-ideograph"><span
                style="font-family:宋体" lang="EN-US"><br>
                Cheers<br>
                G<br>
                <br>
              </span><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
                lang="EN-US">Thanks<o:p></o:p></span></p>
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              style="text-align:justify;text-justify:inter-ideograph"><span
style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
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style="font-size:10.5pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D"
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</pre>
        </blockquote>
        <br>
        <br>
        <pre class="moz-signature" cols="72">-- 
===================================================
Dr Greg Bernstein, Grotto Networking (510) 573-2237

</pre>
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CCAMP mailing list
<a class="moz-txt-link-abbreviated" href="mailto:CCAMP@ietf.org">CCAMP@ietf.org</a>
<a class="moz-txt-link-freetext" href="https://www.ietf.org/mailman/listinfo/ccamp">https://www.ietf.org/mailman/listinfo/ccamp</a>
</pre>
    </blockquote>
    <br>
    <br>
    <pre class="moz-signature" cols="72">-- 
===================================================
Dr Greg Bernstein, Grotto Networking (510) 573-2237

</pre>
  </body>
</html>

--------------080704030807070505090505--

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-----Original Message-----
From: ccamp-bounces@ietf.org [mailto:ccamp-bounces@ietf.org] On Behalf Of B=
RUNGARD, DEBORAH A
Sent: Wednesday, June 20, 2012 1:23 PM
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t

*** Security Advisory: This Message Originated Outside of AT&T ***.
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All,

This starts a two-week working group last call on draft-ietf-ccamp-rsvp-te-=
eth-oam-ext-07.txt.

This working group last call ends July 5th. Please send your comments to th=
e CCAMP mailing list.

Deborah and Lou


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All,

This starts a two-week working group last call on draft-ietf-ccamp-rsvp-te-=
sdh-otn-oam-ext-04.

This working group last call ends July 5th. Please send your comments to th=
e CCAMP mailing list.

Deborah and Lou


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Deborah

-----Original Message-----
From: ccamp-bounces@ietf.org [mailto:ccamp-bounces@ietf.org] On Behalf Of B=
RUNGARD, DEBORAH A
Sent: Tuesday, June 19, 2012 2:56 PM
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*** Security Advisory: This Message Originated Outside of AT&T ***.
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All,

This starts a two-week working group last call on draft-ietf-ccamp-oam-conf=
iguration-fwk-07.

This working group last call ends July 3rd. Please send your comments to th=
e CCAMP mailing list.

Deborah and Lou


_______________________________________________
CCAMP mailing list
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https://www.ietf.org/mailman/listinfo/ccamp

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Subject: Re: [CCAMP] Updates on OTN signaling draft
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[Woops, this was stuck in my outbox from last week!]

Fatai/Authors,
	G-PID is a fine place to carry information about the format/type of
information carried by an LSP. An important consideration is that G-PID
information is not used as part of path computation, and is not used by
transit nodes except in the case of the penultimate hop (for PHP).

When we last discussed this, some authors stated that TSG was needed as
part of path computation, including at transit nodes doing loose ERO
expansion.  Hence the discussed inclusion of TSG in LSP Encoding Type.
If the authors are now willing to state that TSG isn't needed for loose
ERO expansion, then G-PID seems the perfect choice.

Do all the authors agree with such this statement (and change)?

As I mentioned on the on the conference call, and my mail of 6/18, the
use of G-PID as part of a path selection is really part of the general
issue seen in MLN. On the call we agreed that non-OTN MLN will be
handled as the standard MLN case, without OTN-specific additions.

Unless I'm misreading your mail, you are *not* proposing to treat the
intra-OTN (hierarchy) case as generic MLN but rather a special case by
bundling some upper OTN hierarchy information as part of a lower H-LSPs
(in Hierarchy TLV).

Correct?

If my reading is correct, then I think the authors need to discuss their
technical reasons for their "preference" and why the previously reached
compromise position (as articulated in my mail of 6/18) is not acceptable.

Speaking only as an individual contributor, given the difficulty in
reaching a consensus on how to treat intra-OTN (hierarchy) as a special
case, I personally now prefer to avoid any technology specific
co-mingling of layers and to address the intra-OTN (hierarchy) case via
generic MLN (or other generic mechanisms).  I think this position would
translate to removing the Hierarchy TLV from the OTN signaling draft and
spinning up a new draft to cover (OTN and generic) intra-technology MLN.

Lou

On 7/5/2012 9:25 PM, Fatai Zhang wrote:
> 
> Hi all,
> 
> We are updating OTN signaling draft. Since we had lots of discussion on
> the TSG stuff in the list, let's converge on the solution.
> 
> Based on the previous discussion between Lou and co-authors, the authors
> prefer the following changes:
> 
> (1) Extending GPID to carry TSG in signaling, since its purpose in
> signaling is to ensure that endpoints of the LSP being signaled have a
> consistent view of the TSG to be offered to its clients and LSP endpoint
> consistency is the purpose for which the GPID was designed.
> 
> (2)Extending LSPA to carry hierarchy information (ie., Type=2 -
> Hierarchy TLV).
> 
> Any comments?
> 
> Thanks
> 
> Fatai

From zhangfatai@huawei.com  Tue Jul 10 02:37:07 2012
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From: Fatai Zhang <zhangfatai@huawei.com>
To: Lou Berger <lberger@labn.net>
Thread-Topic: Updates on OTN signaling draft
Thread-Index: AQHNXhmr2R4bDBEN+kCW4wWQeTDLdZciPg3A
Date: Tue, 10 Jul 2012 09:34:21 +0000
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<p class=3D"MsoPlainText"><span lang=3D"EN-US">Hi Lou,<o:p></o:p></span></p=
>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Please see in-line below.<o:=
p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Note that let</span><span la=
ng=3D"EN-US" style=3D"font-family:&quot;Courier New&quot;">=A1=AF</span><sp=
an lang=3D"EN-US">s use HTML format to make the mails readable,
</span><span lang=3D"EN-US" style=3D"font-family:Wingdings">J</span><span l=
ang=3D"EN-US"><o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Thanks<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Fatai<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">-----</span><span style=3D"f=
ont-family:=CB=CE=CC=E5">=D3=CA=BC=FE=D4=AD=BC=FE</span><span lang=3D"EN-US=
">-----<br>
</span><span style=3D"font-family:=CB=CE=CC=E5">=B7=A2=BC=FE=C8=CB</span><s=
pan lang=3D"EN-US">: Lou Berger [mailto:lberger@labn.net]
<br>
</span><span style=3D"font-family:=CB=CE=CC=E5">=B7=A2=CB=CD=CA=B1=BC=E4</s=
pan><span lang=3D"EN-US">: 2012</span><span style=3D"font-family:=CB=CE=CC=
=E5">=C4=EA</span><span lang=3D"EN-US">7</span><span style=3D"font-family:=
=CB=CE=CC=E5">=D4=C2</span><span lang=3D"EN-US">10</span><span style=3D"fon=
t-family:=CB=CE=CC=E5">=C8=D5</span><span lang=3D"EN-US">
 5:27<br>
</span><span style=3D"font-family:=CB=CE=CC=E5">=CA=D5=BC=FE=C8=CB</span><s=
pan lang=3D"EN-US">: Fatai Zhang<br>
</span><span style=3D"font-family:=CB=CE=CC=E5">=B3=AD=CB=CD</span><span la=
ng=3D"EN-US">: ccamp@ietf.org; Khuzema Pithewan; zhangguoying@mail.ritt.com=
.cn; daniele.ceccarelli@ericsson.com; Linyi; xuyunbin@mail.ritt.com.cn; GRA=
NDI, PIETRO VITTORIO (PIETRO VITTORIO); diego.caviglia@ericsson.com;
 Rajan Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO); John E Drak=
e<br>
</span><span style=3D"font-family:=CB=CE=CC=E5">=D6=F7=CC=E2</span><span la=
ng=3D"EN-US">: Re: Updates on OTN signaling draft<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">[Woops, this was stuck in my=
 outbox from last week!]<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Fatai/Authors,<o:p></o:p></s=
pan></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp; G-PID is a fine place to carry information about the f=
ormat/type of information carried by an LSP. An important consideration is =
that G-PID information is not used as part of path computation, and is not =
used
 by transit nodes except in the case of the penultimate hop (for PHP).<o:p>=
</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">When we last discussed this,=
 some authors stated that TSG was needed as part of path computation, inclu=
ding at transit nodes doing loose ERO expansion.&nbsp; Hence the discussed =
inclusion of TSG in LSP Encoding Type.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">If the authors are now willi=
ng to state that TSG isn't needed for loose ERO expansion, then G-PID seems=
 the perfect choice.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Do all the authors agree wit=
h such this statement (and change)?<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US" style=3D"color:#4F81BD">[Aut=
hors] After lots of discussion, the authors came to conclude that it is nee=
ded only for penultimate hop to select right link to egress and hence the c=
hange.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US" style=3D"color:black"><o:p>&=
nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">As I mentioned on the on the=
 conference call, and my mail of 6/18, the use of G-PID as part of a path s=
election is really part of the general issue seen in MLN. On the call we ag=
reed that non-OTN MLN will be handled
 as the standard MLN case, without OTN-specific additions.<o:p></o:p></span=
></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Unless I'm misreading your m=
ail, you are *not* proposing to treat the intra-OTN (hierarchy) case as gen=
eric MLN but rather a special case by bundling some upper OTN hierarchy inf=
ormation as part of a lower H-LSPs (in
 Hierarchy TLV).<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Correct?<o:p></o:p></span></=
p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US" style=3D"color:#4F81BD">[Aut=
hors] Correct, it is the latter one.
<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US" style=3D"color:black"><o:p>&=
nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">If my reading is correct, th=
en I think the authors need to discuss their technical reasons for their &q=
uot;preference&quot; and why the previously reached compromise position (as=
 articulated in my mail of 6/18) is not acceptable.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US" style=3D"color:black"><o:p>&=
nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US" style=3D"color:#4F81BD">[Aut=
hors] After checking after conf call, the authors think that Encoding type =
is an end to end constraint (See RFC4328) and GPID should be the right plac=
e as you mention above.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US" style=3D"color:black"><o:p>&=
nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Speaking only as an individu=
al contributor, given the difficulty in reaching a consensus on how to trea=
t intra-OTN (hierarchy) as a special case, I personally now prefer to avoid=
 any technology specific co-mingling
 of layers and to address the intra-OTN (hierarchy) case via generic MLN (o=
r other generic mechanisms).&nbsp; I think this position would translate to=
 removing the Hierarchy TLV from the OTN signaling draft and spinning up a =
new draft to cover (OTN and generic)
 intra-technology MLN.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US" style=3D"color:#4F81BD">[Aut=
hors] The authors would like to focus on OTN specific by removing Encoding =
type and Switching type in the Hierarchy TLV(but keeping Signal Type). It i=
s OK to have a new draft to cover generic
 intra-technology MLN.</span><span lang=3D"EN-US"><o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US" style=3D"color:black"><o:p>&=
nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Lou<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">On 7/5/2012 9:25 PM, Fatai Z=
hang wrote:<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; Hi all,<o:p></o:p></spa=
n></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; We are updating OTN sig=
naling draft. Since we had lots of discussion on the TSG stuff in the list,=
 let's converge on the solution.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; Based on the previous d=
iscussion between Lou and co-authors, the authors prefer the following chan=
ges:<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; (1) Extending GPID to c=
arry TSG in signaling, since its purpose in signaling is to ensure that end=
points of the LSP being signaled have a consistent view of the TSG to be of=
fered to its clients and LSP endpoint consistency
 is the purpose for which the GPID was designed.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; (2)Extending LSPA to ca=
rry hierarchy information (ie., Type=3D2 Hierarchy TLV).<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; Any comments?<o:p></o:p=
></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; Thanks<o:p></o:p></span=
></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; Fatai<o:p></o:p></span>=
</p>
</div>
</body>
</html>

--_000_F82A4B6D50F9464B8EBA55651F541CF82CC559EFSZXEML520MBXchi_--

From julien.meuric@orange.com  Tue Jul 10 03:26:02 2012
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Date: Tue, 10 Jul 2012 12:26:26 +0200
From: Julien Meuric <julien.meuric@orange.com>
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To: Greg Bernstein <gregb@grotto-networking.com>
References: <7AEB3D6833318045B4AE71C2C87E8E1720CB5A47@dfweml511-mbx.china.huawei.com> <4FE2358E.5050809@cisco.com> <F82A4B6D50F9464B8EBA55651F541CF82CC3486D@SZXEML520-MBX.china.huawei.com> <4FE89453.8090103@cisco.com> <F82A4B6D50F9464B8EBA55651F541CF82CC3B2FF@SZXEML520-MBX.china.huawei.com> <4FEDEB12.5060105@grotto-networking.com> <4FF58352.8030102@cisco.com> <4FFAFA4B.5040707@grotto-networking.com>
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Subject: Re: [CCAMP] =?utf-8?b?562U5aSNOiDnrZTlpI06ICBGVzogIE9wdGljYWwgaW50?= =?utf-8?q?_class=2C_changes_to_draft-ietf-ccamp-rwa-info-14?=
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Hi all.

Sorry for interrupting.


On 09/07/2012 17:35, Greg Bernstein wrote:
> ---> But this doesn't help  interoperability. Note that we provided a
 > general mechanism for modulation types and FEC.

Actually, the class approach does simplify the interoperability: instead 
of comparing a set of parameters (including some cross-compatibility 
complexity and the risk of missing some information), an implementation 
only has to match two 32-bit fields. Provided the operator can specify 
the class(es) associated to a given transponder, it just mimics the 
interconnection of 2 identical transmitters as done in real networks.

However, the drawbacks of the class approach do exist:
- from an implementation perspective, the capability to fallback to an 
alternative set of parameters, e.g. a more commonly implemented FEC;
- from the operator's perspective, the visibility on the parameters used 
within protocol analyzing tools, or the capability to be aware of the 
parameter which does not match so as to provision a compatible one.

I believe that behind the technical content of his pragmatic proposal, 
Giovanni is raising an interesting question. We are spending much effort 
on specifying an ideal detailed solution, but will operational people 
(as opposed to protocol engineers) really be bothered by those 
drawbacks? What if the actual maturity and experience (I'm not 
suggesting anything about Giovanni's age!) was to say "over-engineering 
is just bringing material to people you are still questioning the need 
of RSVP-TE signaling in optical networks"? Yes, SRLGs are opaque 
identifiers, but they have already proven to work.
Sometimes, "perfection is attained, not when there is nothing left to 
add, but when there is nothing left to take away..."

Regards,

Julien



From lberger@labn.net  Tue Jul 10 07:33:01 2012
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Subject: Re: [CCAMP] =?gb2312?b?tPC4tDogVXBkYXRlcyBvbiBPVE4gc2lnbmFsaW5nIGRy?= =?gb2312?b?YWZ0?=
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Fatai,

See below for in-line responses.

On 7/10/2012 5:34 AM, Fatai Zhang wrote:
> 
> 
> Hi Lou,
> 
>  
> 
> Please see in-line below.
> 
>  
> 
> Note that lets use HTML format to make the mails readable, J
> 
>  
> 
>  
> 
> Thanks
> 
>  
> 
> Fatai
> 
>  
> 
>  
> 
> -----ʼԭ-----
> : Lou Berger [mailto:lberger@labn.net]
> ʱ: 2012710 5:27
> ռ: Fatai Zhang
> : ccamp@ietf.org; Khuzema Pithewan; zhangguoying@mail.ritt.com.cn;
> daniele.ceccarelli@ericsson.com; Linyi; xuyunbin@mail.ritt.com.cn;
> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO); diego.caviglia@ericsson.com;
> Rajan Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO); John E Drake
> : Re: Updates on OTN signaling draft
> 
>  
> 
> [Woops, this was stuck in my outbox from last week!]
> 
>  
> 
> Fatai/Authors,
> 
>          G-PID is a fine place to carry information about the
> format/type of information carried by an LSP. An important consideration
> is that G-PID information is not used as part of path computation, and
> is not used by transit nodes except in the case of the penultimate hop
> (for PHP).
>  
> When we last discussed this, some authors stated that TSG was needed as
> part of path computation, including at transit nodes doing loose ERO
> expansion.  Hence the discussed inclusion of TSG in LSP Encoding Type.
> 
> If the authors are now willing to state that TSG isn't needed for loose
> ERO expansion, then G-PID seems the perfect choice.
> 
> Do all the authors agree with such this statement (and change)?
> 
> [Authors] After lots of discussion, the authors came to conclude that it
> is needed only for penultimate hop to select right link to egress and
> hence the change.

Can one of the authors summarize the discussion for the WG?

The authors are asking for WG support, so should provide the technical
basis for the position. Once the requirements are articulated, the WG
can be in a position to judge/agree/disagree with the proposed solution.

> 
> As I mentioned on the on the conference call, and my mail of 6/18, the
> use of G-PID as part of a path selection is really part of the general
> issue seen in MLN. On the call we agreed that non-OTN MLN will be
> handled as the standard MLN case, without OTN-specific additions.
> 
> Unless I'm misreading your mail, you are *not* proposing to treat the
> intra-OTN (hierarchy) case as generic MLN but rather a special case by
> bundling some upper OTN hierarchy information as part of a lower H-LSPs
> (in Hierarchy TLV).
> 
> Correct?
> 
> [Authors] Correct, it is the latter one.
> 
> If my reading is correct, then I think the authors need to discuss their
> technical reasons for their "preference" and why the previously reached
> compromise position (as articulated in my mail of 6/18) is not acceptable.
> 
> [Authors] After checking after conf call, the authors think that
> Encoding type is an end to end constraint (See RFC4328) and GPID should
> be the right place as you mention above.

This goes to requirements, in today's GMPLS G-PID is not part of path
computation except in the context of MRN/MLN.

> 
> Speaking only as an individual contributor, given the difficulty in
> reaching a consensus on how to treat intra-OTN (hierarchy) as a special
> case, I personally now prefer to avoid any technology specific
> co-mingling of layers and to address the intra-OTN (hierarchy) case via
> generic MLN (or other generic mechanisms).  I think this position would
> translate to removing the Hierarchy TLV from the OTN signaling draft and
> spinning up a new draft to cover (OTN and generic) intra-technology MLN.
> 
> [Authors] The authors would like to focus on OTN specific by removing
> Encoding type and Switching type in the Hierarchy TLV(but keeping Signal
> Type). It is OK to have a new draft to cover generic intra-technology MLN.

How is the revised TLV to be used?  Do the authors have a specific
proposal that covers "generic intra-technology MLN"?

Lou

> 
>  
> Lou
> 
>  
> 
> On 7/5/2012 9:25 PM, Fatai Zhang wrote:
> 
>>
> 
>> Hi all,
> 
>>
> 
>> We are updating OTN signaling draft. Since we had lots of discussion on
> the TSG stuff in the list, let's converge on the solution.
> 
>>
> 
>> Based on the previous discussion between Lou and co-authors, the
> authors prefer the following changes:
> 
>>
> 
>> (1) Extending GPID to carry TSG in signaling, since its purpose in
> signaling is to ensure that endpoints of the LSP being signaled have a
> consistent view of the TSG to be offered to its clients and LSP endpoint
> consistency is the purpose for which the GPID was designed.
> 
>>
> 
>> (2)Extending LSPA to carry hierarchy information (ie., Type=2 Hierarchy
> TLV).
> 
>>
> 
>> Any comments?
> 
>>
> 
>> Thanks
> 
>>
> 
>> Fatai
> 

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From: "BRUNGARD, DEBORAH A" <db3546@att.com>
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Thread-Topic: WG Last Call draft-ietf-ccamp-rsvp-te-mpls-tp-oam-ext-08
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Working Group(s),

This is to start a Working Group Last Call on draft-ietf-ccamp-rsvp-te-mpls=
-tp-oam-ext-08.

Please send your comments to the CCAMP WG mailing list.

This working group last call ends July 24th.

Deborah (and Lou)



From zhangfatai@huawei.com  Tue Jul 10 23:26:53 2012
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From: Fatai Zhang <zhangfatai@huawei.com>
To: Lou Berger <lberger@labn.net>
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Subject: Re: [CCAMP] =?gb2312?b?tPC4tDogtPC4tDogVXBkYXRlcyBvbiBPVE4gc2lnbmFs?= =?gb2312?b?aW5nIGRyYWZ0?=
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Fatai,
	It sounds you/the Authors are proposing/moving towards G-PID + MRN/MLN
to support intra-OTN H-LSPs.  From a WG perspective, this is great as it
leverages/extends existing technology-independent GMPLS mechanisms.

I think you may have missed a process point in my previous mail.

As I'm sure you know, author's consensus does not mean there is WG
consensus.  You say that there has been much (off-line) discussion among
the authors. While off-line discussions are always a fine way to make
progress among individuals, the results of private discussions do not
represent WG consensus.

So from my previous mail:
> Can one of the authors summarize the [off-line author's]
> discussion for the WG?

...

>> [Authors] The authors would like to focus on OTN specific by
>> removing Encoding type and Switching type in the Hierarchy TLV
>> (but keeping Signal Type). It is OK to have a new draft to cover
>> generic intra-technology MLN.
>
> How is the revised TLV to be used?  Do the authors have a specific
> proposal that covers "generic intra-technology MLN"?

Lou

BTW The use of G-PID was first discussed in
draft-ietf-ccamp-otn-g709-info-model-01 and Signal Type in John's mail
on 7/27/2011.

On 7/11/2012 2:24 AM, Fatai Zhang wrote:
> Hi Lou,
> 
> Let me repeat the requirement of this information. 
> When an ODU (e.g., ODU1) with one specific TSG (because of the ingress interface constraint) needs to be created over another higher ODU (e.g., ODU3 FA-LSP), the penultimate hop of this ODU3 FA-LSP needs to be aware of which TSG should be picked up from the TE link (ie., choose the right component link which can support the client TSG), so the client TSG information (and hierarchy information) needs to be conveyed in the signaling to create the ODU FA-LSP. 
> 
> The requirement has been discussed in the previous IETF meetings, please get more information from the presentation slides of Taipei and Paris meetings.
> 
> Given that people understand the above requirment, let's focus on the potential solutions. In Taipei meeting, the authors compared three alternatives and discussed in the list:
> (1) Introducing a new object: WG prefer to re-use the existing things, so the authors switched to (2).
> (2) Extending GPID to carry TSG/PT information: Lou once suggested this approach and the authors finally agreed on this because it is needed only for penultimate hop to select right link to egress. Note that TSG isn't needed for loose ERO expansion.
> (3) Extending Encoding Type: Encoding type is an end to end constraint (See RFC4328), so the authors think it is not the right place.
> 
> Do we need to poll how many people support which approach perspectively (or any other approach)?
> 
> 
> 
> Thanks
> 
> Fatai
> 
> 
> -----ʼԭ-----
> : Lou Berger [mailto:lberger@labn.net] 
> ʱ: 2012710 22:33
> ռ: Fatai Zhang
> : ccamp@ietf.org; Khuzema Pithewan; zhangguoying@mail.ritt.com.cn; daniele.ceccarelli@ericsson.com; Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO VITTORIO); diego.caviglia@ericsson.com; Rajan Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO); John E Drake
> : Re: : Updates on OTN signaling draft
> 
> Fatai,
> 
> See below for in-line responses.
> 
> On 7/10/2012 5:34 AM, Fatai Zhang wrote:
>>
>>
>> Hi Lou,
>>
>>  
>>
>> Please see in-line below.
>>>  
>>
>> Note that lets use HTML format to make the mails readable, J
>>
>>    
>>
>> Thanks
>>
>>  
>>
>> Fatai
>>
>>  
>>
>>  
>>
>> -----ʼԭ-----
>> : Lou Berger [mailto:lberger@labn.net]
>> ʱ: 2012710 5:27
>> ռ: Fatai Zhang
>> : ccamp@ietf.org; Khuzema Pithewan; zhangguoying@mail.ritt.com.cn;
>> daniele.ceccarelli@ericsson.com; Linyi; xuyunbin@mail.ritt.com.cn;
>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO); diego.caviglia@ericsson.com;
>> Rajan Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO); John E Drake
>> : Re: Updates on OTN signaling draft
>>
>>  
>>
>> [Woops, this was stuck in my outbox from last week!]
>>
>>  
>>
>> Fatai/Authors,
>>
>>          G-PID is a fine place to carry information about the format/type of information carried by an LSP. An important consideration is that G-PID information is not used as part of path computation, and is not used by transit nodes except in the case of the penultimate hop (for PHP).
>>  
>> When we last discussed this, some authors stated that TSG was needed as part of path computation, including at transit nodes doing loose ERO expansion.  Hence the discussed inclusion of TSG in LSP Encoding Type.
>>
>> If the authors are now willing to state that TSG isn't needed for loose ERO expansion, then G-PID seems the perfect choice.
>>
>> Do all the authors agree with such this statement (and change)?
>  
>> [Authors] After lots of discussion, the authors came to conclude that it is needed only for penultimate hop to select right link to egress and hence the change.
> 
> Can one of the authors summarize the discussion for the WG?
> 
> The authors are asking for WG support, so should provide the technical basis for the position. Once the requirements are articulated, the WG can be in a position to judge/agree/disagree with the proposed solution.
> 
>>
>> As I mentioned on the on the conference call, and my mail of 6/18, the use of G-PID as part of a path selection is really part of the general issue seen in MLN. On the call we agreed that non-OTN MLN will be handled as the standard MLN case, without OTN-specific additions.
>>
>> Unless I'm misreading your mail, you are *not* proposing to treat the intra-OTN (hierarchy) case as generic MLN but rather a special case by bundling some upper OTN hierarchy information as part of a lower H-LSPs (in Hierarchy TLV).
>>
>> Correct?
>>
>> [Authors] Correct, it is the latter one.
>>
>> If my reading is correct, then I think the authors need to discuss their technical reasons for their "preference" and why the previously reached compromise position (as articulated in my mail of 6/18) is not acceptable.
>>
>> [Authors] After checking after conf call, the authors think that Encoding type is an end to end constraint (See RFC4328) and GPID should be the right place as you mention above.
> 
> This goes to requirements, in today's GMPLS G-PID is not part of path computation except in the context of MRN/MLN.
> 
>>
>> Speaking only as an individual contributor, given the difficulty in reaching a consensus on how to treat intra-OTN (hierarchy) as a special case, I personally now prefer to avoid any technology specific co-mingling of layers and to address the intra-OTN (hierarchy) case via generic MLN (or other generic mechanisms).  I think this position would translate to removing the Hierarchy TLV from the OTN signaling draft and spinning up a new draft to cover (OTN and generic) intra-technology MLN.
>>
>> [Authors] The authors would like to focus on OTN specific by removing Encoding type and Switching type in the Hierarchy TLV(but keeping Signal Type). It is OK to have a new draft to cover generic intra-technology MLN.
> 
> How is the revised TLV to be used?  Do the authors have a specific proposal that covers "generic intra-technology MLN"?
> 
> Lou
> 
>>
>>  
>> Lou
>>
>>  
>>
>> On 7/5/2012 9:25 PM, Fatai Zhang wrote:
>>
>>>
>>
>>> Hi all,
>>
>>>
>>
>>> We are updating OTN signaling draft. Since we had lots of discussion on
>> the TSG stuff in the list, let's converge on the solution.
>>
>>>
>>
>>> Based on the previous discussion between Lou and co-authors, the
>> authors prefer the following changes:
>>
>>>
>>
>>> (1) Extending GPID to carry TSG in signaling, since its purpose in
>> signaling is to ensure that endpoints of the LSP being signaled have a
>> consistent view of the TSG to be offered to its clients and LSP endpoint
>> consistency is the purpose for which the GPID was designed.
>>
>>>
>>
>>> (2)Extending LSPA to carry hierarchy information (ie., Type=2 Hierarchy
>> TLV).
>>
>>>
>>
>>> Any comments?
>>
>>>
>>
>>> Thanks
>>
>>>
>>
>>> Fatai
>>

From jdrake@juniper.net  Wed Jul 11 11:56:07 2012
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From: John E Drake <jdrake@juniper.net>
To: Fatai Zhang <zhangfatai@huawei.com>, Lou Berger <lberger@labn.net>
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<div class=3D"WordSection1">
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Hi John,<o:p></o:p></span></=
p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">I think TSG and hierarchy in=
formation really confused many people, which causes the same questions will=
 come out again after we explained many times, :-)
<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">The simple way is to remove =
link bundling (or bundle the homogeneous component links) in the routing, t=
hen all the issues disappear immediately ( i.e., no need TSG and hierarchy =
information at all), otherwise, it needs
 these two kinds of information in some cases.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">I really suspect the value o=
f bundling in the GMPLS for TDM or WSON. I think this is interesting point =
to be investigated, but it seems that not too many people are interested,
</span><span lang=3D"EN-US" style=3D"font-family:Wingdings">J</span><span l=
ang=3D"EN-US"><o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Please see in-line below.<o:=
p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Thanks<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Fatai<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">-----</span><span style=3D"f=
ont-family:=CB=CE=CC=E5">=D3=CA=BC=FE=D4=AD=BC=FE</span><span lang=3D"EN-US=
">-----<br>
</span><span style=3D"font-family:=CB=CE=CC=E5">=B7=A2=BC=FE=C8=CB</span><s=
pan lang=3D"EN-US">: John E Drake [mailto:jdrake@juniper.net]
<br>
</span><span style=3D"font-family:=CB=CE=CC=E5">=B7=A2=CB=CD=CA=B1=BC=E4</s=
pan><span lang=3D"EN-US">: 2012</span><span style=3D"font-family:=CB=CE=CC=
=E5">=C4=EA</span><span lang=3D"EN-US">7</span><span style=3D"font-family:=
=CB=CE=CC=E5">=D4=C2</span><span lang=3D"EN-US">12</span><span style=3D"fon=
t-family:=CB=CE=CC=E5">=C8=D5</span><span lang=3D"EN-US">
 2:54<br>
</span><span style=3D"font-family:=CB=CE=CC=E5">=CA=D5=BC=FE=C8=CB</span><s=
pan lang=3D"EN-US">: Fatai Zhang; Lou Berger<br>
</span><span style=3D"font-family:=CB=CE=CC=E5">=B3=AD=CB=CD</span><span la=
ng=3D"EN-US">: ccamp@ietf.org; Khuzema Pithewan; zhangguoying@mail.ritt.com=
.cn; daniele.ceccarelli@ericsson.com; Linyi; xuyunbin@mail.ritt.com.cn; GRA=
NDI, PIETRO VITTORIO (PIETRO VITTORIO); diego.caviglia@ericsson.com;
 Rajan Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO)<br>
</span><span style=3D"font-family:=CB=CE=CC=E5">=D6=F7=CC=E2</span><span la=
ng=3D"EN-US">: RE: </span><span style=3D"font-family:=CB=CE=CC=E5">=B4=F0=
=B8=B4</span><span lang=3D"EN-US">: Updates on OTN signaling draft<o:p></o:=
p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Fatai,<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Is it not the case that *any=
* node, regardless of whether it is the ingress node, an intermediate node,=
 or the penultimate node, that selects the interface for the egress LSP end=
point MUST ensure that that interface
 has a TSG that is compatible with the TSG of interface for the ingress LSP=
 endpoint?<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US" style=3D"color:black"><o:p>&=
nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US" style=3D"color:#548DD4">[Fat=
ai] There are two cases for TSG issue. One is for ODU service LSP (carrying=
 non-ODU) creation, the second one is ODU FA-LSP creation for carrying anot=
her lower ODU. For the first case, the
 TSG can be changeable segment by segment (link by link). For example, when=
 an ODU1 (to carry non-ODU) is being created over ODU3 link, the TSG could =
be different link by link. For the second case, this is what we are talking=
 about with Lou; in this case, only
 end points and penultimate node need to have the compatible TSG. <o:p></o:=
p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US" style=3D"color:black"><o:p>&=
nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Also, it occurs to me that h=
ierarchy is not only unnecessary but counter-productive in signaling.&nbsp;=
 When one establishes an ODU3, for example, that ODU3 may be used to instan=
tiate multiple hierarchies, so one does not
 want to specify a particular hierarchy.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">If one is establishing this =
ODU3 in order to eventually establish an ODU0 LSP over an ODU2 LSP, then af=
ter the ODU3 is established, the ODU2 would be signaled within the ODU3.&nb=
sp; Again, since the ODU2 might support multiple
 hierarchies, one does not want to specify a particular hierarchy.<o:p></o:=
p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Once the OUD2 is established=
, the ODU0 is signaled.&nbsp; Since it does not support any further hierarc=
hy, none is specified.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US" style=3D"color:#548DD4">[Fat=
ai] Hierarchy information is necessary when bundling link is used. For your=
 example, ODU0-&gt;ODU2-&gt;ODU3, when creating ODU2 FA-LSP over ODU3 links=
, ODU2 layer should be aware of that it should
 pick up the right component link that can support ODU0 muxing (so the hier=
archy ODU0-&gt;ODU2 should be carried when creating ODU2 FA-LSP), otherwise=
, this arbitrary ODU2 could be only support ODU1-&gt;ODU2, then ODU0 cannot=
 be carried over this ODU2 FA-LSP.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US" style=3D"color:black"><o:p>&=
nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Thanks,<o:p></o:p></span></p=
>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">John <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Sent from my iPhone<o:p></o:=
p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; -----Original Message--=
---<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; From: Fatai Zhang [mail=
to:zhangfatai@huawei.com]<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; Sent: Tuesday, July 10,=
 2012 11:25 PM<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; To: Lou Berger<o:p></o:=
p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; Cc: ccamp@ietf.org; Khu=
zema Pithewan; zhangguoying@mail.ritt.com.cn;<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; daniele.ceccarelli@eric=
sson.com; Linyi; xuyunbin@mail.ritt.com.cn;<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; GRANDI, PIETRO VITTORIO=
 (PIETRO VITTORIO); diego.caviglia@ericsson.com;<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; Rajan Rao; IBryskin@adv=
aoptical.com; BELOTTI, SERGIO (SERGIO); John E<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; Drake<o:p></o:p></span>=
</p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; Subject: </span><span s=
tyle=3D"font-family:=CB=CE=CC=E5">=B4=F0=B8=B4</span><span lang=3D"EN-US">:
</span><span style=3D"font-family:=CB=CE=CC=E5">=B4=F0=B8=B4</span><span la=
ng=3D"EN-US">: Updates on OTN signaling draft<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; Hi Lou,<o:p></o:p></spa=
n></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; Let me repeat the requi=
rement of this information.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; When an ODU (e.g., ODU1=
) with one specific TSG (because of the ingress<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; interface constraint) n=
eeds to be created over another higher ODU<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; (e.g., ODU3 FA-LSP), th=
e penultimate hop of this ODU3 FA-LSP needs to<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; be aware of which TSG s=
hould be picked up from the TE link (ie., choose<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; the right component lin=
k which can support the client TSG), so the<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; client TSG information =
(and hierarchy information) needs to be conveyed<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; in the signaling to cre=
ate the ODU FA-LSP.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; The requirement has bee=
n discussed in the previous IETF meetings,<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; please get more informa=
tion from the presentation slides of Taipei and<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; Paris meetings.<o:p></o=
:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; Given that people under=
stand the above requirment, let's focus on the<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; potential solutions. In=
 Taipei meeting, the authors compared three<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; alternatives and discus=
sed in the list:<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; (1) Introducing a new o=
bject: WG prefer to re-use the existing things,<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; so the authors switched=
 to (2).<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; (2) Extending GPID to c=
arry TSG/PT information: Lou once suggested this<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; approach and the author=
s finally agreed on this because it is needed<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; only for penultimate ho=
p to select right link to egress. Note that TSG<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; isn't needed for loose =
ERO expansion.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; (3) Extending Encoding =
Type: Encoding type is an end to end constraint<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; (See RFC4328), so the a=
uthors think it is not the right place.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; Do we need to poll how =
many people support which approach perspectively<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; (or any other approach)=
?<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; Thanks<o:p></o:p></span=
></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; Fatai<o:p></o:p></span>=
</p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; -----</span><span style=
=3D"font-family:=CB=CE=CC=E5">=D3=CA=BC=FE=D4=AD=BC=FE</span><span lang=3D"=
EN-US">-----<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; </span><span style=3D"f=
ont-family:=CB=CE=CC=E5">=B7=A2=BC=FE=C8=CB</span><span lang=3D"EN-US">: Lo=
u Berger [mailto:lberger@labn.net]<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; </span><span style=3D"f=
ont-family:=CB=CE=CC=E5">=B7=A2=CB=CD=CA=B1=BC=E4</span><span lang=3D"EN-US=
">: 2012</span><span style=3D"font-family:=CB=CE=CC=E5">=C4=EA</span><span =
lang=3D"EN-US">7</span><span style=3D"font-family:=CB=CE=CC=E5">=D4=C2</spa=
n><span lang=3D"EN-US">10</span><span style=3D"font-family:=CB=CE=CC=E5">=
=C8=D5</span><span lang=3D"EN-US">
 22:33<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; </span><span style=3D"f=
ont-family:=CB=CE=CC=E5">=CA=D5=BC=FE=C8=CB</span><span lang=3D"EN-US">: Fa=
tai Zhang<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; </span><span style=3D"f=
ont-family:=CB=CE=CC=E5">=B3=AD=CB=CD</span><span lang=3D"EN-US">: ccamp@ie=
tf.org; Khuzema Pithewan; zhangguoying@mail.ritt.com.cn;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; daniele.ceccarelli@eric=
sson.com; Linyi; xuyunbin@mail.ritt.com.cn;<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; GRANDI, PIETRO VITTORIO=
 (PIETRO VITTORIO); diego.caviglia@ericsson.com;<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; Rajan Rao; IBryskin@adv=
aoptical.com; BELOTTI, SERGIO (SERGIO); John E<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; Drake<o:p></o:p></span>=
</p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; </span><span style=3D"f=
ont-family:=CB=CE=CC=E5">=D6=F7=CC=E2</span><span lang=3D"EN-US">: Re:
</span><span style=3D"font-family:=CB=CE=CC=E5">=B4=F0=B8=B4</span><span la=
ng=3D"EN-US">: Updates on OTN signaling draft<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; Fatai,<o:p></o:p></span=
></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; See below for in-line r=
esponses.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; On 7/10/2012 5:34 AM, F=
atai Zhang wrote:<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; Hi Lou,<o:p></o:p>=
</span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; Please see in-line=
 below.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; &gt;<o:p></o:p></s=
pan></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; Note that let</spa=
n><span lang=3D"EN-US" style=3D"font-family:&quot;Courier New&quot;">=A1=AF=
</span><span lang=3D"EN-US">s use HTML format to make the mails readable, J=
<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; Thanks<o:p></o:p><=
/span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; Fatai<o:p></o:p></=
span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; -----</span><span =
style=3D"font-family:=CB=CE=CC=E5">=D3=CA=BC=FE=D4=AD=BC=FE</span><span lan=
g=3D"EN-US">-----<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; </span><span style=
=3D"font-family:=CB=CE=CC=E5">=B7=A2=BC=FE=C8=CB</span><span lang=3D"EN-US"=
>: Lou Berger [mailto:lberger@labn.net]<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; </span><span style=
=3D"font-family:=CB=CE=CC=E5">=B7=A2=CB=CD=CA=B1=BC=E4</span><span lang=3D"=
EN-US">: 2012</span><span style=3D"font-family:=CB=CE=CC=E5">=C4=EA</span><=
span lang=3D"EN-US">7</span><span style=3D"font-family:=CB=CE=CC=E5">=D4=C2=
</span><span lang=3D"EN-US">10</span><span style=3D"font-family:=CB=CE=CC=
=E5">=C8=D5</span><span lang=3D"EN-US">
 5:27<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; </span><span style=
=3D"font-family:=CB=CE=CC=E5">=CA=D5=BC=FE=C8=CB</span><span lang=3D"EN-US"=
>: Fatai Zhang<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; </span><span style=
=3D"font-family:=CB=CE=CC=E5">=B3=AD=CB=CD</span><span lang=3D"EN-US">: cca=
mp@ietf.org; Khuzema Pithewan;<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; zhangguoying@mail.ritt.=
com.cn;<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; daniele.ceccarelli=
@ericsson.com; Linyi; xuyunbin@mail.ritt.com.cn;<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; GRANDI, PIETRO VIT=
TORIO (PIETRO VITTORIO);<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; diego.caviglia@eri=
csson.com; Rajan Rao; IBryskin@advaoptical.com;<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; BELOTTI, SERGIO (S=
ERGIO); John E Drake<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; </span><span style=
=3D"font-family:=CB=CE=CC=E5">=D6=F7=CC=E2</span><span lang=3D"EN-US">: Re:=
 Updates on OTN signaling draft<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; [Woops, this was s=
tuck in my outbox from last week!]<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; Fatai/Authors,<o:p=
></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;&nbsp;&nbsp;&nbsp;&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; G-PID is a fine place to carry informat=
ion about the<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; format/type of informat=
ion carried by an LSP. An important<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; consideration is that G=
-PID information is not used as part of path<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; computation, and is not=
 used by transit nodes except in the case of the<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; penultimate hop (for PH=
P).<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; When we last discu=
ssed this, some authors stated that TSG was needed<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; as part of path computa=
tion, including at transit nodes doing loose ERO<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; expansion.&nbsp; Hence =
the discussed inclusion of TSG in LSP Encoding Type.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; If the authors are=
 now willing to state that TSG isn't needed for<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; loose ERO expansion, th=
en G-PID seems the perfect choice.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; Do all the authors=
 agree with such this statement (and change)?<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; [Authors] After lo=
ts of discussion, the authors came to conclude that<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; it is needed only for p=
enultimate hop to select right link to egress<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; and hence the change.<o=
:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; Can one of the authors =
summarize the discussion for the WG?<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; The authors are asking =
for WG support, so should provide the technical<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; basis for the position.=
 Once the requirements are articulated, the WG<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; can be in a position to=
 judge/agree/disagree with the proposed<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; solution.<o:p></o:p></s=
pan></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; As I mentioned on =
the on the conference call, and my mail of 6/18,<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; the use of G-PID as par=
t of a path selection is really part of the<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; general issue seen in M=
LN. On the call we agreed that non-OTN MLN will<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; be handled as the stand=
ard MLN case, without OTN-specific additions.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; Unless I'm misread=
ing your mail, you are *not* proposing to treat the<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; intra-OTN (hierarchy) c=
ase as generic MLN but rather a special case by<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; bundling some upper OTN=
 hierarchy information as part of a lower H-LSPs<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; (in Hierarchy TLV).<o:p=
></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; Correct?<o:p></o:p=
></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; [Authors] Correct,=
 it is the latter one.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; If my reading is c=
orrect, then I think the authors need to discuss<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; their technical reasons=
 for their &quot;preference&quot; and why the previously<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; reached compromise posi=
tion (as articulated in my mail of 6/18) is not<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; acceptable.<o:p></o:p><=
/span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; [Authors] After ch=
ecking after conf call, the authors think that<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; Encoding type is an end=
 to end constraint (See RFC4328) and GPID should<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; be the right place as y=
ou mention above.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; This goes to requiremen=
ts, in today's GMPLS G-PID is not part of path<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; computation except in t=
he context of MRN/MLN.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; Speaking only as a=
n individual contributor, given the difficulty in<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; reaching a consensus on=
 how to treat intra-OTN (hierarchy) as a special<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; case, I personally now =
prefer to avoid any technology specific co-<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; mingling of layers and =
to address the intra-OTN (hierarchy) case via<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; generic MLN (or other g=
eneric mechanisms).&nbsp; I think this position would<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; translate to removing t=
he Hierarchy TLV from the OTN signaling draft<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; and spinning up a new d=
raft to cover (OTN and generic) intra-technology<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; MLN.<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; [Authors] The auth=
ors would like to focus on OTN specific by removing<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; Encoding type and Switc=
hing type in the Hierarchy TLV(but keeping<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; Signal Type). It is OK =
to have a new draft to cover generic intra-<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; technology MLN.<o:p></o=
:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; How is the revised TLV =
to be used?&nbsp; Do the authors have a specific<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; proposal that covers &q=
uot;generic intra-technology MLN&quot;?<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; Lou<o:p></o:p></span></=
p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; Lou<o:p></o:p></sp=
an></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; On 7/5/2012 9:25 P=
M, Fatai Zhang wrote:<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;&gt;<o:p></o:p></sp=
an></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;&gt; Hi all,<o:p></=
o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;&gt;<o:p></o:p></sp=
an></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;&gt; We are updatin=
g OTN signaling draft. Since we had lots of discussion<o:p></o:p></span></p=
>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;&gt; on<o:p></o:p><=
/span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; the TSG stuff in t=
he list, let's converge on the solution.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;&gt;<o:p></o:p></sp=
an></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;&gt; Based on the p=
revious discussion between Lou and co-authors, the<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; authors prefer the=
 following changes:<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;&gt;<o:p></o:p></sp=
an></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;&gt; (1) Extending =
GPID to carry TSG in signaling, since its purpose in<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; signaling is to en=
sure that endpoints of the LSP being signaled have<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; a<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; consistent view of=
 the TSG to be offered to its clients and LSP<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; endpoint consisten=
cy is the purpose for which the GPID was designed.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;&gt;<o:p></o:p></sp=
an></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;&gt; (2)Extending L=
SPA to carry hierarchy information (ie., Type=3D2<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;&gt; Hierarchy<o:p>=
</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt; TLV).<o:p></o:p></=
span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;&gt;<o:p></o:p></sp=
an></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;&gt; Any comments?<=
o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;&gt;<o:p></o:p></sp=
an></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;&gt; Thanks<o:p></o=
:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;&gt;<o:p></o:p></sp=
an></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;&gt; Fatai<o:p></o:=
p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; &gt;<o:p></o:p></span><=
/p>
</div>
</body>
</html>

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To: Lou Berger <lberger@labn.net>
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From: Durga Prasad Thorati <DurgaPrasad.Thorati@ecitele.com>
To: "daniele.ceccarelli@ericsson.com" <daniele.ceccarelli@ericsson.com>
Thread-Topic: draft-ceccarelli-ccamp-gmpls-g709-lmp-test-03  expired
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--_000_C633C16984232B4AAF0A069D6CD9C32B16E3A47FFRIDWPPMB001eci_
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Hi Daniele,

Below mentioned draft seems to be expired. Whether the contents merged with=
 any other document? Can you please let us know the details if in case?

----
Link Management Protocol (LMP) Test Messages Extensions for Evaluative Optic=
al Transport Networks (OTN)
draft-ceccarelli-ccamp-gmpls-g709-lmp-test-03
----

Thanks,
Durga.



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rier New&quot;"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;">Hi Daniele,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;">Below mentioned draft seems to be expired. Whether the conte=
nts merged with any other document? Can you please let us know the details i=
f in case?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;">----<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;">Link Management Protocol (LMP) Test Messages Extensions for=
 Evaluative Optical Transport Networks (OTN)<br>
draft-ceccarelli-ccamp-gmpls-g709-lmp-test-03 <o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;">----<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;">Thanks,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;">Durga.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
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From daniele.ceccarelli@ericsson.com  Thu Jul 12 00:44:58 2012
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From: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>
To: Durga Prasad Thorati <DurgaPrasad.Thorati@ecitele.com>
Date: Thu, 12 Jul 2012 09:45:26 +0200
Thread-Topic: draft-ceccarelli-ccamp-gmpls-g709-lmp-test-03  expired
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Subject: Re: [CCAMP] draft-ceccarelli-ccamp-gmpls-g709-lmp-test-03  expired
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Hi Durga,

the draft is being revised and will be updated within the >00 deadline (Mon=
day 16th). If there will be time enough in the CCAMP agenda it will be pres=
ented in Vancouver.

Thanks,
Daniele

________________________________
From: Durga Prasad Thorati [mailto:DurgaPrasad.Thorati@ecitele.com]
Sent: gioved=EC 12 luglio 2012 9.36
To: Daniele Ceccarelli
Cc: ccamp@ietf.org; Sidd Aanand
Subject: draft-ceccarelli-ccamp-gmpls-g709-lmp-test-03 expired


Hi Daniele,

Below mentioned draft seems to be expired. Whether the contents merged with=
 any other document? Can you please let us know the details if in case?

----
Link Management Protocol (LMP) Test Messages Extensions for Evaluative Opti=
cal Transport Networks (OTN)
draft-ceccarelli-ccamp-gmpls-g709-lmp-test-03
----

Thanks,
Durga.



This e-mail message is intended for the recipient only and contains informa=
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you have received this transmission in error, please inform us by e-mail, p=
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<DIV dir=3Dltr align=3Dleft><SPAN class=3D400304307-12072012><FONT face=3DA=
rial=20
color=3D#0000ff size=3D2>Hi Durga,</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D400304307-12072012><FONT face=3DA=
rial=20
color=3D#0000ff size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D400304307-12072012><FONT face=3DA=
rial=20
color=3D#0000ff size=3D2>the draft is being revised and will be updated wit=
hin the=20
&gt;00 deadline (Monday 16th). If there will be time enough in the CCAMP ag=
enda=20
it will be presented in Vancouver.</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D400304307-12072012><FONT face=3DA=
rial=20
color=3D#0000ff size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D400304307-12072012><FONT face=3DA=
rial=20
color=3D#0000ff size=3D2>Thanks,<BR>Daniele</FONT></SPAN></DIV><BR>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px soli=
d; MARGIN-RIGHT: 0px">
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  <HR tabIndex=3D-1>
  <FONT face=3DTahoma size=3D2><B>From:</B> Durga Prasad Thorati=20
  [mailto:DurgaPrasad.Thorati@ecitele.com] <BR><B>Sent:</B> gioved=EC 12 lu=
glio=20
  2012 9.36<BR><B>To:</B> Daniele Ceccarelli<BR><B>Cc:</B> ccamp@ietf.org; =
Sidd=20
  Aanand<BR><B>Subject:</B> draft-ceccarelli-ccamp-gmpls-g709-lmp-test-03=20
  expired<BR></FONT><BR></DIV>
  <DIV></DIV>
  <DIV class=3DWordSection1>
  <P class=3DMsoNormal><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"><o:p>&nbsp;</o:p></=
SPAN></P>
  <P class=3DMsoNormal><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">Hi=20
  Daniele,<o:p></o:p></SPAN></P>
  <P class=3DMsoNormal><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"><o:p>&nbsp;</o:p></=
SPAN></P>
  <P class=3DMsoNormal><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">Below mentioned dra=
ft=20
  seems to be expired. Whether the contents merged with any other document?=
 Can=20
  you please let us know the details if in case?<o:p></o:p></SPAN></P>
  <P class=3DMsoNormal><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'"><o:p>&nbsp;</o:p></=
SPAN></P>
  <P class=3DMsoNormal><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">----<o:p></o:p></SP=
AN></P>
  <P class=3DMsoNormal><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">Link Management Pro=
tocol=20
  (LMP) Test Messages Extensions for Evaluative Optical Transport Networks=
=20
  (OTN)<BR>draft-ceccarelli-ccamp-gmpls-g709-lmp-test-03 <o:p></o:p></SPAN>=
</P>
  <P class=3DMsoNormal><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">----<o:p></o:p></SP=
AN></P>
  <P class=3DMsoNormal><SPAN=20
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SPAN></P>
  <P class=3DMsoNormal><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">Thanks,<o:p></o:p><=
/SPAN></P>
  <P class=3DMsoNormal><SPAN=20
  style=3D"FONT-SIZE: 10pt; FONT-FAMILY: 'Courier New'">Durga.<o:p></o:p></=
SPAN></P>
  <P class=3DMsoNormal><SPAN=20
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Subject: Re: [CCAMP] draft-ceccarelli-ccamp-gmpls-g709-lmp-test-03  expired
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Hi Daniele,

Thank you very much for the info and for quick response.

Regards,
Durga.

From: Daniele Ceccarelli [mailto:daniele.ceccarelli@ericsson.com]
Sent: Thursday, July 12, 2012 1:15 PM
To: Durga Prasad Thorati
Cc: ccamp@ietf.org; Sidd Aanand
Subject: RE: draft-ceccarelli-ccamp-gmpls-g709-lmp-test-03 expired

Hi Durga,

the draft is being revised and will be updated within the >00 deadline (Mond=
ay 16th). If there will be time enough in the CCAMP agenda it will be presen=
ted in Vancouver.

Thanks,
Daniele

________________________________
From: Durga Prasad Thorati [mailto:DurgaPrasad.Thorati@ecitele.com]
Sent: gioved=EC 12 luglio 2012 9.36
To: Daniele Ceccarelli
Cc: ccamp@ietf.org; Sidd Aanand
Subject: draft-ceccarelli-ccamp-gmpls-g709-lmp-test-03 expired

Hi Daniele,

Below mentioned draft seems to be expired. Whether the contents merged with=
 any other document? Can you please let us know the details if in case?

----
Link Management Protocol (LMP) Test Messages Extensions for Evaluative Optic=
al Transport Networks (OTN)
draft-ceccarelli-ccamp-gmpls-g709-lmp-test-03
----

Thanks,
Durga.



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<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;;color:#1F497D">Hi Daniele,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;;color:#1F497D">Thank you very much for the info and for quick=
 response.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;;color:#1F497D">Regards,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;;color:#1F497D">Durga.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span></p>
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0=
in 0in">
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot;=
Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span style=3D"font-siz=
e:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;"> Daniele Cec=
carelli [mailto:daniele.ceccarelli@ericsson.com]
<br>
<b>Sent:</b> Thursday, July 12, 2012 1:15 PM<br>
<b>To:</b> Durga Prasad Thorati<br>
<b>Cc:</b> ccamp@ietf.org; Sidd Aanand<br>
<b>Subject:</b> RE: draft-ceccarelli-ccamp-gmpls-g709-lmp-test-03 expired<o:=
p></o:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ari=
al&quot;,&quot;sans-serif&quot;;color:blue">Hi Durga,</span><span style=3D"f=
ont-size:12.0pt;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;"><=
o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;font-family:&quot;Tim=
es New Roman&quot;,&quot;serif&quot;">&nbsp;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ari=
al&quot;,&quot;sans-serif&quot;;color:blue">the draft is being revised and w=
ill be updated within the &gt;00 deadline (Monday 16th). If there will be ti=
me enough in the CCAMP agenda it will be presented in Vancouver.</span><span=
 style=3D"font-size:12.0pt;font-family:&quot;Times New Roman&quot;,&quot;ser=
if&quot;"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;font-family:&quot;Tim=
es New Roman&quot;,&quot;serif&quot;">&nbsp;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ari=
al&quot;,&quot;sans-serif&quot;;color:blue">Thanks,<br>
Daniele</span><span style=3D"font-size:12.0pt;font-family:&quot;Times New Ro=
man&quot;,&quot;serif&quot;"><o:p></o:p></span></p>
<blockquote style=3D"border:none;border-left:solid blue 1.5pt;padding:0in 0i=
n 0in 4.0pt;margin-left:3.75pt;margin-top:5.0pt;margin-right:0in;margin-bott=
om:5.0pt">
<p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;font-family:&quot;Tim=
es New Roman&quot;,&quot;serif&quot;"><o:p>&nbsp;</o:p></span></p>
<div class=3D"MsoNormal" align=3D"center" style=3D"text-align:center"><span=
 style=3D"font-size:12.0pt;font-family:&quot;Times New Roman&quot;,&quot;ser=
if&quot;">
<hr size=3D"2" width=3D"100%" align=3D"center">
</span></div>
<p class=3D"MsoNormal" style=3D"margin-bottom:12.0pt"><b><span style=3D"font=
-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;">From:</s=
pan></b><span style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&quot=
;sans-serif&quot;"> Durga Prasad Thorati [mailto:DurgaPrasad.Thorati@ecitele=
.com]
<br>
<b>Sent:</b> gioved=EC 12 luglio 2012 9.36<br>
<b>To:</b> Daniele Ceccarelli<br>
<b>Cc:</b> ccamp@ietf.org; Sidd Aanand<br>
<b>Subject:</b> draft-ceccarelli-ccamp-gmpls-g709-lmp-test-03 expired</span>=
<span style=3D"font-size:12.0pt;font-family:&quot;Times New Roman&quot;,&quo=
t;serif&quot;"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;">Hi Daniele,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;">Below mentioned draft seems to be expired. Whether the conte=
nts merged with any other document? Can you please let us know the details i=
f in case?<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;">----<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;">Link Management Protocol (LMP) Test Messages Extensions for=
 Evaluative Optical Transport Networks (OTN)<br>
draft-ceccarelli-ccamp-gmpls-g709-lmp-test-03 <o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;">----<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;">Thanks,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;">Durga.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;"><o:p>&nbsp;</o:p></span></p>
<p>This e-mail message is intended for the recipient only and contains infor=
mation which is CONFIDENTIAL and which may be proprietary to ECI Telecom. If=
 you have received this transmission in error, please inform us by e-mail, p=
hone or fax, and then delete
 the original and all copies thereof. <o:p></o:p></p>
</blockquote>
</div>
<p>This e-mail message is intended for the recipient only and contains infor=
mation which is CONFIDENTIAL and which may be proprietary to ECI Telecom. If=
 you have received this transmission in error, please inform us by e-mail, p=
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Subject: [CCAMP] I-D Action: draft-ietf-ccamp-otn-g709-info-model-04.txt
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A New Internet-Draft is available from the on-line Internet-Drafts director=
ies.
 This draft is a work item of the Common Control and Measurement Plane Work=
ing Group of the IETF.

	Title           : Information model for G.709 Optical Transport Networks (=
OTN)
	Author(s)       : Sergio Belotti
                          Pietro Vittorio Grandi
                          Daniele Ceccarelli
                          Diego Caviglia
                          Fatai Zhang
                          Dan Li
	Filename        : draft-ietf-ccamp-otn-g709-info-model-04.txt
	Pages           : 24
	Date            : 2012-07-12

Abstract:
   The recent revision of ITU-T recommendation G.709 [G.709-v3] has
   introduced new fixed and flexible ODU containers in Optical Transport
   Networks (OTNs), enabling optimized support for an increasingly
   abundant service mix.

   This document provides a model of information needed by the routing
   and signaling process in OTNs to support Generalized Multiprotocol
   Label Switching (GMPLS) control of all currently defined ODU
   containers.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-ccamp-otn-g709-info-model

There's also a htmlized version available at:
http://tools.ietf.org/html/draft-ietf-ccamp-otn-g709-info-model-04

A diff from previous version is available at:
http://tools.ietf.org/rfcdiff?url2=3Ddraft-ietf-ccamp-otn-g709-info-model-04


Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/


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Fatai,
	Sure get the document out.  Given there will still be 2 weeks after
that before the meeting, and that WG consensus must be achieved on the
list, we should continue the discussion on the list (i.e., reply to my
previous mail) once the draft is submitted and not wait for Vancouver.

As I mentioned in my previous mail, the shift towards leveraging
technology-independent GMPLS mechanisms to address intra-OTN H-LSP
signaling is well aligned with the WG charter/objectives. I think we
should try not to loose momentum by waiting for the meeting.

Lou

On 7/12/2012 2:25 AM, Fatai Zhang wrote:
> Hi Lou,
> 
> How about let me update the draft first, because I only have two
> working days to update and submit a new version? :-)
> 
> Let's discuss more in Vancouver meeting and get the WG consensus
> there.
> 
> Anyway, any changes should defer to the WG consensus, otherwise the
> authors would like to continue to update the draft based on WG
> consensus.
>  
> Thanks
> 
> Fatai
> 
> 
> -----ʼԭ-----
> : Lou Berger [mailto:lberger@labn.net] 
> ʱ: 2012711 21:38
> ռ: Fatai Zhang
> : ccamp@ietf.org; Khuzema Pithewan; zhangguoying@mail.ritt.com.cn; daniele.ceccarelli@ericsson.com; Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO VITTORIO); diego.caviglia@ericsson.com; Rajan Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO); John E Drake
> : Re: : : Updates on OTN signaling draft
> 
> Fatai,
> 	It sounds you/the Authors are proposing/moving towards G-PID + MRN/MLN
> to support intra-OTN H-LSPs.  From a WG perspective, this is great as it
> leverages/extends existing technology-independent GMPLS mechanisms.
> 
> I think you may have missed a process point in my previous mail.
> 
> As I'm sure you know, author's consensus does not mean there is WG
> consensus.  You say that there has been much (off-line) discussion among
> the authors. While off-line discussions are always a fine way to make
> progress among individuals, the results of private discussions do not
> represent WG consensus.
> 
> So from my previous mail:
>> Can one of the authors summarize the [off-line author's]
>> discussion for the WG?
> 
> ...
> 
>>> [Authors] The authors would like to focus on OTN specific by
>>> removing Encoding type and Switching type in the Hierarchy TLV
>>> (but keeping Signal Type). It is OK to have a new draft to cover
>>> generic intra-technology MLN.
>>
>> How is the revised TLV to be used?  Do the authors have a specific
>> proposal that covers "generic intra-technology MLN"?
> 
> Lou
> 
> BTW The use of G-PID was first discussed in
> draft-ietf-ccamp-otn-g709-info-model-01 and Signal Type in John's mail
> on 7/27/2011.
> 
> On 7/11/2012 2:24 AM, Fatai Zhang wrote:
>> Hi Lou,
>>
>> Let me repeat the requirement of this information. 
>> When an ODU (e.g., ODU1) with one specific TSG (because of the ingress interface constraint) needs to be created over another higher ODU (e.g., ODU3 FA-LSP), the penultimate hop of this ODU3 FA-LSP needs to be aware of which TSG should be picked up from the TE link (ie., choose the right component link which can support the client TSG), so the client TSG information (and hierarchy information) needs to be conveyed in the signaling to create the ODU FA-LSP. 
>>
>> The requirement has been discussed in the previous IETF meetings, please get more information from the presentation slides of Taipei and Paris meetings.
>>
>> Given that people understand the above requirment, let's focus on the potential solutions. In Taipei meeting, the authors compared three alternatives and discussed in the list:
>> (1) Introducing a new object: WG prefer to re-use the existing things, so the authors switched to (2).
>> (2) Extending GPID to carry TSG/PT information: Lou once suggested this approach and the authors finally agreed on this because it is needed only for penultimate hop to select right link to egress. Note that TSG isn't needed for loose ERO expansion.
>> (3) Extending Encoding Type: Encoding type is an end to end constraint (See RFC4328), so the authors think it is not the right place.
>>
>> Do we need to poll how many people support which approach perspectively (or any other approach)?
>>
>>
>>
>> Thanks
>>
>> Fatai
>>
>>
>> -----ʼԭ-----
>> : Lou Berger [mailto:lberger@labn.net] 
>> ʱ: 2012710 22:33
>> ռ: Fatai Zhang
>> : ccamp@ietf.org; Khuzema Pithewan; zhangguoying@mail.ritt.com.cn; daniele.ceccarelli@ericsson.com; Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO VITTORIO); diego.caviglia@ericsson.com; Rajan Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO); John E Drake
>> : Re: : Updates on OTN signaling draft
>>
>> Fatai,
>>
>> See below for in-line responses.
>>
>> On 7/10/2012 5:34 AM, Fatai Zhang wrote:
>>>
>>>
>>> Hi Lou,
>>>
>>>  
>>>
>>> Please see in-line below.
>>>>  
>>>
>>> Note that lets use HTML format to make the mails readable, J
>>>
>>>    
>>>
>>> Thanks
>>>
>>>  
>>>
>>> Fatai
>>>
>>>  
>>>
>>>  
>>>
>>> -----ʼԭ-----
>>> : Lou Berger [mailto:lberger@labn.net]
>>> ʱ: 2012710 5:27
>>> ռ: Fatai Zhang
>>> : ccamp@ietf.org; Khuzema Pithewan; zhangguoying@mail.ritt.com.cn;
>>> daniele.ceccarelli@ericsson.com; Linyi; xuyunbin@mail.ritt.com.cn;
>>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO); diego.caviglia@ericsson.com;
>>> Rajan Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO); John E Drake
>>> : Re: Updates on OTN signaling draft
>>>
>>>  
>>>
>>> [Woops, this was stuck in my outbox from last week!]
>>>
>>>  
>>>
>>> Fatai/Authors,
>>>
>>>          G-PID is a fine place to carry information about the format/type of information carried by an LSP. An important consideration is that G-PID information is not used as part of path computation, and is not used by transit nodes except in the case of the penultimate hop (for PHP).
>>>  
>>> When we last discussed this, some authors stated that TSG was needed as part of path computation, including at transit nodes doing loose ERO expansion.  Hence the discussed inclusion of TSG in LSP Encoding Type.
>>>
>>> If the authors are now willing to state that TSG isn't needed for loose ERO expansion, then G-PID seems the perfect choice.
>>>
>>> Do all the authors agree with such this statement (and change)?
>>  
>>> [Authors] After lots of discussion, the authors came to conclude that it is needed only for penultimate hop to select right link to egress and hence the change.
>>
>> Can one of the authors summarize the discussion for the WG?
>>
>> The authors are asking for WG support, so should provide the technical basis for the position. Once the requirements are articulated, the WG can be in a position to judge/agree/disagree with the proposed solution.
>>
>>>
>>> As I mentioned on the on the conference call, and my mail of 6/18, the use of G-PID as part of a path selection is really part of the general issue seen in MLN. On the call we agreed that non-OTN MLN will be handled as the standard MLN case, without OTN-specific additions.
>>>
>>> Unless I'm misreading your mail, you are *not* proposing to treat the intra-OTN (hierarchy) case as generic MLN but rather a special case by bundling some upper OTN hierarchy information as part of a lower H-LSPs (in Hierarchy TLV).
>>>
>>> Correct?
>>>
>>> [Authors] Correct, it is the latter one.
>>>
>>> If my reading is correct, then I think the authors need to discuss their technical reasons for their "preference" and why the previously reached compromise position (as articulated in my mail of 6/18) is not acceptable.
>>>
>>> [Authors] After checking after conf call, the authors think that Encoding type is an end to end constraint (See RFC4328) and GPID should be the right place as you mention above.
>>
>> This goes to requirements, in today's GMPLS G-PID is not part of path computation except in the context of MRN/MLN.
>>
>>>
>>> Speaking only as an individual contributor, given the difficulty in reaching a consensus on how to treat intra-OTN (hierarchy) as a special case, I personally now prefer to avoid any technology specific co-mingling of layers and to address the intra-OTN (hierarchy) case via generic MLN (or other generic mechanisms).  I think this position would translate to removing the Hierarchy TLV from the OTN signaling draft and spinning up a new draft to cover (OTN and generic) intra-technology MLN.
>>>
>>> [Authors] The authors would like to focus on OTN specific by removing Encoding type and Switching type in the Hierarchy TLV(but keeping Signal Type). It is OK to have a new draft to cover generic intra-technology MLN.
>>
>> How is the revised TLV to be used?  Do the authors have a specific proposal that covers "generic intra-technology MLN"?
>>
>> Lou
>>
>>>
>>>  
>>> Lou
>>>
>>>  
>>>
>>> On 7/5/2012 9:25 PM, Fatai Zhang wrote:
>>>
>>>>
>>>
>>>> Hi all,
>>>
>>>>
>>>
>>>> We are updating OTN signaling draft. Since we had lots of discussion on
>>> the TSG stuff in the list, let's converge on the solution.
>>>
>>>>
>>>
>>>> Based on the previous discussion between Lou and co-authors, the
>>> authors prefer the following changes:
>>>
>>>>
>>>
>>>> (1) Extending GPID to carry TSG in signaling, since its purpose in
>>> signaling is to ensure that endpoints of the LSP being signaled have a
>>> consistent view of the TSG to be offered to its clients and LSP endpoint
>>> consistency is the purpose for which the GPID was designed.
>>>
>>>>
>>>
>>>> (2)Extending LSPA to carry hierarchy information (ie., Type=2 Hierarchy
>>> TLV).
>>>
>>>>
>>>
>>>> Any comments?
>>>
>>>>
>>>
>>>> Thanks
>>>
>>>>
>>>
>>>> Fatai
>>>

From lberger@labn.net  Thu Jul 12 07:30:03 2012
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Fatai,
	I think I agree with John (as WG contributor).

Why isn't the same issue present for non-bundled links when ERO
expansion takes place at any place other than the ingress node?

How does this issue differ from any MLN H-LSP?

Lou

On 7/11/2012 11:54 PM, Fatai Zhang wrote:
> 
> 
> Hi John,
> 
>  
> 
> I think TSG and hierarchy information really confused many people, which
> causes the same questions will come out again after we explained many
> times, :-)
> 
>  
> 
> The simple way is to remove link bundling (or bundle the homogeneous
> component links) in the routing, then all the issues disappear
> immediately ( i.e., no need TSG and hierarchy information at all),
> otherwise, it needs these two kinds of information in some cases.
> 
>  
> 
> I really suspect the value of bundling in the GMPLS for TDM or WSON. I
> think this is interesting point to be investigated, but it seems that
> not too many people are interested, J
> 
>  
> 
> Please see in-line below.
> 
>  
> 
>  
> 
>  
> 
> Thanks
> 
>  
> 
> Fatai
> 
>  
> 
>  
> 
> -----ʼԭ-----
> : John E Drake [mailto:jdrake@juniper.net]
> ʱ: 2012712 2:54
> ռ: Fatai Zhang; Lou Berger
> : ccamp@ietf.org; Khuzema Pithewan; zhangguoying@mail.ritt.com.cn;
> daniele.ceccarelli@ericsson.com; Linyi; xuyunbin@mail.ritt.com.cn;
> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO); diego.caviglia@ericsson.com;
> Rajan Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO)
> : RE: : Updates on OTN signaling draft
> 
>  
> 
> Fatai,
> 
>  
> 
> Is it not the case that *any* node, regardless of whether it is the
> ingress node, an intermediate node, or the penultimate node, that
> selects the interface for the egress LSP endpoint MUST ensure that that
> interface has a TSG that is compatible with the TSG of interface for the
> ingress LSP endpoint?
> 
>  
> 
> [Fatai] There are two cases for TSG issue. One is for ODU service LSP
> (carrying non-ODU) creation, the second one is ODU FA-LSP creation for
> carrying another lower ODU. For the first case, the TSG can be
> changeable segment by segment (link by link). For example, when an ODU1
> (to carry non-ODU) is being created over ODU3 link, the TSG could be
> different link by link. For the second case, this is what we are talking
> about with Lou; in this case, only end points and penultimate node need
> to have the compatible TSG.
> 
>  
> 
> Also, it occurs to me that hierarchy is not only unnecessary but
> counter-productive in signaling.  When one establishes an ODU3, for
> example, that ODU3 may be used to instantiate multiple hierarchies, so
> one does not want to specify a particular hierarchy.
> 
>  
> 
> If one is establishing this ODU3 in order to eventually establish an
> ODU0 LSP over an ODU2 LSP, then after the ODU3 is established, the ODU2
> would be signaled within the ODU3.  Again, since the ODU2 might support
> multiple hierarchies, one does not want to specify a particular hierarchy.
> 
>  
> 
> Once the OUD2 is established, the ODU0 is signaled.  Since it does not
> support any further hierarchy, none is specified.
> 
>  
> 
> [Fatai] Hierarchy information is necessary when bundling link is used.
> For your example, ODU0->ODU2->ODU3, when creating ODU2 FA-LSP over ODU3
> links, ODU2 layer should be aware of that it should pick up the right
> component link that can support ODU0 muxing (so the hierarchy ODU0->ODU2
> should be carried when creating ODU2 FA-LSP), otherwise, this arbitrary
> ODU2 could be only support ODU1->ODU2, then ODU0 cannot be carried over
> this ODU2 FA-LSP.
> 
>  
> 
> Thanks,
> 
>  
> 
> John
> 
>  
> 
> Sent from my iPhone
> 
>  
> 
>> -----Original Message-----
> 
>> From: Fatai Zhang [mailto:zhangfatai@huawei.com]
> 
>> Sent: Tuesday, July 10, 2012 11:25 PM
> 
>> To: Lou Berger
> 
>> Cc: ccamp@ietf.org; Khuzema Pithewan; zhangguoying@mail.ritt.com.cn;
> 
>> daniele.ceccarelli@ericsson.com; Linyi; xuyunbin@mail.ritt.com.cn;
> 
>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO); diego.caviglia@ericsson.com;
> 
>> Rajan Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO); John E
> 
>> Drake
> 
>> Subject: : : Updates on OTN signaling draft
> 
>>
> 
>> Hi Lou,
> 
>>
> 
>> Let me repeat the requirement of this information.
> 
>> When an ODU (e.g., ODU1) with one specific TSG (because of the ingress
> 
>> interface constraint) needs to be created over another higher ODU
> 
>> (e.g., ODU3 FA-LSP), the penultimate hop of this ODU3 FA-LSP needs to
> 
>> be aware of which TSG should be picked up from the TE link (ie., choose
> 
>> the right component link which can support the client TSG), so the
> 
>> client TSG information (and hierarchy information) needs to be conveyed
> 
>> in the signaling to create the ODU FA-LSP.
> 
>>
> 
>> The requirement has been discussed in the previous IETF meetings,
> 
>> please get more information from the presentation slides of Taipei and
> 
>> Paris meetings.
> 
>>
> 
>> Given that people understand the above requirment, let's focus on the
> 
>> potential solutions. In Taipei meeting, the authors compared three
> 
>> alternatives and discussed in the list:
> 
>> (1) Introducing a new object: WG prefer to re-use the existing things,
> 
>> so the authors switched to (2).
> 
>> (2) Extending GPID to carry TSG/PT information: Lou once suggested this
> 
>> approach and the authors finally agreed on this because it is needed
> 
>> only for penultimate hop to select right link to egress. Note that TSG
> 
>> isn't needed for loose ERO expansion.
> 
>> (3) Extending Encoding Type: Encoding type is an end to end constraint
> 
>> (See RFC4328), so the authors think it is not the right place.
> 
>>
> 
>> Do we need to poll how many people support which approach perspectively
> 
>> (or any other approach)?
> 
>>
> 
>>
> 
>>
> 
>> Thanks
> 
>>
> 
>> Fatai
> 
>>
> 
>>
> 
>> -----ʼԭ-----
> 
>> : Lou Berger [mailto:lberger@labn.net]
> 
>> ʱ: 2012710 22:33
> 
>> ռ: Fatai Zhang
> 
>> : ccamp@ietf.org; Khuzema Pithewan; zhangguoying@mail.ritt.com.cn;
> 
>> daniele.ceccarelli@ericsson.com; Linyi; xuyunbin@mail.ritt.com.cn;
> 
>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO); diego.caviglia@ericsson.com;
> 
>> Rajan Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO); John E
> 
>> Drake
> 
>> : Re: : Updates on OTN signaling draft
> 
>>
> 
>> Fatai,
> 
>>
> 
>> See below for in-line responses.
> 
>>
> 
>> On 7/10/2012 5:34 AM, Fatai Zhang wrote:
> 
>> >
> 
>> >
> 
>> > Hi Lou,
> 
>> >
> 
>> >
> 
>> >
> 
>> > Please see in-line below.
> 
>> > >
> 
>> >
> 
>> > Note that lets use HTML format to make the mails readable, J
> 
>> >
> 
>> >
> 
>> >
> 
>> > Thanks
> 
>> >
> 
>> >
> 
>> >
> 
>> > Fatai
> 
>> >
> 
>> >
> 
>> >
> 
>> >
> 
>> >
> 
>> > -----ʼԭ-----
> 
>> > : Lou Berger [mailto:lberger@labn.net]
> 
>> > ʱ: 2012710 5:27
> 
>> > ռ: Fatai Zhang
> 
>> > : ccamp@ietf.org; Khuzema Pithewan;
> 
>> zhangguoying@mail.ritt.com.cn;
> 
>> > daniele.ceccarelli@ericsson.com; Linyi; xuyunbin@mail.ritt.com.cn;
> 
>> > GRANDI, PIETRO VITTORIO (PIETRO VITTORIO);
> 
>> > diego.caviglia@ericsson.com; Rajan Rao; IBryskin@advaoptical.com;
> 
>> > BELOTTI, SERGIO (SERGIO); John E Drake
> 
>> > : Re: Updates on OTN signaling draft
> 
>> >
> 
>> >
> 
>> >
> 
>> > [Woops, this was stuck in my outbox from last week!]
> 
>> >
> 
>> >
> 
>> >
> 
>> > Fatai/Authors,
> 
>> >
> 
>> >          G-PID is a fine place to carry information about the
> 
>> format/type of information carried by an LSP. An important
> 
>> consideration is that G-PID information is not used as part of path
> 
>> computation, and is not used by transit nodes except in the case of the
> 
>> penultimate hop (for PHP).
> 
>> >
> 
>> > When we last discussed this, some authors stated that TSG was needed
> 
>> as part of path computation, including at transit nodes doing loose ERO
> 
>> expansion.  Hence the discussed inclusion of TSG in LSP Encoding Type.
> 
>> >
> 
>> > If the authors are now willing to state that TSG isn't needed for
> 
>> loose ERO expansion, then G-PID seems the perfect choice.
> 
>> >
> 
>> > Do all the authors agree with such this statement (and change)?
> 
>>
> 
>> > [Authors] After lots of discussion, the authors came to conclude that
> 
>> it is needed only for penultimate hop to select right link to egress
> 
>> and hence the change.
> 
>>
> 
>> Can one of the authors summarize the discussion for the WG?
> 
>>
> 
>> The authors are asking for WG support, so should provide the technical
> 
>> basis for the position. Once the requirements are articulated, the WG
> 
>> can be in a position to judge/agree/disagree with the proposed
> 
>> solution.
> 
>>
> 
>> >
> 
>> > As I mentioned on the on the conference call, and my mail of 6/18,
> 
>> the use of G-PID as part of a path selection is really part of the
> 
>> general issue seen in MLN. On the call we agreed that non-OTN MLN will
> 
>> be handled as the standard MLN case, without OTN-specific additions.
> 
>> >
> 
>> > Unless I'm misreading your mail, you are *not* proposing to treat the
> 
>> intra-OTN (hierarchy) case as generic MLN but rather a special case by
> 
>> bundling some upper OTN hierarchy information as part of a lower H-LSPs
> 
>> (in Hierarchy TLV).
> 
>> >
> 
>> > Correct?
> 
>> >
> 
>> > [Authors] Correct, it is the latter one.
> 
>> >
> 
>> > If my reading is correct, then I think the authors need to discuss
> 
>> their technical reasons for their "preference" and why the previously
> 
>> reached compromise position (as articulated in my mail of 6/18) is not
> 
>> acceptable.
> 
>> >
> 
>> > [Authors] After checking after conf call, the authors think that
> 
>> Encoding type is an end to end constraint (See RFC4328) and GPID should
> 
>> be the right place as you mention above.
> 
>>
> 
>> This goes to requirements, in today's GMPLS G-PID is not part of path
> 
>> computation except in the context of MRN/MLN.
> 
>>
> 
>> >
> 
>> > Speaking only as an individual contributor, given the difficulty in
> 
>> reaching a consensus on how to treat intra-OTN (hierarchy) as a special
> 
>> case, I personally now prefer to avoid any technology specific co-
> 
>> mingling of layers and to address the intra-OTN (hierarchy) case via
> 
>> generic MLN (or other generic mechanisms).  I think this position would
> 
>> translate to removing the Hierarchy TLV from the OTN signaling draft
> 
>> and spinning up a new draft to cover (OTN and generic) intra-technology
> 
>> MLN.
> 
>> >
> 
>> > [Authors] The authors would like to focus on OTN specific by removing
> 
>> Encoding type and Switching type in the Hierarchy TLV(but keeping
> 
>> Signal Type). It is OK to have a new draft to cover generic intra-
> 
>> technology MLN.
> 
>>
> 
>> How is the revised TLV to be used?  Do the authors have a specific
> 
>> proposal that covers "generic intra-technology MLN"?
> 
>>
> 
>> Lou
> 
>>
> 
>> >
> 
>> >
> 
>> > Lou
> 
>> >
> 
>> >
> 
>> >
> 
>> > On 7/5/2012 9:25 PM, Fatai Zhang wrote:
> 
>> >
> 
>> >>
> 
>> >
> 
>> >> Hi all,
> 
>> >
> 
>> >>
> 
>> >
> 
>> >> We are updating OTN signaling draft. Since we had lots of discussion
> 
>> >> on
> 
>> > the TSG stuff in the list, let's converge on the solution.
> 
>> >
> 
>> >>
> 
>> >
> 
>> >> Based on the previous discussion between Lou and co-authors, the
> 
>> > authors prefer the following changes:
> 
>> >
> 
>> >>
> 
>> >
> 
>> >> (1) Extending GPID to carry TSG in signaling, since its purpose in
> 
>> > signaling is to ensure that endpoints of the LSP being signaled have
> 
>> a
> 
>> > consistent view of the TSG to be offered to its clients and LSP
> 
>> > endpoint consistency is the purpose for which the GPID was designed.
> 
>> >
> 
>> >>
> 
>> >
> 
>> >> (2)Extending LSPA to carry hierarchy information (ie., Type=2
> 
>> >> Hierarchy
> 
>> > TLV).
> 
>> >
> 
>> >>
> 
>> >
> 
>> >> Any comments?
> 
>> >
> 
>> >>
> 
>> >
> 
>> >> Thanks
> 
>> >
> 
>> >>
> 
>> >
> 
>> >> Fatai
> 
>> >
> 

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From: John E Drake <jdrake@juniper.net>
To: Fatai Zhang <zhangfatai@huawei.com>, Lou Berger <lberger@labn.net>
Date: Thu, 12 Jul 2012 09:48:16 -0700
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</o:shapelayout></xml><![endif]--></head><body lang=3DEN-US link=3Dblue vli=
nk=3Dpurple style=3D'text-justify-trim:punctuation'><div class=3DWordSectio=
n1><p class=3DMsoNormal><span style=3D'font-size:11.0pt;color:#1F497D'>Comm=
ents inline<o:p></o:p></span></p><p class=3DMsoNormal><span style=3D'font-s=
ize:11.0pt;color:#1F497D'><o:p>&nbsp;</o:p></span></p><div><p class=3DMsoNo=
rmal align=3Dleft style=3D'text-align:left'><span style=3D'font-size:11.0pt=
;color:#1F497D'>Sent from my iPhone<o:p></o:p></span></p></div><p class=3DM=
soNormal><span style=3D'font-size:11.0pt;color:#1F497D'><o:p>&nbsp;</o:p></=
span></p><div style=3D'border:none;border-left:solid blue 1.5pt;padding:0in=
 0in 0in 4.0pt'><div><div style=3D'border:none;border-top:solid #B5C4DF 1.0=
pt;padding:3.0pt 0in 0in 0in'><p class=3DMsoNormal align=3Dleft style=3D'te=
xt-align:left'><b><span style=3D'font-size:10.0pt;font-family:"Tahoma","san=
s-serif"'>From:</span></b><span style=3D'font-size:10.0pt;font-family:"Taho=
ma","sans-serif"'> Fatai Zhang [mailto:zhangfatai@huawei.com] <br><b>Sent:<=
/b> Wednesday, July 11, 2012 8:54 PM<br><b>To:</b> John E Drake; Lou Berger=
<br><b>Cc:</b> ccamp@ietf.org; Khuzema Pithewan; zhangguoying@mail.ritt.com=
.cn; daniele.ceccarelli@ericsson.com; Linyi; xuyunbin@mail.ritt.com.cn; GRA=
NDI, PIETRO VITTORIO (PIETRO VITTORIO); diego.caviglia@ericsson.com; Rajan =
Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO)<br><b>Subject:</b> =
</span><span lang=3DZH-CN style=3D'font-size:10.0pt;font-family:SimSun'>=B4=
=F0=B8=B4</span><span style=3D'font-size:10.0pt;font-family:"Tahoma","sans-=
serif"'>: </span><span lang=3DZH-CN style=3D'font-size:10.0pt;font-family:S=
imSun'>=B4=F0=B8=B4</span><span style=3D'font-size:10.0pt;font-family:"Taho=
ma","sans-serif"'>: Updates on OTN signaling draft<o:p></o:p></span></p></d=
iv></div><p class=3DMsoNormal align=3Dleft style=3D'text-align:left'><o:p>&=
nbsp;</o:p></p><p class=3DMsoPlainText>Hi John,<o:p></o:p></p><p class=3DMs=
oPlainText><o:p>&nbsp;</o:p></p><p class=3DMsoPlainText>I think TSG and hie=
rarchy information really confused many people, which causes the same quest=
ions will come out again after we explained many times, :-) <o:p></o:p></p>=
<p class=3DMsoPlainText><o:p>&nbsp;</o:p></p><p class=3DMsoPlainText>The si=
mple way is to remove link bundling (or bundle the homogeneous component li=
nks) in the routing, then all the issues disappear immediately ( i.e., no n=
eed TSG and hierarchy information at all), otherwise, it needs these two ki=
nds of information in some cases.<o:p></o:p></p><p class=3DMsoPlainText><o:=
p>&nbsp;</o:p></p><p class=3DMsoPlainText>I really suspect the value of bun=
dling in the GMPLS for TDM or WSON. I think this is interesting point to be=
 investigated, but it seems that not too many people are interested, <span =
style=3D'font-family:Wingdings'>J</span><o:p></o:p></p><p class=3DMsoPlainT=
ext><o:p>&nbsp;</o:p></p><p class=3DMsoPlainText>Please see in-line below.<=
o:p></o:p></p><p class=3DMsoPlainText><o:p>&nbsp;</o:p></p><p class=3DMsoPl=
ainText><o:p>&nbsp;</o:p></p><p class=3DMsoPlainText><o:p>&nbsp;</o:p></p><=
p class=3DMsoPlainText>Thanks<o:p></o:p></p><p class=3DMsoPlainText><o:p>&n=
bsp;</o:p></p><p class=3DMsoPlainText>Fatai<o:p></o:p></p><p class=3DMsoPla=
inText><o:p>&nbsp;</o:p></p><p class=3DMsoPlainText><o:p>&nbsp;</o:p></p><p=
 class=3DMsoPlainText>-----<span lang=3DZH-CN style=3D'font-family:SimSun'>=
=D3=CA=BC=FE=D4=AD=BC=FE</span>-----<br><span lang=3DZH-CN style=3D'font-fa=
mily:SimSun'>=B7=A2=BC=FE=C8=CB</span>: John E Drake [<a href=3D"mailto:jdr=
ake@juniper.net">mailto:jdrake@juniper.net</a>] <br><span lang=3DZH-CN styl=
e=3D'font-family:SimSun'>=B7=A2=CB=CD=CA=B1=BC=E4</span>: 2012<span lang=3D=
ZH-CN style=3D'font-family:SimSun'>=C4=EA</span>7<span lang=3DZH-CN style=
=3D'font-family:SimSun'>=D4=C2</span>12<span lang=3DZH-CN style=3D'font-fam=
ily:SimSun'>=C8=D5</span> 2:54<br><span lang=3DZH-CN style=3D'font-family:S=
imSun'>=CA=D5=BC=FE=C8=CB</span>: Fatai Zhang; Lou Berger<br><span lang=3DZ=
H-CN style=3D'font-family:SimSun'>=B3=AD=CB=CD</span>: <a href=3D"mailto:cc=
amp@ietf.org">ccamp@ietf.org</a>; Khuzema Pithewan; <a href=3D"mailto:zhang=
guoying@mail.ritt.com.cn">zhangguoying@mail.ritt.com.cn</a>; <a href=3D"mai=
lto:daniele.ceccarelli@ericsson.com">daniele.ceccarelli@ericsson.com</a>; L=
inyi; <a href=3D"mailto:xuyunbin@mail.ritt.com.cn">xuyunbin@mail.ritt.com.c=
n</a>; GRANDI, PIETRO VITTORIO (PIETRO VITTORIO); <a href=3D"mailto:diego.c=
aviglia@ericsson.com">diego.caviglia@ericsson.com</a>; Rajan Rao; <a href=
=3D"mailto:IBryskin@advaoptical.com">IBryskin@advaoptical.com</a>; BELOTTI,=
 SERGIO (SERGIO)<br><span lang=3DZH-CN style=3D'font-family:SimSun'>=D6=F7=
=CC=E2</span>: RE: <span lang=3DZH-CN style=3D'font-family:SimSun'>=B4=F0=
=B8=B4</span>: Updates on OTN signaling draft<o:p></o:p></p><p class=3DMsoP=
lainText><o:p>&nbsp;</o:p></p><p class=3DMsoPlainText>Fatai,<o:p></o:p></p>=
<p class=3DMsoPlainText><o:p>&nbsp;</o:p></p><p class=3DMsoPlainText>Is it =
not the case that *any* node, regardless of whether it is the ingress node,=
 an intermediate node, or the penultimate node, that selects the interface =
for the egress LSP endpoint MUST ensure that that interface has a TSG that =
is compatible with the TSG of interface for the ingress LSP endpoint?<o:p><=
/o:p></p><p class=3DMsoPlainText><span style=3D'color:black'><o:p>&nbsp;</o=
:p></span></p><p class=3DMsoPlainText><span style=3D'color:#548DD4'>[Fatai]=
 There are two cases for TSG issue. One is for ODU service LSP (carrying no=
n-ODU) creation, the second one is ODU FA-LSP creation for carrying another=
 lower ODU. For the first case, the TSG can be changeable segment by segmen=
t (link by link). For example, when an ODU1 (to carry non-ODU) is being cre=
ated over ODU3 link, the TSG could be different link by link. For the secon=
d case, this is what we are talking about with Lou; in this case, only end =
points and penultimate node need to have the compatible TSG. <o:p></o:p></s=
pan></p><p class=3DMsoPlainText><span style=3D'font-size:11.0pt;color:#1F49=
7D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoPlainText><span style=3D'font=
-size:11.0pt;color:#1F497D'>JD:&nbsp; I am talking about the second case as=
 well.&nbsp; The issue is that the endpoints of a hierarchical LSP need to =
be the same wrt TSG.&nbsp; Therefore, the node that selects egress LSP inte=
rface must ensure this.&nbsp; In most cases this is the ingress node, howev=
er, it can be any node along LSP=A1=AFs path including the penultimate node=
.&nbsp; To keep insisting that it is only an issue for the penultimate node=
 is incorrect.<o:p></o:p></span></p><p class=3DMsoPlainText><span style=3D'=
color:black'><o:p>&nbsp;</o:p></span></p><p class=3DMsoPlainText>Also, it o=
ccurs to me that hierarchy is not only unnecessary but counter-productive i=
n signaling.&nbsp; When one establishes an ODU3, for example, that ODU3 may=
 be used to instantiate multiple hierarchies, so one does not want to speci=
fy a particular hierarchy.<o:p></o:p></p><p class=3DMsoPlainText><o:p>&nbsp=
;</o:p></p><p class=3DMsoPlainText>If one is establishing this ODU3 in orde=
r to eventually establish an ODU0 LSP over an ODU2 LSP, then after the ODU3=
 is established, the ODU2 would be signaled within the ODU3.&nbsp; Again, s=
ince the ODU2 might support multiple hierarchies, one does not want to spec=
ify a particular hierarchy.<o:p></o:p></p><p class=3DMsoPlainText><o:p>&nbs=
p;</o:p></p><p class=3DMsoPlainText>Once the OUD2 is established, the ODU0 =
is signaled.&nbsp; Since it does not support any further hierarchy, none is=
 specified.<o:p></o:p></p><p class=3DMsoPlainText><o:p>&nbsp;</o:p></p><p c=
lass=3DMsoPlainText><span style=3D'color:#548DD4'>[Fatai] Hierarchy informa=
tion is necessary when bundling link is used. For your example, ODU0-&gt;OD=
U2-&gt;ODU3, when creating ODU2 FA-LSP over ODU3 links, ODU2 layer should b=
e aware of that it should pick up the right component link that can support=
 ODU0 muxing (so the hierarchy ODU0-&gt;ODU2 should be carried when creatin=
g ODU2 FA-LSP), otherwise, this arbitrary ODU2 could be only support ODU1-&=
gt;ODU2, then ODU0 cannot be carried over this ODU2 FA-LSP.<o:p></o:p></spa=
n></p><p class=3DMsoPlainText><span style=3D'font-size:11.0pt;color:#1F497D=
'><o:p>&nbsp;</o:p></span></p><p class=3DMsoPlainText><span style=3D'font-s=
ize:11.0pt;color:#1F497D'>JD:&nbsp; Hierarchy is unnecessary in signaling a=
s I indicated in my example, above.<o:p></o:p></span></p><p class=3DMsoPlai=
nText><span style=3D'font-size:11.0pt;color:#1F497D'><o:p>&nbsp;</o:p></spa=
n></p><p class=3DMsoPlainText>Thanks,<o:p></o:p></p><p class=3DMsoPlainText=
><o:p>&nbsp;</o:p></p><p class=3DMsoPlainText>John <o:p></o:p></p><p class=
=3DMsoPlainText><o:p>&nbsp;</o:p></p><p class=3DMsoPlainText>Sent from my i=
Phone<o:p></o:p></p><p class=3DMsoPlainText><o:p>&nbsp;</o:p></p><p class=
=3DMsoPlainText>&gt; -----Original Message-----<o:p></o:p></p><p class=3DMs=
oPlainText>&gt; From: Fatai Zhang [<a href=3D"mailto:zhangfatai@huawei.com"=
>mailto:zhangfatai@huawei.com</a>]<o:p></o:p></p><p class=3DMsoPlainText>&g=
t; Sent: Tuesday, July 10, 2012 11:25 PM<o:p></o:p></p><p class=3DMsoPlainT=
ext>&gt; To: Lou Berger<o:p></o:p></p><p class=3DMsoPlainText>&gt; Cc: <a h=
ref=3D"mailto:ccamp@ietf.org">ccamp@ietf.org</a>; Khuzema Pithewan; <a href=
=3D"mailto:zhangguoying@mail.ritt.com.cn">zhangguoying@mail.ritt.com.cn</a>=
;<o:p></o:p></p><p class=3DMsoPlainText>&gt; <a href=3D"mailto:daniele.cecc=
arelli@ericsson.com">daniele.ceccarelli@ericsson.com</a>; Linyi; <a href=3D=
"mailto:xuyunbin@mail.ritt.com.cn">xuyunbin@mail.ritt.com.cn</a>;<o:p></o:p=
></p><p class=3DMsoPlainText>&gt; GRANDI, PIETRO VITTORIO (PIETRO VITTORIO)=
; <a href=3D"mailto:diego.caviglia@ericsson.com">diego.caviglia@ericsson.co=
m</a>;<o:p></o:p></p><p class=3DMsoPlainText>&gt; Rajan Rao; <a href=3D"mai=
lto:IBryskin@advaoptical.com">IBryskin@advaoptical.com</a>; BELOTTI, SERGIO=
 (SERGIO); John E<o:p></o:p></p><p class=3DMsoPlainText>&gt; Drake<o:p></o:=
p></p><p class=3DMsoPlainText>&gt; Subject: <span lang=3DZH-CN style=3D'fon=
t-family:SimSun'>=B4=F0=B8=B4</span>: <span lang=3DZH-CN style=3D'font-fami=
ly:SimSun'>=B4=F0=B8=B4</span>: Updates on OTN signaling draft<o:p></o:p></=
p><p class=3DMsoPlainText>&gt; <o:p></o:p></p><p class=3DMsoPlainText>&gt; =
Hi Lou,<o:p></o:p></p><p class=3DMsoPlainText>&gt; <o:p></o:p></p><p class=
=3DMsoPlainText>&gt; Let me repeat the requirement of this information.<o:p=
></o:p></p><p class=3DMsoPlainText>&gt; When an ODU (e.g., ODU1) with one s=
pecific TSG (because of the ingress<o:p></o:p></p><p class=3DMsoPlainText>&=
gt; interface constraint) needs to be created over another higher ODU<o:p><=
/o:p></p><p class=3DMsoPlainText>&gt; (e.g., ODU3 FA-LSP), the penultimate =
hop of this ODU3 FA-LSP needs to<o:p></o:p></p><p class=3DMsoPlainText>&gt;=
 be aware of which TSG should be picked up from the TE link (ie., choose<o:=
p></o:p></p><p class=3DMsoPlainText>&gt; the right component link which can=
 support the client TSG), so the<o:p></o:p></p><p class=3DMsoPlainText>&gt;=
 client TSG information (and hierarchy information) needs to be conveyed<o:=
p></o:p></p><p class=3DMsoPlainText>&gt; in the signaling to create the ODU=
 FA-LSP.<o:p></o:p></p><p class=3DMsoPlainText>&gt; <o:p></o:p></p><p class=
=3DMsoPlainText>&gt; The requirement has been discussed in the previous IET=
F meetings,<o:p></o:p></p><p class=3DMsoPlainText>&gt; please get more info=
rmation from the presentation slides of Taipei and<o:p></o:p></p><p class=
=3DMsoPlainText>&gt; Paris meetings.<o:p></o:p></p><p class=3DMsoPlainText>=
&gt; <o:p></o:p></p><p class=3DMsoPlainText>&gt; Given that people understa=
nd the above requirment, let's focus on the<o:p></o:p></p><p class=3DMsoPla=
inText>&gt; potential solutions. In Taipei meeting, the authors compared th=
ree<o:p></o:p></p><p class=3DMsoPlainText>&gt; alternatives and discussed i=
n the list:<o:p></o:p></p><p class=3DMsoPlainText>&gt; (1) Introducing a ne=
w object: WG prefer to re-use the existing things,<o:p></o:p></p><p class=
=3DMsoPlainText>&gt; so the authors switched to (2).<o:p></o:p></p><p class=
=3DMsoPlainText>&gt; (2) Extending GPID to carry TSG/PT information: Lou on=
ce suggested this<o:p></o:p></p><p class=3DMsoPlainText>&gt; approach and t=
he authors finally agreed on this because it is needed<o:p></o:p></p><p cla=
ss=3DMsoPlainText>&gt; only for penultimate hop to select right link to egr=
ess. Note that TSG<o:p></o:p></p><p class=3DMsoPlainText>&gt; isn't needed =
for loose ERO expansion.<o:p></o:p></p><p class=3DMsoPlainText>&gt; (3) Ext=
ending Encoding Type: Encoding type is an end to end constraint<o:p></o:p><=
/p><p class=3DMsoPlainText>&gt; (See RFC4328), so the authors think it is n=
ot the right place.<o:p></o:p></p><p class=3DMsoPlainText>&gt; <o:p></o:p><=
/p><p class=3DMsoPlainText>&gt; Do we need to poll how many people support =
which approach perspectively<o:p></o:p></p><p class=3DMsoPlainText>&gt; (or=
 any other approach)?<o:p></o:p></p><p class=3DMsoPlainText>&gt; <o:p></o:p=
></p><p class=3DMsoPlainText>&gt; <o:p></o:p></p><p class=3DMsoPlainText>&g=
t; <o:p></o:p></p><p class=3DMsoPlainText>&gt; Thanks<o:p></o:p></p><p clas=
s=3DMsoPlainText>&gt; <o:p></o:p></p><p class=3DMsoPlainText>&gt; Fatai<o:p=
></o:p></p><p class=3DMsoPlainText>&gt; <o:p></o:p></p><p class=3DMsoPlainT=
ext>&gt; <o:p></o:p></p><p class=3DMsoPlainText>&gt; -----<span lang=3DZH-C=
N style=3D'font-family:SimSun'>=D3=CA=BC=FE=D4=AD=BC=FE</span>-----<o:p></o=
:p></p><p class=3DMsoPlainText>&gt; <span lang=3DZH-CN style=3D'font-family=
:SimSun'>=B7=A2=BC=FE=C8=CB</span>: Lou Berger [<a href=3D"mailto:lberger@l=
abn.net">mailto:lberger@labn.net</a>]<o:p></o:p></p><p class=3DMsoPlainText=
>&gt; <span lang=3DZH-CN style=3D'font-family:SimSun'>=B7=A2=CB=CD=CA=B1=BC=
=E4</span>: 2012<span lang=3DZH-CN style=3D'font-family:SimSun'>=C4=EA</spa=
n>7<span lang=3DZH-CN style=3D'font-family:SimSun'>=D4=C2</span>10<span lan=
g=3DZH-CN style=3D'font-family:SimSun'>=C8=D5</span> 22:33<o:p></o:p></p><p=
 class=3DMsoPlainText>&gt; <span lang=3DZH-CN style=3D'font-family:SimSun'>=
=CA=D5=BC=FE=C8=CB</span>: Fatai Zhang<o:p></o:p></p><p class=3DMsoPlainTex=
t>&gt; <span lang=3DZH-CN style=3D'font-family:SimSun'>=B3=AD=CB=CD</span>:=
 <a href=3D"mailto:ccamp@ietf.org">ccamp@ietf.org</a>; Khuzema Pithewan; <a=
 href=3D"mailto:zhangguoying@mail.ritt.com.cn">zhangguoying@mail.ritt.com.c=
n</a>;<o:p></o:p></p><p class=3DMsoPlainText>&gt; <a href=3D"mailto:daniele=
.ceccarelli@ericsson.com">daniele.ceccarelli@ericsson.com</a>; Linyi; <a hr=
ef=3D"mailto:xuyunbin@mail.ritt.com.cn">xuyunbin@mail.ritt.com.cn</a>;<o:p>=
</o:p></p><p class=3DMsoPlainText>&gt; GRANDI, PIETRO VITTORIO (PIETRO VITT=
ORIO); <a href=3D"mailto:diego.caviglia@ericsson.com">diego.caviglia@ericss=
on.com</a>;<o:p></o:p></p><p class=3DMsoPlainText>&gt; Rajan Rao; <a href=
=3D"mailto:IBryskin@advaoptical.com">IBryskin@advaoptical.com</a>; BELOTTI,=
 SERGIO (SERGIO); John E<o:p></o:p></p><p class=3DMsoPlainText>&gt; Drake<o=
:p></o:p></p><p class=3DMsoPlainText>&gt; <span lang=3DZH-CN style=3D'font-=
family:SimSun'>=D6=F7=CC=E2</span>: Re: <span lang=3DZH-CN style=3D'font-fa=
mily:SimSun'>=B4=F0=B8=B4</span>: Updates on OTN signaling draft<o:p></o:p>=
</p><p class=3DMsoPlainText>&gt; <o:p></o:p></p><p class=3DMsoPlainText>&gt=
; Fatai,<o:p></o:p></p><p class=3DMsoPlainText>&gt; <o:p></o:p></p><p class=
=3DMsoPlainText>&gt; See below for in-line responses.<o:p></o:p></p><p clas=
s=3DMsoPlainText>&gt; <o:p></o:p></p><p class=3DMsoPlainText>&gt; On 7/10/2=
012 5:34 AM, Fatai Zhang wrote:<o:p></o:p></p><p class=3DMsoPlainText>&gt; =
&gt;<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;<o:p></o:p></p><p class=
=3DMsoPlainText>&gt; &gt; Hi Lou,<o:p></o:p></p><p class=3DMsoPlainText>&gt=
; &gt;<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;<o:p></o:p></p><p cla=
ss=3DMsoPlainText>&gt; &gt;<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;=
 Please see in-line below.<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt; =
&gt;<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;<o:p></o:p></p><p class=
=3DMsoPlainText>&gt; &gt; Note that let<span style=3D'font-family:"Courier =
New"'>=A1=AF</span>s use HTML format to make the mails readable, J<o:p></o:=
p></p><p class=3DMsoPlainText>&gt; &gt;<o:p></o:p></p><p class=3DMsoPlainTe=
xt>&gt; &gt;<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;<o:p></o:p></p>=
<p class=3DMsoPlainText>&gt; &gt; Thanks<o:p></o:p></p><p class=3DMsoPlainT=
ext>&gt; &gt;<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;<o:p></o:p></p=
><p class=3DMsoPlainText>&gt; &gt;<o:p></o:p></p><p class=3DMsoPlainText>&g=
t; &gt; Fatai<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;<o:p></o:p></p=
><p class=3DMsoPlainText>&gt; &gt;<o:p></o:p></p><p class=3DMsoPlainText>&g=
t; &gt;<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;<o:p></o:p></p><p cl=
ass=3DMsoPlainText>&gt; &gt;<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt=
; -----<span lang=3DZH-CN style=3D'font-family:SimSun'>=D3=CA=BC=FE=D4=AD=
=BC=FE</span>-----<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt; <span la=
ng=3DZH-CN style=3D'font-family:SimSun'>=B7=A2=BC=FE=C8=CB</span>: Lou Berg=
er [<a href=3D"mailto:lberger@labn.net">mailto:lberger@labn.net</a>]<o:p></=
o:p></p><p class=3DMsoPlainText>&gt; &gt; <span lang=3DZH-CN style=3D'font-=
family:SimSun'>=B7=A2=CB=CD=CA=B1=BC=E4</span>: 2012<span lang=3DZH-CN styl=
e=3D'font-family:SimSun'>=C4=EA</span>7<span lang=3DZH-CN style=3D'font-fam=
ily:SimSun'>=D4=C2</span>10<span lang=3DZH-CN style=3D'font-family:SimSun'>=
=C8=D5</span> 5:27<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt; <span la=
ng=3DZH-CN style=3D'font-family:SimSun'>=CA=D5=BC=FE=C8=CB</span>: Fatai Zh=
ang<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt; <span lang=3DZH-CN styl=
e=3D'font-family:SimSun'>=B3=AD=CB=CD</span>: <a href=3D"mailto:ccamp@ietf.=
org">ccamp@ietf.org</a>; Khuzema Pithewan;<o:p></o:p></p><p class=3DMsoPlai=
nText>&gt; <a href=3D"mailto:zhangguoying@mail.ritt.com.cn">zhangguoying@ma=
il.ritt.com.cn</a>;<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt; <a href=
=3D"mailto:daniele.ceccarelli@ericsson.com">daniele.ceccarelli@ericsson.com=
</a>; Linyi; <a href=3D"mailto:xuyunbin@mail.ritt.com.cn">xuyunbin@mail.rit=
t.com.cn</a>;<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt; GRANDI, PIETR=
O VITTORIO (PIETRO VITTORIO);<o:p></o:p></p><p class=3DMsoPlainText>&gt; &g=
t; <a href=3D"mailto:diego.caviglia@ericsson.com">diego.caviglia@ericsson.c=
om</a>; Rajan Rao; <a href=3D"mailto:IBryskin@advaoptical.com">IBryskin@adv=
aoptical.com</a>;<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt; BELOTTI, =
SERGIO (SERGIO); John E Drake<o:p></o:p></p><p class=3DMsoPlainText>&gt; &g=
t; <span lang=3DZH-CN style=3D'font-family:SimSun'>=D6=F7=CC=E2</span>: Re:=
 Updates on OTN signaling draft<o:p></o:p></p><p class=3DMsoPlainText>&gt; =
&gt;<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;<o:p></o:p></p><p class=
=3DMsoPlainText>&gt; &gt;<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt; [=
Woops, this was stuck in my outbox from last week!]<o:p></o:p></p><p class=
=3DMsoPlainText>&gt; &gt;<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;<o=
:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;<o:p></o:p></p><p class=3DMso=
PlainText>&gt; &gt; Fatai/Authors,<o:p></o:p></p><p class=3DMsoPlainText>&g=
t; &gt;<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; G-PID is a fine place to carry informati=
on about the<o:p></o:p></p><p class=3DMsoPlainText>&gt; format/type of info=
rmation carried by an LSP. An important<o:p></o:p></p><p class=3DMsoPlainTe=
xt>&gt; consideration is that G-PID information is not used as part of path=
<o:p></o:p></p><p class=3DMsoPlainText>&gt; computation, and is not used by=
 transit nodes except in the case of the<o:p></o:p></p><p class=3DMsoPlainT=
ext>&gt; penultimate hop (for PHP).<o:p></o:p></p><p class=3DMsoPlainText>&=
gt; &gt;<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt; When we last discu=
ssed this, some authors stated that TSG was needed<o:p></o:p></p><p class=
=3DMsoPlainText>&gt; as part of path computation, including at transit node=
s doing loose ERO<o:p></o:p></p><p class=3DMsoPlainText>&gt; expansion.&nbs=
p; Hence the discussed inclusion of TSG in LSP Encoding Type.<o:p></o:p></p=
><p class=3DMsoPlainText>&gt; &gt;<o:p></o:p></p><p class=3DMsoPlainText>&g=
t; &gt; If the authors are now willing to state that TSG isn't needed for<o=
:p></o:p></p><p class=3DMsoPlainText>&gt; loose ERO expansion, then G-PID s=
eems the perfect choice.<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;<o:=
p></o:p></p><p class=3DMsoPlainText>&gt; &gt; Do all the authors agree with=
 such this statement (and change)?<o:p></o:p></p><p class=3DMsoPlainText>&g=
t; <o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt; [Authors] After lots of=
 discussion, the authors came to conclude that<o:p></o:p></p><p class=3DMso=
PlainText>&gt; it is needed only for penultimate hop to select right link t=
o egress<o:p></o:p></p><p class=3DMsoPlainText>&gt; and hence the change.<o=
:p></o:p></p><p class=3DMsoPlainText>&gt; <o:p></o:p></p><p class=3DMsoPlai=
nText>&gt; Can one of the authors summarize the discussion for the WG?<o:p>=
</o:p></p><p class=3DMsoPlainText>&gt; <o:p></o:p></p><p class=3DMsoPlainTe=
xt>&gt; The authors are asking for WG support, so should provide the techni=
cal<o:p></o:p></p><p class=3DMsoPlainText>&gt; basis for the position. Once=
 the requirements are articulated, the WG<o:p></o:p></p><p class=3DMsoPlain=
Text>&gt; can be in a position to judge/agree/disagree with the proposed<o:=
p></o:p></p><p class=3DMsoPlainText>&gt; solution.<o:p></o:p></p><p class=
=3DMsoPlainText>&gt; <o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;<o:p><=
/o:p></p><p class=3DMsoPlainText>&gt; &gt; As I mentioned on the on the con=
ference call, and my mail of 6/18,<o:p></o:p></p><p class=3DMsoPlainText>&g=
t; the use of G-PID as part of a path selection is really part of the<o:p><=
/o:p></p><p class=3DMsoPlainText>&gt; general issue seen in MLN. On the cal=
l we agreed that non-OTN MLN will<o:p></o:p></p><p class=3DMsoPlainText>&gt=
; be handled as the standard MLN case, without OTN-specific additions.<o:p>=
</o:p></p><p class=3DMsoPlainText>&gt; &gt;<o:p></o:p></p><p class=3DMsoPla=
inText>&gt; &gt; Unless I'm misreading your mail, you are *not* proposing t=
o treat the<o:p></o:p></p><p class=3DMsoPlainText>&gt; intra-OTN (hierarchy=
) case as generic MLN but rather a special case by<o:p></o:p></p><p class=
=3DMsoPlainText>&gt; bundling some upper OTN hierarchy information as part =
of a lower H-LSPs<o:p></o:p></p><p class=3DMsoPlainText>&gt; (in Hierarchy =
TLV).<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;<o:p></o:p></p><p clas=
s=3DMsoPlainText>&gt; &gt; Correct?<o:p></o:p></p><p class=3DMsoPlainText>&=
gt; &gt;<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt; [Authors] Correct,=
 it is the latter one.<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;<o:p>=
</o:p></p><p class=3DMsoPlainText>&gt; &gt; If my reading is correct, then =
I think the authors need to discuss<o:p></o:p></p><p class=3DMsoPlainText>&=
gt; their technical reasons for their &quot;preference&quot; and why the pr=
eviously<o:p></o:p></p><p class=3DMsoPlainText>&gt; reached compromise posi=
tion (as articulated in my mail of 6/18) is not<o:p></o:p></p><p class=3DMs=
oPlainText>&gt; acceptable.<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;=
<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt; [Authors] After checking a=
fter conf call, the authors think that<o:p></o:p></p><p class=3DMsoPlainTex=
t>&gt; Encoding type is an end to end constraint (See RFC4328) and GPID sho=
uld<o:p></o:p></p><p class=3DMsoPlainText>&gt; be the right place as you me=
ntion above.<o:p></o:p></p><p class=3DMsoPlainText>&gt; <o:p></o:p></p><p c=
lass=3DMsoPlainText>&gt; This goes to requirements, in today's GMPLS G-PID =
is not part of path<o:p></o:p></p><p class=3DMsoPlainText>&gt; computation =
except in the context of MRN/MLN.<o:p></o:p></p><p class=3DMsoPlainText>&gt=
; <o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;<o:p></o:p></p><p class=
=3DMsoPlainText>&gt; &gt; Speaking only as an individual contributor, given=
 the difficulty in<o:p></o:p></p><p class=3DMsoPlainText>&gt; reaching a co=
nsensus on how to treat intra-OTN (hierarchy) as a special<o:p></o:p></p><p=
 class=3DMsoPlainText>&gt; case, I personally now prefer to avoid any techn=
ology specific co-<o:p></o:p></p><p class=3DMsoPlainText>&gt; mingling of l=
ayers and to address the intra-OTN (hierarchy) case via<o:p></o:p></p><p cl=
ass=3DMsoPlainText>&gt; generic MLN (or other generic mechanisms).&nbsp; I =
think this position would<o:p></o:p></p><p class=3DMsoPlainText>&gt; transl=
ate to removing the Hierarchy TLV from the OTN signaling draft<o:p></o:p></=
p><p class=3DMsoPlainText>&gt; and spinning up a new draft to cover (OTN an=
d generic) intra-technology<o:p></o:p></p><p class=3DMsoPlainText>&gt; MLN.=
<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;<o:p></o:p></p><p class=3DM=
soPlainText>&gt; &gt; [Authors] The authors would like to focus on OTN spec=
ific by removing<o:p></o:p></p><p class=3DMsoPlainText>&gt; Encoding type a=
nd Switching type in the Hierarchy TLV(but keeping<o:p></o:p></p><p class=
=3DMsoPlainText>&gt; Signal Type). It is OK to have a new draft to cover ge=
neric intra-<o:p></o:p></p><p class=3DMsoPlainText>&gt; technology MLN.<o:p=
></o:p></p><p class=3DMsoPlainText>&gt; <o:p></o:p></p><p class=3DMsoPlainT=
ext>&gt; How is the revised TLV to be used?&nbsp; Do the authors have a spe=
cific<o:p></o:p></p><p class=3DMsoPlainText>&gt; proposal that covers &quot=
;generic intra-technology MLN&quot;?<o:p></o:p></p><p class=3DMsoPlainText>=
&gt; <o:p></o:p></p><p class=3DMsoPlainText>&gt; Lou<o:p></o:p></p><p class=
=3DMsoPlainText>&gt; <o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;<o:p><=
/o:p></p><p class=3DMsoPlainText>&gt; &gt;<o:p></o:p></p><p class=3DMsoPlai=
nText>&gt; &gt; Lou<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;<o:p></o=
:p></p><p class=3DMsoPlainText>&gt; &gt;<o:p></o:p></p><p class=3DMsoPlainT=
ext>&gt; &gt;<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt; On 7/5/2012 9=
:25 PM, Fatai Zhang wrote:<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;<=
o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;&gt;<o:p></o:p></p><p class=
=3DMsoPlainText>&gt; &gt;<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;&g=
t; Hi all,<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;<o:p></o:p></p><p=
 class=3DMsoPlainText>&gt; &gt;&gt;<o:p></o:p></p><p class=3DMsoPlainText>&=
gt; &gt;<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;&gt; We are updatin=
g OTN signaling draft. Since we had lots of discussion<o:p></o:p></p><p cla=
ss=3DMsoPlainText>&gt; &gt;&gt; on<o:p></o:p></p><p class=3DMsoPlainText>&g=
t; &gt; the TSG stuff in the list, let's converge on the solution.<o:p></o:=
p></p><p class=3DMsoPlainText>&gt; &gt;<o:p></o:p></p><p class=3DMsoPlainTe=
xt>&gt; &gt;&gt;<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;<o:p></o:p>=
</p><p class=3DMsoPlainText>&gt; &gt;&gt; Based on the previous discussion =
between Lou and co-authors, the<o:p></o:p></p><p class=3DMsoPlainText>&gt; =
&gt; authors prefer the following changes:<o:p></o:p></p><p class=3DMsoPlai=
nText>&gt; &gt;<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;&gt;<o:p></o=
:p></p><p class=3DMsoPlainText>&gt; &gt;<o:p></o:p></p><p class=3DMsoPlainT=
ext>&gt; &gt;&gt; (1) Extending GPID to carry TSG in signaling, since its p=
urpose in<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt; signaling is to e=
nsure that endpoints of the LSP being signaled have<o:p></o:p></p><p class=
=3DMsoPlainText>&gt; a<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt; cons=
istent view of the TSG to be offered to its clients and LSP<o:p></o:p></p><=
p class=3DMsoPlainText>&gt; &gt; endpoint consistency is the purpose for wh=
ich the GPID was designed.<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;<=
o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;&gt;<o:p></o:p></p><p class=
=3DMsoPlainText>&gt; &gt;<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;&g=
t; (2)Extending LSPA to carry hierarchy information (ie., Type=3D2<o:p></o:=
p></p><p class=3DMsoPlainText>&gt; &gt;&gt; Hierarchy<o:p></o:p></p><p clas=
s=3DMsoPlainText>&gt; &gt; TLV).<o:p></o:p></p><p class=3DMsoPlainText>&gt;=
 &gt;<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;&gt;<o:p></o:p></p><p =
class=3DMsoPlainText>&gt; &gt;<o:p></o:p></p><p class=3DMsoPlainText>&gt; &=
gt;&gt; Any comments?<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;<o:p><=
/o:p></p><p class=3DMsoPlainText>&gt; &gt;&gt;<o:p></o:p></p><p class=3DMso=
PlainText>&gt; &gt;<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;&gt; Tha=
nks<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;<o:p></o:p></p><p class=
=3DMsoPlainText>&gt; &gt;&gt;<o:p></o:p></p><p class=3DMsoPlainText>&gt; &g=
t;<o:p></o:p></p><p class=3DMsoPlainText>&gt; &gt;&gt; Fatai<o:p></o:p></p>=
<p class=3DMsoPlainText>&gt; &gt;<o:p></o:p></p></div></div></body></html>=

--_000_5E893DB832F57341992548CDBB333163A5A83D81DEEMBX01HQjnprn_--

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A New Internet-Draft is available from the on-line Internet-Drafts director=
ies.
 This draft is a work item of the Common Control and Measurement Plane Work=
ing Group of the IETF.

	Title           : Generalized Multi-Protocol Label Switching (GMPLS) Signa=
ling Extensions for the evolving G.709 Optical Transport Networks Control
	Author(s)       : Fatai Zhang
                          Guoying Zhang
                          Sergio Belotti
                          Daniele Ceccarelli
                          Khuzema Pithewan
	Filename        : draft-ietf-ccamp-gmpls-signaling-g709v3-03.txt
	Pages           : 30
	Date            : 2012-07-12

Abstract:
   Recent progress in ITU-T Recommendation G.709 standardization has
   introduced new ODU containers (ODU0, ODU4, ODU2e and ODUflex) and
   enhanced Optical Transport Networking (OTN) flexibility. Several
   recent documents have proposed ways to modify GMPLS signaling
   protocols to support these new OTN features.

   It is important that a single solution is developed for use in GMPLS
   signaling and routing protocols. This solution must support ODUk
   multiplexing capabilities, address all of the new features, be
   acceptable to all equipment vendors, and be extensible considering
   continued OTN evolution.

   This document describes the extensions to the Generalized Multi-
   Protocol Label Switching (GMPLS) signaling to control the evolving
   Optical Transport Networks (OTN) addressing ODUk multiplexing and new
   features including ODU0, ODU4, ODU2e and ODUflex.





The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-ccamp-gmpls-signaling-g709v3

There's also a htmlized version available at:
http://tools.ietf.org/html/draft-ietf-ccamp-gmpls-signaling-g709v3-03

A diff from previous version is available at:
http://tools.ietf.org/rfcdiff?url2=3Ddraft-ietf-ccamp-gmpls-signaling-g709v=
3-03


Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/


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From: Fatai Zhang <zhangfatai@huawei.com>
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From: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>
To: Fatai Zhang <zhangfatai@huawei.com>, Lou Berger <lberger@labn.net>
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Daniele,

On 7/13/2012 8:37 AM, Daniele Ceccarelli wrote:
> Hi all,
> 
>  bundling is not a problem IMHO, as the OTN ID already states that:
> 
> "  A single ISCD MAY be used for the advertisement of unbundled or
>    bundled links supporting homogeneous multiplexing hierarchies and the
>    same Tributary Slot Granularity (TSG).  A different ISCD MUST be used
>    for each different muxing hierarchy (muxing tree in the following
>    examples) and different TSG supported within the TE Link, if it
>    includes component links with differing characteristics. "
> 

Thanks. Was just about to point to my comment saying the same in mail to
the list on 10/4/11.

> A penultimate node (being it the last hop of the path or the first node of an H-LSP teminating on the same egress node of the LSP) needs to know 2 things:
> 
> 1. what is "being carried"
> 2. what the link or the H-LSP towards the egress node can support/terminate
> 
> The problem is not 2, as it is perfectly know. What needs to be put is signaling is 1. in order to provide the node with the information required to choose the correct TE link/H-LSP among the ones whose 2. is perfectly known.
> 

So what do you believe is needed to support 1?

How does this differ than what is needed for generic MLN?

Thanks,
Lou

> Thanks
> Daniele
> 
>> -----Original Message-----
>> From: Fatai Zhang [mailto:zhangfatai@huawei.com]
>> Sent: venerd 13 luglio 2012 12.04
>> To: Lou Berger
>> Cc: John E Drake; ccamp@ietf.org; Khuzema Pithewan;
>> zhangguoying@mail.ritt.com.cn; Daniele Ceccarelli; Linyi;
>> xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO
>> VITTORIO); Diego Caviglia; Rajan Rao;
>> IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO); Fatai Zhang
>> Subject: : : : Updates on OTN signaling draft
>>
>> Hi Lou,
>>
>> For bundling link, it just shows the collection capability of
>> all the component links and it cannot differentiate which
>> component can support which capability.
>>
>> For example, a TE link with two component links ( one can
>> support A (e.g., TSG=1.25)  and another one can support B
>> (TSG=2.5G)), and then the TE link will claim that it can
>> support both A&B. When an LSP needs to pick up A of the TE
>> link, we have to indicate A in the signaling explicitly to
>> make the corresponding nodes to pick up the correct component
>> link with capability A.
>>
>> If no bunding, everything about the TE link (actually it only
>> has one component link) has been advertised, so the path
>> computation can make the correct choice (ERO can indicate the
>> correct TE link (ie., component link)).
>>
>> Does this make sense?
>>
>> Thanks
>>
>> Fatai
>>
>>
>> -----ʼԭ-----
>> : Lou Berger [mailto:lberger@labn.net]
>> ʱ: 2012712 22:31
>> ռ: Fatai Zhang
>> : John E Drake; ccamp@ietf.org; Khuzema Pithewan;
>> zhangguoying@mail.ritt.com.cn;
>> daniele.ceccarelli@ericsson.com; Linyi;
>> xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO
>> VITTORIO); diego.caviglia@ericsson.com; Rajan Rao;
>> IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO)
>> : Re: : : Updates on OTN signaling draft
>>
>> Fatai,
>>       I think I agree with John (as WG contributor).
>>
>> Why isn't the same issue present for non-bundled links when
>> ERO expansion takes place at any place other than the ingress node?
>>
>> How does this issue differ from any MLN H-LSP?
>>
>> Lou
>>
>> On 7/11/2012 11:54 PM, Fatai Zhang wrote:
>>>
>>>
>>> Hi John,
>>>
>>>
>>>
>>> I think TSG and hierarchy information really confused many people,
>>> which causes the same questions will come out again after we
>> explained
>>> many times, :-)
>>>
>>>
>>>
>>> The simple way is to remove link bundling (or bundle the homogeneous
>>> component links) in the routing, then all the issues disappear
>>> immediately ( i.e., no need TSG and hierarchy information at all),
>>> otherwise, it needs these two kinds of information in some cases.
>>>
>>>
>>>
>>> I really suspect the value of bundling in the GMPLS for TDM
>> or WSON. I
>>> think this is interesting point to be investigated, but it
>> seems that
>>> not too many people are interested, J
>>>
>>>
>>>
>>> Please see in-line below.
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> Thanks
>>>
>>>
>>>
>>> Fatai
>>>
>>>
>>>
>>>
>>>
>>> -----ʼԭ-----
>>> : John E Drake [mailto:jdrake@juniper.net]
>>> ʱ: 2012712 2:54
>>> ռ: Fatai Zhang; Lou Berger
>>> : ccamp@ietf.org; Khuzema Pithewan; zhangguoying@mail.ritt.com.cn;
>>> daniele.ceccarelli@ericsson.com; Linyi; xuyunbin@mail.ritt.com.cn;
>>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO);
>>> diego.caviglia@ericsson.com; Rajan Rao; IBryskin@advaoptical.com;
>>> BELOTTI, SERGIO (SERGIO)
>>> : RE: : Updates on OTN signaling draft
>>>
>>>
>>>
>>> Fatai,
>>>
>>>
>>>
>>> Is it not the case that *any* node, regardless of whether it is the
>>> ingress node, an intermediate node, or the penultimate node, that
>>> selects the interface for the egress LSP endpoint MUST ensure that
>>> that interface has a TSG that is compatible with the TSG of
>> interface
>>> for the ingress LSP endpoint?
>>>
>>>
>>>
>>> [Fatai] There are two cases for TSG issue. One is for ODU
>> service LSP
>>> (carrying non-ODU) creation, the second one is ODU FA-LSP
>> creation for
>>> carrying another lower ODU. For the first case, the TSG can be
>>> changeable segment by segment (link by link). For example, when an
>>> ODU1 (to carry non-ODU) is being created over ODU3 link, the
>> TSG could
>>> be different link by link. For the second case, this is what we are
>>> talking about with Lou; in this case, only end points and
>> penultimate
>>> node need to have the compatible TSG.
>>>
>>>
>>>
>>> Also, it occurs to me that hierarchy is not only unnecessary but
>>> counter-productive in signaling.  When one establishes an ODU3, for
>>> example, that ODU3 may be used to instantiate multiple
>> hierarchies, so
>>> one does not want to specify a particular hierarchy.
>>>
>>>
>>>
>>> If one is establishing this ODU3 in order to eventually establish an
>>> ODU0 LSP over an ODU2 LSP, then after the ODU3 is established, the
>>> ODU2 would be signaled within the ODU3.  Again, since the ODU2 might
>>> support multiple hierarchies, one does not want to specify a
>> particular hierarchy.
>>>
>>>
>>>
>>> Once the OUD2 is established, the ODU0 is signaled.  Since
>> it does not
>>> support any further hierarchy, none is specified.
>>>
>>>
>>>
>>> [Fatai] Hierarchy information is necessary when bundling
>> link is used.
>>> For your example, ODU0->ODU2->ODU3, when creating ODU2 FA-LSP over
>>> ODU3 links, ODU2 layer should be aware of that it should pick up the
>>> right component link that can support ODU0 muxing (so the hierarchy
>>> ODU0->ODU2 should be carried when creating ODU2 FA-LSP), otherwise,
>>> this arbitrary
>>> ODU2 could be only support ODU1->ODU2, then ODU0 cannot be carried
>>> over this ODU2 FA-LSP.
>>>
>>>
>>>
>>> Thanks,
>>>
>>>
>>>
>>> John
>>>
>>>
>>>
>>> Sent from my iPhone
>>>
>>>
>>>
>>>> -----Original Message-----
>>>
>>>> From: Fatai Zhang [mailto:zhangfatai@huawei.com]
>>>
>>>> Sent: Tuesday, July 10, 2012 11:25 PM
>>>
>>>> To: Lou Berger
>>>
>>>> Cc: ccamp@ietf.org; Khuzema Pithewan; zhangguoying@mail.ritt.com.cn;
>>>
>>>> daniele.ceccarelli@ericsson.com; Linyi; xuyunbin@mail.ritt.com.cn;
>>>
>>>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO);
>>>> diego.caviglia@ericsson.com;
>>>
>>>> Rajan Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO
>> (SERGIO); John E
>>>
>>>> Drake
>>>
>>>> Subject: : : Updates on OTN signaling draft
>>>
>>>>
>>>
>>>> Hi Lou,
>>>
>>>>
>>>
>>>> Let me repeat the requirement of this information.
>>>
>>>> When an ODU (e.g., ODU1) with one specific TSG (because of the
>>>> ingress
>>>
>>>> interface constraint) needs to be created over another higher ODU
>>>
>>>> (e.g., ODU3 FA-LSP), the penultimate hop of this ODU3
>> FA-LSP needs to
>>>
>>>> be aware of which TSG should be picked up from the TE link (ie.,
>>>> choose
>>>
>>>> the right component link which can support the client TSG), so the
>>>
>>>> client TSG information (and hierarchy information) needs to be
>>>> conveyed
>>>
>>>> in the signaling to create the ODU FA-LSP.
>>>
>>>>
>>>
>>>> The requirement has been discussed in the previous IETF meetings,
>>>
>>>> please get more information from the presentation slides of Taipei
>>>> and
>>>
>>>> Paris meetings.
>>>
>>>>
>>>
>>>> Given that people understand the above requirment, let's
>> focus on the
>>>
>>>> potential solutions. In Taipei meeting, the authors compared three
>>>
>>>> alternatives and discussed in the list:
>>>
>>>> (1) Introducing a new object: WG prefer to re-use the existing
>>>> things,
>>>
>>>> so the authors switched to (2).
>>>
>>>> (2) Extending GPID to carry TSG/PT information: Lou once suggested
>>>> this
>>>
>>>> approach and the authors finally agreed on this because it is needed
>>>
>>>> only for penultimate hop to select right link to egress. Note that
>>>> TSG
>>>
>>>> isn't needed for loose ERO expansion.
>>>
>>>> (3) Extending Encoding Type: Encoding type is an end to end
>>>> constraint
>>>
>>>> (See RFC4328), so the authors think it is not the right place.
>>>
>>>>
>>>
>>>> Do we need to poll how many people support which approach
>>>> perspectively
>>>
>>>> (or any other approach)?
>>>
>>>>
>>>
>>>>
>>>
>>>>
>>>
>>>> Thanks
>>>
>>>>
>>>
>>>> Fatai
>>>
>>>>
>>>
>>>>
>>>
>>>> -----ʼԭ-----
>>>
>>>> : Lou Berger [mailto:lberger@labn.net]
>>>
>>>> ʱ: 2012710 22:33
>>>
>>>> ռ: Fatai Zhang
>>>
>>>> : ccamp@ietf.org; Khuzema Pithewan; zhangguoying@mail.ritt.com.cn;
>>>
>>>> daniele.ceccarelli@ericsson.com; Linyi; xuyunbin@mail.ritt.com.cn;
>>>
>>>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO);
>>>> diego.caviglia@ericsson.com;
>>>
>>>> Rajan Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO
>> (SERGIO); John E
>>>
>>>> Drake
>>>
>>>> : Re: : Updates on OTN signaling draft
>>>
>>>>
>>>
>>>> Fatai,
>>>
>>>>
>>>
>>>> See below for in-line responses.
>>>
>>>>
>>>
>>>> On 7/10/2012 5:34 AM, Fatai Zhang wrote:
>>>
>>>>>
>>>
>>>>>
>>>
>>>>> Hi Lou,
>>>
>>>>>
>>>
>>>>>
>>>
>>>>>
>>>
>>>>> Please see in-line below.
>>>
>>>>>>
>>>
>>>>>
>>>
>>>>> Note that lets use HTML format to make the mails readable, J
>>>
>>>>>
>>>
>>>>>
>>>
>>>>>
>>>
>>>>> Thanks
>>>
>>>>>
>>>
>>>>>
>>>
>>>>>
>>>
>>>>> Fatai
>>>
>>>>>
>>>
>>>>>
>>>
>>>>>
>>>
>>>>>
>>>
>>>>>
>>>
>>>>> -----ʼԭ-----
>>>
>>>>> : Lou Berger [mailto:lberger@labn.net]
>>>
>>>>> ʱ: 2012710 5:27
>>>
>>>>> ռ: Fatai Zhang
>>>
>>>>> : ccamp@ietf.org; Khuzema Pithewan;
>>>
>>>> zhangguoying@mail.ritt.com.cn;
>>>
>>>>> daniele.ceccarelli@ericsson.com; Linyi; xuyunbin@mail.ritt.com.cn;
>>>
>>>>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO);
>>>
>>>>> diego.caviglia@ericsson.com; Rajan Rao; IBryskin@advaoptical.com;
>>>
>>>>> BELOTTI, SERGIO (SERGIO); John E Drake
>>>
>>>>> : Re: Updates on OTN signaling draft
>>>
>>>>>
>>>
>>>>>
>>>
>>>>>
>>>
>>>>> [Woops, this was stuck in my outbox from last week!]
>>>
>>>>>
>>>
>>>>>
>>>
>>>>>
>>>
>>>>> Fatai/Authors,
>>>
>>>>>
>>>
>>>>>          G-PID is a fine place to carry information about the
>>>
>>>> format/type of information carried by an LSP. An important
>>>
>>>> consideration is that G-PID information is not used as part of path
>>>
>>>> computation, and is not used by transit nodes except in the case of
>>>> the
>>>
>>>> penultimate hop (for PHP).
>>>
>>>>>
>>>
>>>>> When we last discussed this, some authors stated that TSG was
>>>>> needed
>>>
>>>> as part of path computation, including at transit nodes doing loose
>>>> ERO
>>>
>>>> expansion.  Hence the discussed inclusion of TSG in LSP
>> Encoding Type.
>>>
>>>>>
>>>
>>>>> If the authors are now willing to state that TSG isn't needed for
>>>
>>>> loose ERO expansion, then G-PID seems the perfect choice.
>>>
>>>>>
>>>
>>>>> Do all the authors agree with such this statement (and change)?
>>>
>>>>
>>>
>>>>> [Authors] After lots of discussion, the authors came to conclude
>>>>> that
>>>
>>>> it is needed only for penultimate hop to select right link to egress
>>>
>>>> and hence the change.
>>>
>>>>
>>>
>>>> Can one of the authors summarize the discussion for the WG?
>>>
>>>>
>>>
>>>> The authors are asking for WG support, so should provide the
>>>> technical
>>>
>>>> basis for the position. Once the requirements are
>> articulated, the WG
>>>
>>>> can be in a position to judge/agree/disagree with the proposed
>>>
>>>> solution.
>>>
>>>>
>>>
>>>>>
>>>
>>>>> As I mentioned on the on the conference call, and my mail of 6/18,
>>>
>>>> the use of G-PID as part of a path selection is really part of the
>>>
>>>> general issue seen in MLN. On the call we agreed that non-OTN MLN
>>>> will
>>>
>>>> be handled as the standard MLN case, without OTN-specific additions.
>>>
>>>>>
>>>
>>>>> Unless I'm misreading your mail, you are *not* proposing to treat
>>>>> the
>>>
>>>> intra-OTN (hierarchy) case as generic MLN but rather a special case
>>>> by
>>>
>>>> bundling some upper OTN hierarchy information as part of a lower
>>>> H-LSPs
>>>
>>>> (in Hierarchy TLV).
>>>
>>>>>
>>>
>>>>> Correct?
>>>
>>>>>
>>>
>>>>> [Authors] Correct, it is the latter one.
>>>
>>>>>
>>>
>>>>> If my reading is correct, then I think the authors need to discuss
>>>
>>>> their technical reasons for their "preference" and why the
>> previously
>>>
>>>> reached compromise position (as articulated in my mail of 6/18) is
>>>> not
>>>
>>>> acceptable.
>>>
>>>>>
>>>
>>>>> [Authors] After checking after conf call, the authors think that
>>>
>>>> Encoding type is an end to end constraint (See RFC4328) and GPID
>>>> should
>>>
>>>> be the right place as you mention above.
>>>
>>>>
>>>
>>>> This goes to requirements, in today's GMPLS G-PID is not
>> part of path
>>>
>>>> computation except in the context of MRN/MLN.
>>>
>>>>
>>>
>>>>>
>>>
>>>>> Speaking only as an individual contributor, given the
>> difficulty in
>>>
>>>> reaching a consensus on how to treat intra-OTN (hierarchy) as a
>>>> special
>>>
>>>> case, I personally now prefer to avoid any technology specific co-
>>>
>>>> mingling of layers and to address the intra-OTN (hierarchy) case via
>>>
>>>> generic MLN (or other generic mechanisms).  I think this position
>>>> would
>>>
>>>> translate to removing the Hierarchy TLV from the OTN signaling draft
>>>
>>>> and spinning up a new draft to cover (OTN and generic)
>>>> intra-technology
>>>
>>>> MLN.
>>>
>>>>>
>>>
>>>>> [Authors] The authors would like to focus on OTN specific by
>>>>> removing
>>>
>>>> Encoding type and Switching type in the Hierarchy TLV(but keeping
>>>
>>>> Signal Type). It is OK to have a new draft to cover generic intra-
>>>
>>>> technology MLN.
>>>
>>>>
>>>
>>>> How is the revised TLV to be used?  Do the authors have a specific
>>>
>>>> proposal that covers "generic intra-technology MLN"?
>>>
>>>>
>>>
>>>> Lou
>>>
>>>>
>>>
>>>>>
>>>
>>>>>
>>>
>>>>> Lou
>>>
>>>>>
>>>
>>>>>
>>>
>>>>>
>>>
>>>>> On 7/5/2012 9:25 PM, Fatai Zhang wrote:
>>>
>>>>>
>>>
>>>>>>
>>>
>>>>>
>>>
>>>>>> Hi all,
>>>
>>>>>
>>>
>>>>>>
>>>
>>>>>
>>>
>>>>>> We are updating OTN signaling draft. Since we had lots of
>>>>>> discussion
>>>
>>>>>> on
>>>
>>>>> the TSG stuff in the list, let's converge on the solution.
>>>
>>>>>
>>>
>>>>>>
>>>
>>>>>
>>>
>>>>>> Based on the previous discussion between Lou and co-authors, the
>>>
>>>>> authors prefer the following changes:
>>>
>>>>>
>>>
>>>>>>
>>>
>>>>>
>>>
>>>>>> (1) Extending GPID to carry TSG in signaling, since its
>> purpose in
>>>
>>>>> signaling is to ensure that endpoints of the LSP being signaled
>>>>> have
>>>
>>>> a
>>>
>>>>> consistent view of the TSG to be offered to its clients and LSP
>>>
>>>>> endpoint consistency is the purpose for which the GPID
>> was designed.
>>>
>>>>>
>>>
>>>>>>
>>>
>>>>>
>>>
>>>>>> (2)Extending LSPA to carry hierarchy information (ie., Type=2
>>>
>>>>>> Hierarchy
>>>
>>>>> TLV).
>>>
>>>>>
>>>
>>>>>>
>>>
>>>>>
>>>
>>>>>> Any comments?
>>>
>>>>>
>>>
>>>>>>
>>>
>>>>>
>>>
>>>>>> Thanks
>>>
>>>>>
>>>
>>>>>>
>>>
>>>>>
>>>
>>>>>> Fatai
>>>
>>>>>
>>>
>>

From daniele.ceccarelli@ericsson.com  Fri Jul 13 06:03:28 2012
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From: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>
To: Lou Berger <lberger@labn.net>
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Daniele,


On 7/13/2012 9:04 AM, Daniele Ceccarelli wrote:
> Lou,
> 
> [...]
>>
>> So what do you believe is needed to support 1?
>>
>> How does this differ than what is needed for generic MLN?
>>
>> Thanks,
>> Lou
>>
> 
> What is needed in OTN is:
> A) TSG

And this is covered in the current (MRN/MLN-aligned) proposal via G-PID,
right?

> B) Hierarchy (i must be honest, i should re-think about it because i don't remember why it is needed but i'm sure we came to the conclusion it is need)
> 

Given the current discussion (including John's comments) it would be
good to understand what purpose this serves and how it differs from what
is needed to satisfy your next point.


> What is needed in MLN is also:
> C) adaptation information (not needed in intra-OTN as there is a 1:1 relationship for any mapping)

Presumably this is the focus of
draft-bcg-ccamp-gmpls-ml-implications-00, right?

Thanks,
Lou
> 
> Thanks
> Daniele
> 
> 
> 
>>>> -----Original Message-----
>>>> From: Fatai Zhang [mailto:zhangfatai@huawei.com]
>>>> Sent: venerd 13 luglio 2012 12.04
>>>> To: Lou Berger
>>>> Cc: John E Drake; ccamp@ietf.org; Khuzema Pithewan;
>>>> zhangguoying@mail.ritt.com.cn; Daniele Ceccarelli; Linyi;
>>>> xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO
>> VITTORIO);
>>>> Diego Caviglia; Rajan Rao; IBryskin@advaoptical.com;
>> BELOTTI, SERGIO
>>>> (SERGIO); Fatai Zhang
>>>> Subject: : : : Updates on OTN signaling draft
>>>>
>>>> Hi Lou,
>>>>
>>>> For bundling link, it just shows the collection capability
>> of all the
>>>> component links and it cannot differentiate which component can
>>>> support which capability.
>>>>
>>>> For example, a TE link with two component links ( one can support A
>>>> (e.g., TSG=1.25)  and another one can support B
>> (TSG=2.5G)), and then
>>>> the TE link will claim that it can support both A&B. When an LSP
>>>> needs to pick up A of the TE link, we have to indicate A in the
>>>> signaling explicitly to make the corresponding nodes to pick up the
>>>> correct component link with capability A.
>>>>
>>>> If no bunding, everything about the TE link (actually it
>> only has one
>>>> component link) has been advertised, so the path
>> computation can make
>>>> the correct choice (ERO can indicate the correct TE link (ie.,
>>>> component link)).
>>>>
>>>> Does this make sense?
>>>>
>>>> Thanks
>>>>
>>>> Fatai
>>>>
>>>>
>>>> -----ʼԭ-----
>>>> : Lou Berger [mailto:lberger@labn.net]
>>>> ʱ: 2012712 22:31
>>>> ռ: Fatai Zhang
>>>> : John E Drake; ccamp@ietf.org; Khuzema Pithewan;
>>>> zhangguoying@mail.ritt.com.cn; daniele.ceccarelli@ericsson.com;
>>>> Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO
>>>> VITTORIO); diego.caviglia@ericsson.com; Rajan Rao;
>>>> IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO)
>>>> : Re: : : Updates on OTN signaling draft
>>>>
>>>> Fatai,
>>>>       I think I agree with John (as WG contributor).
>>>>
>>>> Why isn't the same issue present for non-bundled links when ERO
>>>> expansion takes place at any place other than the ingress node?
>>>>
>>>> How does this issue differ from any MLN H-LSP?
>>>>
>>>> Lou
>>>>
>>>> On 7/11/2012 11:54 PM, Fatai Zhang wrote:
>>>>>
>>>>>
>>>>> Hi John,
>>>>>
>>>>>
>>>>>
>>>>> I think TSG and hierarchy information really confused many people,
>>>>> which causes the same questions will come out again after we
>>>> explained
>>>>> many times, :-)
>>>>>
>>>>>
>>>>>
>>>>> The simple way is to remove link bundling (or bundle the
>> homogeneous
>>>>> component links) in the routing, then all the issues disappear
>>>>> immediately ( i.e., no need TSG and hierarchy information at all),
>>>>> otherwise, it needs these two kinds of information in some cases.
>>>>>
>>>>>
>>>>>
>>>>> I really suspect the value of bundling in the GMPLS for TDM
>>>> or WSON. I
>>>>> think this is interesting point to be investigated, but it
>>>> seems that
>>>>> not too many people are interested, J
>>>>>
>>>>>
>>>>>
>>>>> Please see in-line below.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> Thanks
>>>>>
>>>>>
>>>>>
>>>>> Fatai
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> -----ʼԭ-----
>>>>> : John E Drake [mailto:jdrake@juniper.net]
>>>>> ʱ: 2012712 2:54
>>>>> ռ: Fatai Zhang; Lou Berger
>>>>> : ccamp@ietf.org; Khuzema Pithewan;
>> zhangguoying@mail.ritt.com.cn;
>>>>> daniele.ceccarelli@ericsson.com; Linyi; xuyunbin@mail.ritt.com.cn;
>>>>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO);
>>>>> diego.caviglia@ericsson.com; Rajan Rao; IBryskin@advaoptical.com;
>>>>> BELOTTI, SERGIO (SERGIO)
>>>>> : RE: : Updates on OTN signaling draft
>>>>>
>>>>>
>>>>>
>>>>> Fatai,
>>>>>
>>>>>
>>>>>
>>>>> Is it not the case that *any* node, regardless of whether
>> it is the
>>>>> ingress node, an intermediate node, or the penultimate node, that
>>>>> selects the interface for the egress LSP endpoint MUST ensure that
>>>>> that interface has a TSG that is compatible with the TSG of
>>>> interface
>>>>> for the ingress LSP endpoint?
>>>>>
>>>>>
>>>>>
>>>>> [Fatai] There are two cases for TSG issue. One is for ODU
>>>> service LSP
>>>>> (carrying non-ODU) creation, the second one is ODU FA-LSP
>>>> creation for
>>>>> carrying another lower ODU. For the first case, the TSG can be
>>>>> changeable segment by segment (link by link). For example, when an
>>>>> ODU1 (to carry non-ODU) is being created over ODU3 link, the
>>>> TSG could
>>>>> be different link by link. For the second case, this is
>> what we are
>>>>> talking about with Lou; in this case, only end points and
>>>> penultimate
>>>>> node need to have the compatible TSG.
>>>>>
>>>>>
>>>>>
>>>>> Also, it occurs to me that hierarchy is not only unnecessary but
>>>>> counter-productive in signaling.  When one establishes an
>> ODU3, for
>>>>> example, that ODU3 may be used to instantiate multiple
>>>> hierarchies, so
>>>>> one does not want to specify a particular hierarchy.
>>>>>
>>>>>
>>>>>
>>>>> If one is establishing this ODU3 in order to eventually
>> establish an
>>>>> ODU0 LSP over an ODU2 LSP, then after the ODU3 is established, the
>>>>> ODU2 would be signaled within the ODU3.  Again, since the
>> ODU2 might
>>>>> support multiple hierarchies, one does not want to specify a
>>>> particular hierarchy.
>>>>>
>>>>>
>>>>>
>>>>> Once the OUD2 is established, the ODU0 is signaled.  Since
>>>> it does not
>>>>> support any further hierarchy, none is specified.
>>>>>
>>>>>
>>>>>
>>>>> [Fatai] Hierarchy information is necessary when bundling
>>>> link is used.
>>>>> For your example, ODU0->ODU2->ODU3, when creating ODU2 FA-LSP over
>>>>> ODU3 links, ODU2 layer should be aware of that it should
>> pick up the
>>>>> right component link that can support ODU0 muxing (so the hierarchy
>>>>> ODU0->ODU2 should be carried when creating ODU2 FA-LSP), otherwise,
>>>>> this arbitrary
>>>>> ODU2 could be only support ODU1->ODU2, then ODU0 cannot be carried
>>>>> over this ODU2 FA-LSP.
>>>>>
>>>>>
>>>>>
>>>>> Thanks,
>>>>>
>>>>>
>>>>>
>>>>> John
>>>>>
>>>>>
>>>>>
>>>>> Sent from my iPhone
>>>>>
>>>>>
>>>>>
>>>>>> -----Original Message-----
>>>>>
>>>>>> From: Fatai Zhang [mailto:zhangfatai@huawei.com]
>>>>>
>>>>>> Sent: Tuesday, July 10, 2012 11:25 PM
>>>>>
>>>>>> To: Lou Berger
>>>>>
>>>>>> Cc: ccamp@ietf.org; Khuzema Pithewan;
>>>>>> zhangguoying@mail.ritt.com.cn;
>>>>>
>>>>>> daniele.ceccarelli@ericsson.com; Linyi; xuyunbin@mail.ritt.com.cn;
>>>>>
>>>>>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO);
>>>>>> diego.caviglia@ericsson.com;
>>>>>
>>>>>> Rajan Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO
>>>> (SERGIO); John E
>>>>>
>>>>>> Drake
>>>>>
>>>>>> Subject: : : Updates on OTN signaling draft
>>>>>
>>>>>>
>>>>>
>>>>>> Hi Lou,
>>>>>
>>>>>>
>>>>>
>>>>>> Let me repeat the requirement of this information.
>>>>>
>>>>>> When an ODU (e.g., ODU1) with one specific TSG (because of the
>>>>>> ingress
>>>>>
>>>>>> interface constraint) needs to be created over another higher ODU
>>>>>
>>>>>> (e.g., ODU3 FA-LSP), the penultimate hop of this ODU3
>>>> FA-LSP needs to
>>>>>
>>>>>> be aware of which TSG should be picked up from the TE link (ie.,
>>>>>> choose
>>>>>
>>>>>> the right component link which can support the client TSG), so the
>>>>>
>>>>>> client TSG information (and hierarchy information) needs to be
>>>>>> conveyed
>>>>>
>>>>>> in the signaling to create the ODU FA-LSP.
>>>>>
>>>>>>
>>>>>
>>>>>> The requirement has been discussed in the previous IETF meetings,
>>>>>
>>>>>> please get more information from the presentation slides
>> of Taipei
>>>>>> and
>>>>>
>>>>>> Paris meetings.
>>>>>
>>>>>>
>>>>>
>>>>>> Given that people understand the above requirment, let's
>>>> focus on the
>>>>>
>>>>>> potential solutions. In Taipei meeting, the authors compared three
>>>>>
>>>>>> alternatives and discussed in the list:
>>>>>
>>>>>> (1) Introducing a new object: WG prefer to re-use the existing
>>>>>> things,
>>>>>
>>>>>> so the authors switched to (2).
>>>>>
>>>>>> (2) Extending GPID to carry TSG/PT information: Lou once
>> suggested
>>>>>> this
>>>>>
>>>>>> approach and the authors finally agreed on this because it is
>>>>>> needed
>>>>>
>>>>>> only for penultimate hop to select right link to egress.
>> Note that
>>>>>> TSG
>>>>>
>>>>>> isn't needed for loose ERO expansion.
>>>>>
>>>>>> (3) Extending Encoding Type: Encoding type is an end to end
>>>>>> constraint
>>>>>
>>>>>> (See RFC4328), so the authors think it is not the right place.
>>>>>
>>>>>>
>>>>>
>>>>>> Do we need to poll how many people support which approach
>>>>>> perspectively
>>>>>
>>>>>> (or any other approach)?
>>>>>
>>>>>>
>>>>>
>>>>>>
>>>>>
>>>>>>
>>>>>
>>>>>> Thanks
>>>>>
>>>>>>
>>>>>
>>>>>> Fatai
>>>>>
>>>>>>
>>>>>
>>>>>>
>>>>>
>>>>>> -----ʼԭ-----
>>>>>
>>>>>> : Lou Berger [mailto:lberger@labn.net]
>>>>>
>>>>>> ʱ: 2012710 22:33
>>>>>
>>>>>> ռ: Fatai Zhang
>>>>>
>>>>>> : ccamp@ietf.org; Khuzema Pithewan;
>>>>>> zhangguoying@mail.ritt.com.cn;
>>>>>
>>>>>> daniele.ceccarelli@ericsson.com; Linyi; xuyunbin@mail.ritt.com.cn;
>>>>>
>>>>>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO);
>>>>>> diego.caviglia@ericsson.com;
>>>>>
>>>>>> Rajan Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO
>>>> (SERGIO); John E
>>>>>
>>>>>> Drake
>>>>>
>>>>>> : Re: : Updates on OTN signaling draft
>>>>>
>>>>>>
>>>>>
>>>>>> Fatai,
>>>>>
>>>>>>
>>>>>
>>>>>> See below for in-line responses.
>>>>>
>>>>>>
>>>>>
>>>>>> On 7/10/2012 5:34 AM, Fatai Zhang wrote:
>>>>>
>>>>>>>
>>>>>
>>>>>>>
>>>>>
>>>>>>> Hi Lou,
>>>>>
>>>>>>>
>>>>>
>>>>>>>
>>>>>
>>>>>>>
>>>>>
>>>>>>> Please see in-line below.
>>>>>
>>>>>>>>
>>>>>
>>>>>>>
>>>>>
>>>>>>> Note that lets use HTML format to make the mails readable, J
>>>>>
>>>>>>>
>>>>>
>>>>>>>
>>>>>
>>>>>>>
>>>>>
>>>>>>> Thanks
>>>>>
>>>>>>>
>>>>>
>>>>>>>
>>>>>
>>>>>>>
>>>>>
>>>>>>> Fatai
>>>>>
>>>>>>>
>>>>>
>>>>>>>
>>>>>
>>>>>>>
>>>>>
>>>>>>>
>>>>>
>>>>>>>
>>>>>
>>>>>>> -----ʼԭ-----
>>>>>
>>>>>>> : Lou Berger [mailto:lberger@labn.net]
>>>>>
>>>>>>> ʱ: 2012710 5:27
>>>>>
>>>>>>> ռ: Fatai Zhang
>>>>>
>>>>>>> : ccamp@ietf.org; Khuzema Pithewan;
>>>>>
>>>>>> zhangguoying@mail.ritt.com.cn;
>>>>>
>>>>>>> daniele.ceccarelli@ericsson.com; Linyi;
>> xuyunbin@mail.ritt.com.cn;
>>>>>
>>>>>>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO);
>>>>>
>>>>>>> diego.caviglia@ericsson.com; Rajan Rao; IBryskin@advaoptical.com;
>>>>>
>>>>>>> BELOTTI, SERGIO (SERGIO); John E Drake
>>>>>
>>>>>>> : Re: Updates on OTN signaling draft
>>>>>
>>>>>>>
>>>>>
>>>>>>>
>>>>>
>>>>>>>
>>>>>
>>>>>>> [Woops, this was stuck in my outbox from last week!]
>>>>>
>>>>>>>
>>>>>
>>>>>>>
>>>>>
>>>>>>>
>>>>>
>>>>>>> Fatai/Authors,
>>>>>
>>>>>>>
>>>>>
>>>>>>>          G-PID is a fine place to carry information about the
>>>>>
>>>>>> format/type of information carried by an LSP. An important
>>>>>
>>>>>> consideration is that G-PID information is not used as
>> part of path
>>>>>
>>>>>> computation, and is not used by transit nodes except in
>> the case of
>>>>>> the
>>>>>
>>>>>> penultimate hop (for PHP).
>>>>>
>>>>>>>
>>>>>
>>>>>>> When we last discussed this, some authors stated that TSG was
>>>>>>> needed
>>>>>
>>>>>> as part of path computation, including at transit nodes
>> doing loose
>>>>>> ERO
>>>>>
>>>>>> expansion.  Hence the discussed inclusion of TSG in LSP
>>>> Encoding Type.
>>>>>
>>>>>>>
>>>>>
>>>>>>> If the authors are now willing to state that TSG isn't needed for
>>>>>
>>>>>> loose ERO expansion, then G-PID seems the perfect choice.
>>>>>
>>>>>>>
>>>>>
>>>>>>> Do all the authors agree with such this statement (and change)?
>>>>>
>>>>>>
>>>>>
>>>>>>> [Authors] After lots of discussion, the authors came to conclude
>>>>>>> that
>>>>>
>>>>>> it is needed only for penultimate hop to select right link to
>>>>>> egress
>>>>>
>>>>>> and hence the change.
>>>>>
>>>>>>
>>>>>
>>>>>> Can one of the authors summarize the discussion for the WG?
>>>>>
>>>>>>
>>>>>
>>>>>> The authors are asking for WG support, so should provide the
>>>>>> technical
>>>>>
>>>>>> basis for the position. Once the requirements are
>>>> articulated, the WG
>>>>>
>>>>>> can be in a position to judge/agree/disagree with the proposed
>>>>>
>>>>>> solution.
>>>>>
>>>>>>
>>>>>
>>>>>>>
>>>>>
>>>>>>> As I mentioned on the on the conference call, and my
>> mail of 6/18,
>>>>>
>>>>>> the use of G-PID as part of a path selection is really part of the
>>>>>
>>>>>> general issue seen in MLN. On the call we agreed that non-OTN MLN
>>>>>> will
>>>>>
>>>>>> be handled as the standard MLN case, without OTN-specific
>> additions.
>>>>>
>>>>>>>
>>>>>
>>>>>>> Unless I'm misreading your mail, you are *not* proposing
>> to treat
>>>>>>> the
>>>>>
>>>>>> intra-OTN (hierarchy) case as generic MLN but rather a
>> special case
>>>>>> by
>>>>>
>>>>>> bundling some upper OTN hierarchy information as part of a lower
>>>>>> H-LSPs
>>>>>
>>>>>> (in Hierarchy TLV).
>>>>>
>>>>>>>
>>>>>
>>>>>>> Correct?
>>>>>
>>>>>>>
>>>>>
>>>>>>> [Authors] Correct, it is the latter one.
>>>>>
>>>>>>>
>>>>>
>>>>>>> If my reading is correct, then I think the authors need
>> to discuss
>>>>>
>>>>>> their technical reasons for their "preference" and why the
>>>> previously
>>>>>
>>>>>> reached compromise position (as articulated in my mail of
>> 6/18) is
>>>>>> not
>>>>>
>>>>>> acceptable.
>>>>>
>>>>>>>
>>>>>
>>>>>>> [Authors] After checking after conf call, the authors think that
>>>>>
>>>>>> Encoding type is an end to end constraint (See RFC4328) and GPID
>>>>>> should
>>>>>
>>>>>> be the right place as you mention above.
>>>>>
>>>>>>
>>>>>
>>>>>> This goes to requirements, in today's GMPLS G-PID is not
>>>> part of path
>>>>>
>>>>>> computation except in the context of MRN/MLN.
>>>>>
>>>>>>
>>>>>
>>>>>>>
>>>>>
>>>>>>> Speaking only as an individual contributor, given the
>>>> difficulty in
>>>>>
>>>>>> reaching a consensus on how to treat intra-OTN (hierarchy) as a
>>>>>> special
>>>>>
>>>>>> case, I personally now prefer to avoid any technology specific co-
>>>>>
>>>>>> mingling of layers and to address the intra-OTN (hierarchy) case
>>>>>> via
>>>>>
>>>>>> generic MLN (or other generic mechanisms).  I think this position
>>>>>> would
>>>>>
>>>>>> translate to removing the Hierarchy TLV from the OTN signaling
>>>>>> draft
>>>>>
>>>>>> and spinning up a new draft to cover (OTN and generic)
>>>>>> intra-technology
>>>>>
>>>>>> MLN.
>>>>>
>>>>>>>
>>>>>
>>>>>>> [Authors] The authors would like to focus on OTN specific by
>>>>>>> removing
>>>>>
>>>>>> Encoding type and Switching type in the Hierarchy TLV(but keeping
>>>>>
>>>>>> Signal Type). It is OK to have a new draft to cover generic intra-
>>>>>
>>>>>> technology MLN.
>>>>>
>>>>>>
>>>>>
>>>>>> How is the revised TLV to be used?  Do the authors have a specific
>>>>>
>>>>>> proposal that covers "generic intra-technology MLN"?
>>>>>
>>>>>>
>>>>>
>>>>>> Lou
>>>>>
>>>>>>
>>>>>
>>>>>>>
>>>>>
>>>>>>>
>>>>>
>>>>>>> Lou
>>>>>
>>>>>>>
>>>>>
>>>>>>>
>>>>>
>>>>>>>
>>>>>
>>>>>>> On 7/5/2012 9:25 PM, Fatai Zhang wrote:
>>>>>
>>>>>>>
>>>>>
>>>>>>>>
>>>>>
>>>>>>>
>>>>>
>>>>>>>> Hi all,
>>>>>
>>>>>>>
>>>>>
>>>>>>>>
>>>>>
>>>>>>>
>>>>>
>>>>>>>> We are updating OTN signaling draft. Since we had lots of
>>>>>>>> discussion
>>>>>
>>>>>>>> on
>>>>>
>>>>>>> the TSG stuff in the list, let's converge on the solution.
>>>>>
>>>>>>>
>>>>>
>>>>>>>>
>>>>>
>>>>>>>
>>>>>
>>>>>>>> Based on the previous discussion between Lou and co-authors, the
>>>>>
>>>>>>> authors prefer the following changes:
>>>>>
>>>>>>>
>>>>>
>>>>>>>>
>>>>>
>>>>>>>
>>>>>
>>>>>>>> (1) Extending GPID to carry TSG in signaling, since its
>>>> purpose in
>>>>>
>>>>>>> signaling is to ensure that endpoints of the LSP being signaled
>>>>>>> have
>>>>>
>>>>>> a
>>>>>
>>>>>>> consistent view of the TSG to be offered to its clients and LSP
>>>>>
>>>>>>> endpoint consistency is the purpose for which the GPID
>>>> was designed.
>>>>>
>>>>>>>
>>>>>
>>>>>>>>
>>>>>
>>>>>>>
>>>>>
>>>>>>>> (2)Extending LSPA to carry hierarchy information (ie., Type=2
>>>>>
>>>>>>>> Hierarchy
>>>>>
>>>>>>> TLV).
>>>>>
>>>>>>>
>>>>>
>>>>>>>>
>>>>>
>>>>>>>
>>>>>
>>>>>>>> Any comments?
>>>>>
>>>>>>>
>>>>>
>>>>>>>>
>>>>>
>>>>>>>
>>>>>
>>>>>>>> Thanks
>>>>>
>>>>>>>
>>>>>
>>>>>>>>
>>>>>
>>>>>>>
>>>>>
>>>>>>>> Fatai
>>>>>
>>>>>>>
>>>>>
>>>>
>>

From daniele.ceccarelli@ericsson.com  Fri Jul 13 07:59:19 2012
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From: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>
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Daniele,

See below.

On 7/13/2012 10:59 AM, Daniele Ceccarelli wrote:
> Lou,
> 
>>
>> Daniele,
>>
>>
>> On 7/13/2012 9:04 AM, Daniele Ceccarelli wrote:
>>> Lou,
>>>
>>> [...]
>>>>
>>>> So what do you believe is needed to support 1?
>>>>
>>>> How does this differ than what is needed for generic MLN?
>>>>
>>>> Thanks,
>>>> Lou
>>>>
>>>
>>> What is needed in OTN is:
>>> A) TSG
>>
>> And this is covered in the current (MRN/MLN-aligned) proposal
>> via G-PID, right?
> 
> Correct
> 
>>
>>> B) Hierarchy (i must be honest, i should re-think about it because i
>>> don't remember why it is needed but i'm sure we came to the
>> conclusion
>>> it is need)
>>>
>>
>> Given the current discussion (including John's comments) it
>> would be good to understand what purpose this serves and how
>> it differs from what is needed to satisfy your next point.
> 
> Well, the main reason is that the famoous penultimte hop, when
> reached by the path message, needs to know not only that an e.g. ODU4
> is being set up but that e.g. An ODU2->ODU3->ODU4 needs to be
> established, hence an H-LPS supporting ODU2->ODU3->ODU4 demuxing on
> the other end of the link is needed.
> 

So how is this different than any other MRN/MLN example (e.g., Ether LSP
over SDH LSP over Lambda LSP)?

As John was implying in his e-mail, (why) does intra-OTN need a
different solution?

>>
>>
>>> What is needed in MLN is also:
>>> C) adaptation information (not needed in intra-OTN as there is a 1:1
>>> relationship for any mapping)
>>
>> Presumably this is the focus of
>> draft-bcg-ccamp-gmpls-ml-implications-00, right?
> 
> Sort of. Such draft was born as a consequence of comments received in
> Paris. The goal was defining requirements and use cases for INTER
> Switch Cap MLN (followed then by protocol extensions). 

Okay.

> What is coming out in these days is also INTRA Switch Cap issues. 

Agreed.

> If the other
> authors agree it is possible to extend it to the INTRA switch cap
> case also and then work on the "technology agnostic" protocols
> extension.
> 

Well that would certainly fit the WG charter (comment as WG contributor).

Also, WRT to the WG document, it's the WG's call, not just the authors.

Lou

>>
>> Thanks,
>> Lou
>>>
>>> Thanks
>>> Daniele
>>>
>>>
>>>
>>>>>> -----Original Message-----
>>>>>> From: Fatai Zhang [mailto:zhangfatai@huawei.com]
>>>>>> Sent: venerd 13 luglio 2012 12.04
>>>>>> To: Lou Berger
>>>>>> Cc: John E Drake; ccamp@ietf.org; Khuzema Pithewan;
>>>>>> zhangguoying@mail.ritt.com.cn; Daniele Ceccarelli; Linyi;
>>>>>> xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO
>>>> VITTORIO);
>>>>>> Diego Caviglia; Rajan Rao; IBryskin@advaoptical.com;
>>>> BELOTTI, SERGIO
>>>>>> (SERGIO); Fatai Zhang
>>>>>> Subject: : : : Updates on OTN signaling draft
>>>>>>
>>>>>> Hi Lou,
>>>>>>
>>>>>> For bundling link, it just shows the collection capability
>>>> of all the
>>>>>> component links and it cannot differentiate which component can
>>>>>> support which capability.
>>>>>>
>>>>>> For example, a TE link with two component links ( one can
>> support A
>>>>>> (e.g., TSG=1.25)  and another one can support B
>>>> (TSG=2.5G)), and then
>>>>>> the TE link will claim that it can support both A&B. When an LSP
>>>>>> needs to pick up A of the TE link, we have to indicate A in the
>>>>>> signaling explicitly to make the corresponding nodes to
>> pick up the
>>>>>> correct component link with capability A.
>>>>>>
>>>>>> If no bunding, everything about the TE link (actually it
>>>> only has one
>>>>>> component link) has been advertised, so the path
>>>> computation can make
>>>>>> the correct choice (ERO can indicate the correct TE link (ie.,
>>>>>> component link)).
>>>>>>
>>>>>> Does this make sense?
>>>>>>
>>>>>> Thanks
>>>>>>
>>>>>> Fatai
>>>>>>
>>>>>>
>>>>>> -----ʼԭ-----
>>>>>> : Lou Berger [mailto:lberger@labn.net]
>>>>>> ʱ: 2012712 22:31
>>>>>> ռ: Fatai Zhang
>>>>>> : John E Drake; ccamp@ietf.org; Khuzema Pithewan;
>>>>>> zhangguoying@mail.ritt.com.cn; daniele.ceccarelli@ericsson.com;
>>>>>> Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO
>>>>>> VITTORIO); diego.caviglia@ericsson.com; Rajan Rao;
>>>>>> IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO)
>>>>>> : Re: : : Updates on OTN signaling draft
>>>>>>
>>>>>> Fatai,
>>>>>>       I think I agree with John (as WG contributor).
>>>>>>
>>>>>> Why isn't the same issue present for non-bundled links when ERO
>>>>>> expansion takes place at any place other than the ingress node?
>>>>>>
>>>>>> How does this issue differ from any MLN H-LSP?
>>>>>>
>>>>>> Lou
>>>>>>
>>>>>> On 7/11/2012 11:54 PM, Fatai Zhang wrote:
>>>>>>>
>>>>>>>
>>>>>>> Hi John,
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> I think TSG and hierarchy information really confused
>> many people,
>>>>>>> which causes the same questions will come out again after we
>>>>>> explained
>>>>>>> many times, :-)
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> The simple way is to remove link bundling (or bundle the
>>>> homogeneous
>>>>>>> component links) in the routing, then all the issues disappear
>>>>>>> immediately ( i.e., no need TSG and hierarchy
>> information at all),
>>>>>>> otherwise, it needs these two kinds of information in some cases.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> I really suspect the value of bundling in the GMPLS for TDM
>>>>>> or WSON. I
>>>>>>> think this is interesting point to be investigated, but it
>>>>>> seems that
>>>>>>> not too many people are interested, J
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> Please see in-line below.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> Thanks
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> Fatai
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> -----ʼԭ-----
>>>>>>> : John E Drake [mailto:jdrake@juniper.net]
>>>>>>> ʱ: 2012712 2:54
>>>>>>> ռ: Fatai Zhang; Lou Berger
>>>>>>> : ccamp@ietf.org; Khuzema Pithewan;
>>>> zhangguoying@mail.ritt.com.cn;
>>>>>>> daniele.ceccarelli@ericsson.com; Linyi;
>> xuyunbin@mail.ritt.com.cn;
>>>>>>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO);
>>>>>>> diego.caviglia@ericsson.com; Rajan Rao;
>> IBryskin@advaoptical.com;
>>>>>>> BELOTTI, SERGIO (SERGIO)
>>>>>>> : RE: : Updates on OTN signaling draft
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> Fatai,
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> Is it not the case that *any* node, regardless of whether
>>>> it is the
>>>>>>> ingress node, an intermediate node, or the penultimate
>> node, that
>>>>>>> selects the interface for the egress LSP endpoint MUST
>> ensure that
>>>>>>> that interface has a TSG that is compatible with the TSG of
>>>>>> interface
>>>>>>> for the ingress LSP endpoint?
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> [Fatai] There are two cases for TSG issue. One is for ODU
>>>>>> service LSP
>>>>>>> (carrying non-ODU) creation, the second one is ODU FA-LSP
>>>>>> creation for
>>>>>>> carrying another lower ODU. For the first case, the TSG can be
>>>>>>> changeable segment by segment (link by link). For
>> example, when an
>>>>>>> ODU1 (to carry non-ODU) is being created over ODU3 link, the
>>>>>> TSG could
>>>>>>> be different link by link. For the second case, this is
>>>> what we are
>>>>>>> talking about with Lou; in this case, only end points and
>>>>>> penultimate
>>>>>>> node need to have the compatible TSG.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> Also, it occurs to me that hierarchy is not only unnecessary but
>>>>>>> counter-productive in signaling.  When one establishes an
>>>> ODU3, for
>>>>>>> example, that ODU3 may be used to instantiate multiple
>>>>>> hierarchies, so
>>>>>>> one does not want to specify a particular hierarchy.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> If one is establishing this ODU3 in order to eventually
>>>> establish an
>>>>>>> ODU0 LSP over an ODU2 LSP, then after the ODU3 is
>> established, the
>>>>>>> ODU2 would be signaled within the ODU3.  Again, since the
>>>> ODU2 might
>>>>>>> support multiple hierarchies, one does not want to specify a
>>>>>> particular hierarchy.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> Once the OUD2 is established, the ODU0 is signaled.  Since
>>>>>> it does not
>>>>>>> support any further hierarchy, none is specified.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> [Fatai] Hierarchy information is necessary when bundling
>>>>>> link is used.
>>>>>>> For your example, ODU0->ODU2->ODU3, when creating ODU2
>> FA-LSP over
>>>>>>> ODU3 links, ODU2 layer should be aware of that it should
>>>> pick up the
>>>>>>> right component link that can support ODU0 muxing (so the
>>>>>>> hierarchy
>>>>>>> ODU0->ODU2 should be carried when creating ODU2 FA-LSP),
>>>>>>> ODU0->otherwise,
>>>>>>> this arbitrary
>>>>>>> ODU2 could be only support ODU1->ODU2, then ODU0 cannot
>> be carried
>>>>>>> over this ODU2 FA-LSP.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> Thanks,
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> John
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> Sent from my iPhone
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>> -----Original Message-----
>>>>>>>
>>>>>>>> From: Fatai Zhang [mailto:zhangfatai@huawei.com]
>>>>>>>
>>>>>>>> Sent: Tuesday, July 10, 2012 11:25 PM
>>>>>>>
>>>>>>>> To: Lou Berger
>>>>>>>
>>>>>>>> Cc: ccamp@ietf.org; Khuzema Pithewan;
>>>>>>>> zhangguoying@mail.ritt.com.cn;
>>>>>>>
>>>>>>>> daniele.ceccarelli@ericsson.com; Linyi;
>>>>>>>> xuyunbin@mail.ritt.com.cn;
>>>>>>>
>>>>>>>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO);
>>>>>>>> diego.caviglia@ericsson.com;
>>>>>>>
>>>>>>>> Rajan Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO
>>>>>> (SERGIO); John E
>>>>>>>
>>>>>>>> Drake
>>>>>>>
>>>>>>>> Subject: : : Updates on OTN signaling draft
>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>> Hi Lou,
>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>> Let me repeat the requirement of this information.
>>>>>>>
>>>>>>>> When an ODU (e.g., ODU1) with one specific TSG (because of the
>>>>>>>> ingress
>>>>>>>
>>>>>>>> interface constraint) needs to be created over another
>> higher ODU
>>>>>>>
>>>>>>>> (e.g., ODU3 FA-LSP), the penultimate hop of this ODU3
>>>>>> FA-LSP needs to
>>>>>>>
>>>>>>>> be aware of which TSG should be picked up from the TE
>> link (ie.,
>>>>>>>> choose
>>>>>>>
>>>>>>>> the right component link which can support the client TSG), so
>>>>>>>> the
>>>>>>>
>>>>>>>> client TSG information (and hierarchy information) needs to be
>>>>>>>> conveyed
>>>>>>>
>>>>>>>> in the signaling to create the ODU FA-LSP.
>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>> The requirement has been discussed in the previous IETF
>> meetings,
>>>>>>>
>>>>>>>> please get more information from the presentation slides
>>>> of Taipei
>>>>>>>> and
>>>>>>>
>>>>>>>> Paris meetings.
>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>> Given that people understand the above requirment, let's
>>>>>> focus on the
>>>>>>>
>>>>>>>> potential solutions. In Taipei meeting, the authors compared
>>>>>>>> three
>>>>>>>
>>>>>>>> alternatives and discussed in the list:
>>>>>>>
>>>>>>>> (1) Introducing a new object: WG prefer to re-use the existing
>>>>>>>> things,
>>>>>>>
>>>>>>>> so the authors switched to (2).
>>>>>>>
>>>>>>>> (2) Extending GPID to carry TSG/PT information: Lou once
>>>> suggested
>>>>>>>> this
>>>>>>>
>>>>>>>> approach and the authors finally agreed on this because it is
>>>>>>>> needed
>>>>>>>
>>>>>>>> only for penultimate hop to select right link to egress.
>>>> Note that
>>>>>>>> TSG
>>>>>>>
>>>>>>>> isn't needed for loose ERO expansion.
>>>>>>>
>>>>>>>> (3) Extending Encoding Type: Encoding type is an end to end
>>>>>>>> constraint
>>>>>>>
>>>>>>>> (See RFC4328), so the authors think it is not the right place.
>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>> Do we need to poll how many people support which approach
>>>>>>>> perspectively
>>>>>>>
>>>>>>>> (or any other approach)?
>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>> Thanks
>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>> Fatai
>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>> -----ʼԭ-----
>>>>>>>
>>>>>>>> : Lou Berger [mailto:lberger@labn.net]
>>>>>>>
>>>>>>>> ʱ: 2012710 22:33
>>>>>>>
>>>>>>>> ռ: Fatai Zhang
>>>>>>>
>>>>>>>> : ccamp@ietf.org; Khuzema Pithewan;
>>>>>>>> zhangguoying@mail.ritt.com.cn;
>>>>>>>
>>>>>>>> daniele.ceccarelli@ericsson.com; Linyi;
>>>>>>>> xuyunbin@mail.ritt.com.cn;
>>>>>>>
>>>>>>>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO);
>>>>>>>> diego.caviglia@ericsson.com;
>>>>>>>
>>>>>>>> Rajan Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO
>>>>>> (SERGIO); John E
>>>>>>>
>>>>>>>> Drake
>>>>>>>
>>>>>>>> : Re: : Updates on OTN signaling draft
>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>> Fatai,
>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>> See below for in-line responses.
>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>> On 7/10/2012 5:34 AM, Fatai Zhang wrote:
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>> Hi Lou,
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>> Please see in-line below.
>>>>>>>
>>>>>>>>>>
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>> Note that lets use HTML format to make the mails readable, J
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>> Thanks
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>> Fatai
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>> -----ʼԭ-----
>>>>>>>
>>>>>>>>> : Lou Berger [mailto:lberger@labn.net]
>>>>>>>
>>>>>>>>> ʱ: 2012710 5:27
>>>>>>>
>>>>>>>>> ռ: Fatai Zhang
>>>>>>>
>>>>>>>>> : ccamp@ietf.org; Khuzema Pithewan;
>>>>>>>
>>>>>>>> zhangguoying@mail.ritt.com.cn;
>>>>>>>
>>>>>>>>> daniele.ceccarelli@ericsson.com; Linyi;
>>>> xuyunbin@mail.ritt.com.cn;
>>>>>>>
>>>>>>>>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO);
>>>>>>>
>>>>>>>>> diego.caviglia@ericsson.com; Rajan Rao;
>>>>>>>>> IBryskin@advaoptical.com;
>>>>>>>
>>>>>>>>> BELOTTI, SERGIO (SERGIO); John E Drake
>>>>>>>
>>>>>>>>> : Re: Updates on OTN signaling draft
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>> [Woops, this was stuck in my outbox from last week!]
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>> Fatai/Authors,
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>          G-PID is a fine place to carry information about the
>>>>>>>
>>>>>>>> format/type of information carried by an LSP. An important
>>>>>>>
>>>>>>>> consideration is that G-PID information is not used as
>>>> part of path
>>>>>>>
>>>>>>>> computation, and is not used by transit nodes except in
>>>> the case of
>>>>>>>> the
>>>>>>>
>>>>>>>> penultimate hop (for PHP).
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>> When we last discussed this, some authors stated that TSG was
>>>>>>>>> needed
>>>>>>>
>>>>>>>> as part of path computation, including at transit nodes
>>>> doing loose
>>>>>>>> ERO
>>>>>>>
>>>>>>>> expansion.  Hence the discussed inclusion of TSG in LSP
>>>>>> Encoding Type.
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>> If the authors are now willing to state that TSG isn't needed
>>>>>>>>> for
>>>>>>>
>>>>>>>> loose ERO expansion, then G-PID seems the perfect choice.
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>> Do all the authors agree with such this statement (and change)?
>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>>> [Authors] After lots of discussion, the authors came
>> to conclude
>>>>>>>>> that
>>>>>>>
>>>>>>>> it is needed only for penultimate hop to select right link to
>>>>>>>> egress
>>>>>>>
>>>>>>>> and hence the change.
>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>> Can one of the authors summarize the discussion for the WG?
>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>> The authors are asking for WG support, so should provide the
>>>>>>>> technical
>>>>>>>
>>>>>>>> basis for the position. Once the requirements are
>>>>>> articulated, the WG
>>>>>>>
>>>>>>>> can be in a position to judge/agree/disagree with the proposed
>>>>>>>
>>>>>>>> solution.
>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>> As I mentioned on the on the conference call, and my
>>>> mail of 6/18,
>>>>>>>
>>>>>>>> the use of G-PID as part of a path selection is really part of
>>>>>>>> the
>>>>>>>
>>>>>>>> general issue seen in MLN. On the call we agreed that
>> non-OTN MLN
>>>>>>>> will
>>>>>>>
>>>>>>>> be handled as the standard MLN case, without OTN-specific
>>>> additions.
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>> Unless I'm misreading your mail, you are *not* proposing
>>>> to treat
>>>>>>>>> the
>>>>>>>
>>>>>>>> intra-OTN (hierarchy) case as generic MLN but rather a
>>>> special case
>>>>>>>> by
>>>>>>>
>>>>>>>> bundling some upper OTN hierarchy information as part
>> of a lower
>>>>>>>> H-LSPs
>>>>>>>
>>>>>>>> (in Hierarchy TLV).
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>> Correct?
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>> [Authors] Correct, it is the latter one.
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>> If my reading is correct, then I think the authors need
>>>> to discuss
>>>>>>>
>>>>>>>> their technical reasons for their "preference" and why the
>>>>>> previously
>>>>>>>
>>>>>>>> reached compromise position (as articulated in my mail of
>>>> 6/18) is
>>>>>>>> not
>>>>>>>
>>>>>>>> acceptable.
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>> [Authors] After checking after conf call, the authors
>> think that
>>>>>>>
>>>>>>>> Encoding type is an end to end constraint (See RFC4328)
>> and GPID
>>>>>>>> should
>>>>>>>
>>>>>>>> be the right place as you mention above.
>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>> This goes to requirements, in today's GMPLS G-PID is not
>>>>>> part of path
>>>>>>>
>>>>>>>> computation except in the context of MRN/MLN.
>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>> Speaking only as an individual contributor, given the
>>>>>> difficulty in
>>>>>>>
>>>>>>>> reaching a consensus on how to treat intra-OTN (hierarchy) as a
>>>>>>>> special
>>>>>>>
>>>>>>>> case, I personally now prefer to avoid any technology specific
>>>>>>>> co-
>>>>>>>
>>>>>>>> mingling of layers and to address the intra-OTN
>> (hierarchy) case
>>>>>>>> via
>>>>>>>
>>>>>>>> generic MLN (or other generic mechanisms).  I think
>> this position
>>>>>>>> would
>>>>>>>
>>>>>>>> translate to removing the Hierarchy TLV from the OTN signaling
>>>>>>>> draft
>>>>>>>
>>>>>>>> and spinning up a new draft to cover (OTN and generic)
>>>>>>>> intra-technology
>>>>>>>
>>>>>>>> MLN.
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>> [Authors] The authors would like to focus on OTN specific by
>>>>>>>>> removing
>>>>>>>
>>>>>>>> Encoding type and Switching type in the Hierarchy
>> TLV(but keeping
>>>>>>>
>>>>>>>> Signal Type). It is OK to have a new draft to cover generic
>>>>>>>> intra-
>>>>>>>
>>>>>>>> technology MLN.
>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>> How is the revised TLV to be used?  Do the authors have a
>>>>>>>> specific
>>>>>>>
>>>>>>>> proposal that covers "generic intra-technology MLN"?
>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>> Lou
>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>> Lou
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>> On 7/5/2012 9:25 PM, Fatai Zhang wrote:
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>>
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>> Hi all,
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>>
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>> We are updating OTN signaling draft. Since we had lots of
>>>>>>>>>> discussion
>>>>>>>
>>>>>>>>>> on
>>>>>>>
>>>>>>>>> the TSG stuff in the list, let's converge on the solution.
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>>
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>> Based on the previous discussion between Lou and co-authors,
>>>>>>>>>> the
>>>>>>>
>>>>>>>>> authors prefer the following changes:
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>>
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>> (1) Extending GPID to carry TSG in signaling, since its
>>>>>> purpose in
>>>>>>>
>>>>>>>>> signaling is to ensure that endpoints of the LSP being
>> signaled
>>>>>>>>> have
>>>>>>>
>>>>>>>> a
>>>>>>>
>>>>>>>>> consistent view of the TSG to be offered to its clients and LSP
>>>>>>>
>>>>>>>>> endpoint consistency is the purpose for which the GPID
>>>>>> was designed.
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>>
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>> (2)Extending LSPA to carry hierarchy information (ie., Type=2
>>>>>>>
>>>>>>>>>> Hierarchy
>>>>>>>
>>>>>>>>> TLV).
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>>
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>> Any comments?
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>>
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>> Thanks
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>>
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>>>>> Fatai
>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>>>
>>>>
>>

From internet-drafts@ietf.org  Fri Jul 13 08:57:38 2012
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Subject: [CCAMP] I-D Action: draft-ietf-ccamp-oam-configuration-fwk-08.txt
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A New Internet-Draft is available from the on-line Internet-Drafts director=
ies.
 This draft is a work item of the Common Control and Measurement Plane Work=
ing Group of the IETF.

	Title           : GMPLS RSVP-TE extensions for OAM Configuration
	Author(s)       : Attila Takacs
                          Don Fedyk
                          Jia He
	Filename        : draft-ietf-ccamp-oam-configuration-fwk-08.txt
	Pages           : 24
	Date            : 2012-07-13

Abstract:
   OAM is an integral part of transport connections, hence it is
   required that OAM functions are activated/deactivated in sync with
   connection commissioning/decommissioning; avoiding spurious alarms
   and ensuring consistent operation.  In certain technologies OAM
   entities are inherently established once the connection is set up,
   while other technologies require extra configuration to establish and
   configure OAM entities.  This document specifies extensions to
   RSVP-TE to support the establishment and configuration of OAM
   entities along with LSP signaling.



The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-ccamp-oam-configuration-fwk

There's also a htmlized version available at:
http://tools.ietf.org/html/draft-ietf-ccamp-oam-configuration-fwk-08

A diff from previous version is available at:
http://tools.ietf.org/rfcdiff?url2=3Ddraft-ietf-ccamp-oam-configuration-fwk=
-08


Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/


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Subject: [CCAMP] I-D Action: draft-ietf-ccamp-rsvp-te-eth-oam-ext-08.txt
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A New Internet-Draft is available from the on-line Internet-Drafts director=
ies.
 This draft is a work item of the Common Control and Measurement Plane Work=
ing Group of the IETF.

	Title           : GMPLS RSVP-TE Extensions for Ethernet OAM Configuration
	Author(s)       : Attila Takacs
                          Balazs Gero
                          Hao Long
	Filename        : draft-ietf-ccamp-rsvp-te-eth-oam-ext-08.txt
	Pages           : 20
	Date            : 2012-07-13

Abstract:
   The GMPLS controlled Ethernet Label Switching (GELS) work extended
   GMPLS RSVP-TE to support the establishment of Ethernet LSPs.  IEEE
   Ethernet Connectivity Fault Management (CFM) specifies an adjunct OAM
   flow to check connectivity in Ethernet networks.  CFM can be also
   used with Ethernet LSPs for fault detection and triggering recovery
   mechanisms.  The ITU-T Y.1731 specification builds on CFM and
   specifies additional OAM mechanisms, including Performance
   Monitoring, for Ethernet networks.  This document specifies
   extensions of GMPLS RSVP-TE to support the setup of the associated
   Ethernet OAM (CFM and Y.1731) entities defining Ethernet technology
   specific TLV based on [OAM-CONF-FWK].



The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-ccamp-rsvp-te-eth-oam-ext

There's also a htmlized version available at:
http://tools.ietf.org/html/draft-ietf-ccamp-rsvp-te-eth-oam-ext-08

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http://tools.ietf.org/rfcdiff?url2=3Ddraft-ietf-ccamp-rsvp-te-eth-oam-ext-08


Internet-Drafts are also available by anonymous FTP at:
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From daniele.ceccarelli@ericsson.com  Mon Jul 16 03:12:52 2012
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From: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>
To: Lou Berger <lberger@labn.net>
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From lberger@labn.net  Mon Jul 16 05:46:29 2012
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Date: Mon, 16 Jul 2012 08:47:03 -0400
From: Lou Berger <lberger@labn.net>
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Cc: "zhangguoying@mail.ritt.com.cn" <zhangguoying@mail.ritt.com.cn>, Linyi <yi.lin@huawei.com>, "ccamp@ietf.org" <ccamp@ietf.org>
Subject: Re: [CCAMP] =?gb2312?b?tPC4tDogtPC4tDogVXBkYXRlcyBvbiBPVE4gc2lnbmFs?= =?gb2312?b?aW5nIGRyYWZ0?=
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Daniele,

See below.

On 7/16/2012 6:13 AM, Daniele Ceccarelli wrote:
> Hi Lou,
> 
> Different week, same thread.
> 
> Please see below (some cuts to make it more readable)
> 
> 
> [snip]
> 
>>
>> So how is this different than any other MRN/MLN example (e.g.,
>> Ether LSP over SDH LSP over Lambda LSP)?
>>
>> As John was implying in his e-mail, (why) does intra-OTN need
>> a different solution?
> 
> Intra-OTN is missing, wrt actual MRN/MLN, the capability of signlaing
> the TSG, while Inter-OTN is missing also the Adaptation between
> client and server layers (e.g. Bit-sync vs Byte-sync mapping, X.86 vs
> GFP etc)
> 
> [snip]

fair enough.

> 
>>
>>> If the other
>>> authors agree it is possible to extend it to the INTRA
>> switch cap case
>>> also and then work on the "technology agnostic" protocols extension.
>>>
>>
>> Well that would certainly fit the WG charter (comment as WG
>> contributor).
>>
>> Also, WRT to the WG document, it's the WG's call, not just the authors.
> 
> Sure, I was referring to the "bcg" draft.

okay, wasn't sure.

> It appears we came to the conclusion that a general "intra switch
> cap" work is needed (non OTN specific).
> 
> My proposal was to include the problem statement in the bcg draft (so
> to make it cover both the inter and intra cases) and then work on a
> different encoding draft (I'm not sure the OTN signaling is the right
> place for general intra switch cap encoding. Maybe a pointer is more
> appropriate.

Sounds workable to me (and aligned with what John was saying).  Now
let's see if others disagree or if we have consensus!

Thanks,
Lou

> 
> Thanks
> Daniele
> 
>> Lou
>>
>>>>
>>>> Thanks,
>>>> Lou
>>>>>
>>>>> Thanks
>>>>> Daniele
>>>>>>>> -----Original Message-----
>>>>>>>> From: Fatai Zhang [mailto:zhangfatai@huawei.com]
>>>>>>>> Sent: venerd 13 luglio 2012 12.04
>>>>>>>> To: Lou Berger
>>>>>>>> Cc: John E Drake; ccamp@ietf.org; Khuzema Pithewan;
>>>>>>>> zhangguoying@mail.ritt.com.cn; Daniele Ceccarelli; Linyi;
>>>>>>>> xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO
>>>>>> VITTORIO);
>>>>>>>> Diego Caviglia; Rajan Rao; IBryskin@advaoptical.com;
>>>>>> BELOTTI, SERGIO
>>>>>>>> (SERGIO); Fatai Zhang
>>>>>>>> Subject: : : : Updates on OTN signaling draft
>>>>>>>>
>>>>>>>> Hi Lou,
>>>>>>>>
>>>>>>>> For bundling link, it just shows the collection capability
>>>>>> of all the
>>>>>>>> component links and it cannot differentiate which component can
>>>>>>>> support which capability.
>>>>>>>>
>>>>>>>> For example, a TE link with two component links ( one can
>>>> support A
>>>>>>>> (e.g., TSG=1.25)  and another one can support B
>>>>>> (TSG=2.5G)), and then
>>>>>>>> the TE link will claim that it can support both A&B. When an LSP
>>>>>>>> needs to pick up A of the TE link, we have to indicate A in the
>>>>>>>> signaling explicitly to make the corresponding nodes to
>>>> pick up the
>>>>>>>> correct component link with capability A.
>>>>>>>>
>>>>>>>> If no bunding, everything about the TE link (actually it
>>>>>> only has one
>>>>>>>> component link) has been advertised, so the path
>>>>>> computation can make
>>>>>>>> the correct choice (ERO can indicate the correct TE link (ie.,
>>>>>>>> component link)).
>>>>>>>>
>>>>>>>> Does this make sense?
>>>>>>>>
>>>>>>>> Thanks
>>>>>>>>
>>>>>>>> Fatai
>>>>>>>>
>>>>>>>>
>>>>>>>> -----ʼԭ-----
>>>>>>>> : Lou Berger [mailto:lberger@labn.net]
>>>>>>>> ʱ: 2012712 22:31
>>>>>>>> ռ: Fatai Zhang
>>>>>>>> : John E Drake; ccamp@ietf.org; Khuzema Pithewan;
>>>>>>>> zhangguoying@mail.ritt.com.cn; daniele.ceccarelli@ericsson.com;
>>>>>>>> Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO
>> VITTORIO (PIETRO
>>>>>>>> VITTORIO); diego.caviglia@ericsson.com; Rajan Rao;
>>>>>>>> IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO)
>>>>>>>> : Re: : : Updates on OTN signaling draft
>>>>>>>>
>>>>>>>> Fatai,
>>>>>>>>       I think I agree with John (as WG contributor).
>>>>>>>>
>>>>>>>> Why isn't the same issue present for non-bundled links when ERO
>>>>>>>> expansion takes place at any place other than the ingress node?
>>>>>>>>
>>>>>>>> How does this issue differ from any MLN H-LSP?
>>>>>>>>
>>>>>>>> Lou
>>>>>>>>
>>>>>>>> On 7/11/2012 11:54 PM, Fatai Zhang wrote:
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Hi John,
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> I think TSG and hierarchy information really confused
>>>> many people,
>>>>>>>>> which causes the same questions will come out again after we
>>>>>>>> explained
>>>>>>>>> many times, :-)
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> The simple way is to remove link bundling (or bundle the
>>>>>> homogeneous
>>>>>>>>> component links) in the routing, then all the issues disappear
>>>>>>>>> immediately ( i.e., no need TSG and hierarchy
>>>> information at all),
>>>>>>>>> otherwise, it needs these two kinds of information in
>> some cases.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> I really suspect the value of bundling in the GMPLS for TDM
>>>>>>>> or WSON. I
>>>>>>>>> think this is interesting point to be investigated, but it
>>>>>>>> seems that
>>>>>>>>> not too many people are interested, J
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Please see in-line below.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Thanks
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Fatai
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> -----ʼԭ-----
>>>>>>>>> : John E Drake [mailto:jdrake@juniper.net]
>>>>>>>>> ʱ: 2012712 2:54
>>>>>>>>> ռ: Fatai Zhang; Lou Berger
>>>>>>>>> : ccamp@ietf.org; Khuzema Pithewan;
>>>>>> zhangguoying@mail.ritt.com.cn;
>>>>>>>>> daniele.ceccarelli@ericsson.com; Linyi;
>>>> xuyunbin@mail.ritt.com.cn;
>>>>>>>>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO);
>>>>>>>>> diego.caviglia@ericsson.com; Rajan Rao;
>>>> IBryskin@advaoptical.com;
>>>>>>>>> BELOTTI, SERGIO (SERGIO)
>>>>>>>>> : RE: : Updates on OTN signaling draft
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Fatai,
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Is it not the case that *any* node, regardless of whether
>>>>>> it is the
>>>>>>>>> ingress node, an intermediate node, or the penultimate
>>>> node, that
>>>>>>>>> selects the interface for the egress LSP endpoint MUST
>>>> ensure that
>>>>>>>>> that interface has a TSG that is compatible with the TSG of
>>>>>>>> interface
>>>>>>>>> for the ingress LSP endpoint?
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> [Fatai] There are two cases for TSG issue. One is for ODU
>>>>>>>> service LSP
>>>>>>>>> (carrying non-ODU) creation, the second one is ODU FA-LSP
>>>>>>>> creation for
>>>>>>>>> carrying another lower ODU. For the first case, the TSG can be
>>>>>>>>> changeable segment by segment (link by link). For
>>>> example, when an
>>>>>>>>> ODU1 (to carry non-ODU) is being created over ODU3 link, the
>>>>>>>> TSG could
>>>>>>>>> be different link by link. For the second case, this is
>>>>>> what we are
>>>>>>>>> talking about with Lou; in this case, only end points and
>>>>>>>> penultimate
>>>>>>>>> node need to have the compatible TSG.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Also, it occurs to me that hierarchy is not only
>> unnecessary but
>>>>>>>>> counter-productive in signaling.  When one establishes an
>>>>>> ODU3, for
>>>>>>>>> example, that ODU3 may be used to instantiate multiple
>>>>>>>> hierarchies, so
>>>>>>>>> one does not want to specify a particular hierarchy.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> If one is establishing this ODU3 in order to eventually
>>>>>> establish an
>>>>>>>>> ODU0 LSP over an ODU2 LSP, then after the ODU3 is
>>>> established, the
>>>>>>>>> ODU2 would be signaled within the ODU3.  Again, since the
>>>>>> ODU2 might
>>>>>>>>> support multiple hierarchies, one does not want to specify a
>>>>>>>> particular hierarchy.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Once the OUD2 is established, the ODU0 is signaled.  Since
>>>>>>>> it does not
>>>>>>>>> support any further hierarchy, none is specified.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> [Fatai] Hierarchy information is necessary when bundling
>>>>>>>> link is used.
>>>>>>>>> For your example, ODU0->ODU2->ODU3, when creating ODU2
>>>> FA-LSP over
>>>>>>>>> ODU3 links, ODU2 layer should be aware of that it should
>>>>>> pick up the
>>>>>>>>> right component link that can support ODU0 muxing (so the
>>>>>>>>> hierarchy
>>>>>>>>> ODU0->ODU2 should be carried when creating ODU2 FA-LSP),
>>>>>>>>> ODU0->otherwise,
>>>>>>>>> this arbitrary
>>>>>>>>> ODU2 could be only support ODU1->ODU2, then ODU0 cannot
>>>> be carried
>>>>>>>>> over this ODU2 FA-LSP.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Thanks,
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> John
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Sent from my iPhone
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> -----Original Message-----
>>>>>>>>>
>>>>>>>>>> From: Fatai Zhang [mailto:zhangfatai@huawei.com]
>>>>>>>>>
>>>>>>>>>> Sent: Tuesday, July 10, 2012 11:25 PM
>>>>>>>>>
>>>>>>>>>> To: Lou Berger
>>>>>>>>>
>>>>>>>>>> Cc: ccamp@ietf.org; Khuzema Pithewan;
>>>>>>>>>> zhangguoying@mail.ritt.com.cn;
>>>>>>>>>
>>>>>>>>>> daniele.ceccarelli@ericsson.com; Linyi;
>>>>>>>>>> xuyunbin@mail.ritt.com.cn;
>>>>>>>>>
>>>>>>>>>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO);
>>>>>>>>>> diego.caviglia@ericsson.com;
>>>>>>>>>
>>>>>>>>>> Rajan Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO
>>>>>>>> (SERGIO); John E
>>>>>>>>>
>>>>>>>>>> Drake
>>>>>>>>>
>>>>>>>>>> Subject: : : Updates on OTN signaling draft
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> Hi Lou,
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> Let me repeat the requirement of this information.
>>>>>>>>>
>>>>>>>>>> When an ODU (e.g., ODU1) with one specific TSG (because of the
>>>>>>>>>> ingress
>>>>>>>>>
>>>>>>>>>> interface constraint) needs to be created over another
>>>> higher ODU
>>>>>>>>>
>>>>>>>>>> (e.g., ODU3 FA-LSP), the penultimate hop of this ODU3
>>>>>>>> FA-LSP needs to
>>>>>>>>>
>>>>>>>>>> be aware of which TSG should be picked up from the TE
>>>> link (ie.,
>>>>>>>>>> choose
>>>>>>>>>
>>>>>>>>>> the right component link which can support the client TSG), so
>>>>>>>>>> the
>>>>>>>>>
>>>>>>>>>> client TSG information (and hierarchy information) needs to be
>>>>>>>>>> conveyed
>>>>>>>>>
>>>>>>>>>> in the signaling to create the ODU FA-LSP.
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> The requirement has been discussed in the previous IETF
>>>> meetings,
>>>>>>>>>
>>>>>>>>>> please get more information from the presentation slides
>>>>>> of Taipei
>>>>>>>>>> and
>>>>>>>>>
>>>>>>>>>> Paris meetings.
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> Given that people understand the above requirment, let's
>>>>>>>> focus on the
>>>>>>>>>
>>>>>>>>>> potential solutions. In Taipei meeting, the authors compared
>>>>>>>>>> three
>>>>>>>>>
>>>>>>>>>> alternatives and discussed in the list:
>>>>>>>>>
>>>>>>>>>> (1) Introducing a new object: WG prefer to re-use the existing
>>>>>>>>>> things,
>>>>>>>>>
>>>>>>>>>> so the authors switched to (2).
>>>>>>>>>
>>>>>>>>>> (2) Extending GPID to carry TSG/PT information: Lou once
>>>>>> suggested
>>>>>>>>>> this
>>>>>>>>>
>>>>>>>>>> approach and the authors finally agreed on this because it is
>>>>>>>>>> needed
>>>>>>>>>
>>>>>>>>>> only for penultimate hop to select right link to egress.
>>>>>> Note that
>>>>>>>>>> TSG
>>>>>>>>>
>>>>>>>>>> isn't needed for loose ERO expansion.
>>>>>>>>>
>>>>>>>>>> (3) Extending Encoding Type: Encoding type is an end to end
>>>>>>>>>> constraint
>>>>>>>>>
>>>>>>>>>> (See RFC4328), so the authors think it is not the right place.
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> Do we need to poll how many people support which approach
>>>>>>>>>> perspectively
>>>>>>>>>
>>>>>>>>>> (or any other approach)?
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> Thanks
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> Fatai
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> -----ʼԭ-----
>>>>>>>>>
>>>>>>>>>> : Lou Berger [mailto:lberger@labn.net]
>>>>>>>>>
>>>>>>>>>> ʱ: 2012710 22:33
>>>>>>>>>
>>>>>>>>>> ռ: Fatai Zhang
>>>>>>>>>
>>>>>>>>>> : ccamp@ietf.org; Khuzema Pithewan;
>>>>>>>>>> zhangguoying@mail.ritt.com.cn;
>>>>>>>>>
>>>>>>>>>> daniele.ceccarelli@ericsson.com; Linyi;
>>>>>>>>>> xuyunbin@mail.ritt.com.cn;
>>>>>>>>>
>>>>>>>>>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO);
>>>>>>>>>> diego.caviglia@ericsson.com;
>>>>>>>>>
>>>>>>>>>> Rajan Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO
>>>>>>>> (SERGIO); John E
>>>>>>>>>
>>>>>>>>>> Drake
>>>>>>>>>
>>>>>>>>>> : Re: : Updates on OTN signaling draft
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> Fatai,
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> See below for in-line responses.
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> On 7/10/2012 5:34 AM, Fatai Zhang wrote:
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>> Hi Lou,
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>> Please see in-line below.
>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>> Note that lets use HTML format to make the mails readable, J
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>> Thanks
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>> Fatai
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>> -----ʼԭ-----
>>>>>>>>>
>>>>>>>>>>> : Lou Berger [mailto:lberger@labn.net]
>>>>>>>>>
>>>>>>>>>>> ʱ: 2012710 5:27
>>>>>>>>>
>>>>>>>>>>> ռ: Fatai Zhang
>>>>>>>>>
>>>>>>>>>>> : ccamp@ietf.org; Khuzema Pithewan;
>>>>>>>>>
>>>>>>>>>> zhangguoying@mail.ritt.com.cn;
>>>>>>>>>
>>>>>>>>>>> daniele.ceccarelli@ericsson.com; Linyi;
>>>>>> xuyunbin@mail.ritt.com.cn;
>>>>>>>>>
>>>>>>>>>>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO);
>>>>>>>>>
>>>>>>>>>>> diego.caviglia@ericsson.com; Rajan Rao;
>>>>>>>>>>> IBryskin@advaoptical.com;
>>>>>>>>>
>>>>>>>>>>> BELOTTI, SERGIO (SERGIO); John E Drake
>>>>>>>>>
>>>>>>>>>>> : Re: Updates on OTN signaling draft
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>> [Woops, this was stuck in my outbox from last week!]
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>> Fatai/Authors,
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>          G-PID is a fine place to carry information about the
>>>>>>>>>
>>>>>>>>>> format/type of information carried by an LSP. An important
>>>>>>>>>
>>>>>>>>>> consideration is that G-PID information is not used as
>>>>>> part of path
>>>>>>>>>
>>>>>>>>>> computation, and is not used by transit nodes except in
>>>>>> the case of
>>>>>>>>>> the
>>>>>>>>>
>>>>>>>>>> penultimate hop (for PHP).
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>> When we last discussed this, some authors stated that TSG was
>>>>>>>>>>> needed
>>>>>>>>>
>>>>>>>>>> as part of path computation, including at transit nodes
>>>>>> doing loose
>>>>>>>>>> ERO
>>>>>>>>>
>>>>>>>>>> expansion.  Hence the discussed inclusion of TSG in LSP
>>>>>>>> Encoding Type.
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>> If the authors are now willing to state that TSG isn't needed
>>>>>>>>>>> for
>>>>>>>>>
>>>>>>>>>> loose ERO expansion, then G-PID seems the perfect choice.
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>> Do all the authors agree with such this statement
>> (and change)?
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>> [Authors] After lots of discussion, the authors came
>>>> to conclude
>>>>>>>>>>> that
>>>>>>>>>
>>>>>>>>>> it is needed only for penultimate hop to select right link to
>>>>>>>>>> egress
>>>>>>>>>
>>>>>>>>>> and hence the change.
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> Can one of the authors summarize the discussion for the WG?
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> The authors are asking for WG support, so should provide the
>>>>>>>>>> technical
>>>>>>>>>
>>>>>>>>>> basis for the position. Once the requirements are
>>>>>>>> articulated, the WG
>>>>>>>>>
>>>>>>>>>> can be in a position to judge/agree/disagree with the proposed
>>>>>>>>>
>>>>>>>>>> solution.
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>> As I mentioned on the on the conference call, and my
>>>>>> mail of 6/18,
>>>>>>>>>
>>>>>>>>>> the use of G-PID as part of a path selection is really part of
>>>>>>>>>> the
>>>>>>>>>
>>>>>>>>>> general issue seen in MLN. On the call we agreed that
>>>> non-OTN MLN
>>>>>>>>>> will
>>>>>>>>>
>>>>>>>>>> be handled as the standard MLN case, without OTN-specific
>>>>>> additions.
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>> Unless I'm misreading your mail, you are *not* proposing
>>>>>> to treat
>>>>>>>>>>> the
>>>>>>>>>
>>>>>>>>>> intra-OTN (hierarchy) case as generic MLN but rather a
>>>>>> special case
>>>>>>>>>> by
>>>>>>>>>
>>>>>>>>>> bundling some upper OTN hierarchy information as part
>>>> of a lower
>>>>>>>>>> H-LSPs
>>>>>>>>>
>>>>>>>>>> (in Hierarchy TLV).
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>> Correct?
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>> [Authors] Correct, it is the latter one.
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>> If my reading is correct, then I think the authors need
>>>>>> to discuss
>>>>>>>>>
>>>>>>>>>> their technical reasons for their "preference" and why the
>>>>>>>> previously
>>>>>>>>>
>>>>>>>>>> reached compromise position (as articulated in my mail of
>>>>>> 6/18) is
>>>>>>>>>> not
>>>>>>>>>
>>>>>>>>>> acceptable.
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>> [Authors] After checking after conf call, the authors
>>>> think that
>>>>>>>>>
>>>>>>>>>> Encoding type is an end to end constraint (See RFC4328)
>>>> and GPID
>>>>>>>>>> should
>>>>>>>>>
>>>>>>>>>> be the right place as you mention above.
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> This goes to requirements, in today's GMPLS G-PID is not
>>>>>>>> part of path
>>>>>>>>>
>>>>>>>>>> computation except in the context of MRN/MLN.
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>> Speaking only as an individual contributor, given the
>>>>>>>> difficulty in
>>>>>>>>>
>>>>>>>>>> reaching a consensus on how to treat intra-OTN
>> (hierarchy) as a
>>>>>>>>>> special
>>>>>>>>>
>>>>>>>>>> case, I personally now prefer to avoid any technology specific
>>>>>>>>>> co-
>>>>>>>>>
>>>>>>>>>> mingling of layers and to address the intra-OTN
>>>> (hierarchy) case
>>>>>>>>>> via
>>>>>>>>>
>>>>>>>>>> generic MLN (or other generic mechanisms).  I think
>>>> this position
>>>>>>>>>> would
>>>>>>>>>
>>>>>>>>>> translate to removing the Hierarchy TLV from the OTN signaling
>>>>>>>>>> draft
>>>>>>>>>
>>>>>>>>>> and spinning up a new draft to cover (OTN and generic)
>>>>>>>>>> intra-technology
>>>>>>>>>
>>>>>>>>>> MLN.
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>> [Authors] The authors would like to focus on OTN specific by
>>>>>>>>>>> removing
>>>>>>>>>
>>>>>>>>>> Encoding type and Switching type in the Hierarchy
>>>> TLV(but keeping
>>>>>>>>>
>>>>>>>>>> Signal Type). It is OK to have a new draft to cover generic
>>>>>>>>>> intra-
>>>>>>>>>
>>>>>>>>>> technology MLN.
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> How is the revised TLV to be used?  Do the authors have a
>>>>>>>>>> specific
>>>>>>>>>
>>>>>>>>>> proposal that covers "generic intra-technology MLN"?
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> Lou
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>> Lou
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>> On 7/5/2012 9:25 PM, Fatai Zhang wrote:
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>> Hi all,
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>> We are updating OTN signaling draft. Since we had lots of
>>>>>>>>>>>> discussion
>>>>>>>>>
>>>>>>>>>>>> on
>>>>>>>>>
>>>>>>>>>>> the TSG stuff in the list, let's converge on the solution.
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>> Based on the previous discussion between Lou and co-authors,
>>>>>>>>>>>> the
>>>>>>>>>
>>>>>>>>>>> authors prefer the following changes:
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>> (1) Extending GPID to carry TSG in signaling, since its
>>>>>>>> purpose in
>>>>>>>>>
>>>>>>>>>>> signaling is to ensure that endpoints of the LSP being
>>>> signaled
>>>>>>>>>>> have
>>>>>>>>>
>>>>>>>>>> a
>>>>>>>>>
>>>>>>>>>>> consistent view of the TSG to be offered to its
>> clients and LSP
>>>>>>>>>
>>>>>>>>>>> endpoint consistency is the purpose for which the GPID
>>>>>>>> was designed.
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>> (2)Extending LSPA to carry hierarchy information
>> (ie., Type=2
>>>>>>>>>
>>>>>>>>>>>> Hierarchy
>>>>>>>>>
>>>>>>>>>>> TLV).
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>> Any comments?
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>> Thanks
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>>> Fatai
>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>
>>>>
>>

From lberger@labn.net  Mon Jul 16 09:26:49 2012
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Subject: [CCAMP] Request to WG authors/editors (for Vancouver)
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Authors of WG documents,
	As with the last meeting: Please plan to review (present) any changes
that have been recently made to your draft, as well as any plans for, or
open issues with the draft at the upcoming meeting.  If there have been
no recent changes, please present open issues and your plans for moving
the draft forward. If you have not already done so, please respond to
Daniele's agenda request mail to schedule your presentation time.

If you don't need a full slot for the draft, please be prepared to say a
few words on document status/progress/planned revisions in our first
session.  Alternatively, you can send this information to the WG mail
list prior to the WG meeting.

The agenda has us meeting:

WEDNESDAY, August 1, 2012 	0900-1130 	Morning Session I
THURSDAY, August 2, 2012 	1300-1500 	Afternoon Session I

Much thanks.
Lou and Deborah

From internet-drafts@ietf.org  Mon Jul 16 12:04:54 2012
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Subject: [CCAMP] I-D Action: draft-ietf-ccamp-wson-signal-compatibility-ospf-09.txt
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A New Internet-Draft is available from the on-line Internet-Drafts director=
ies.
 This draft is a work item of the Common Control and Measurement Plane Work=
ing Group of the IETF.

	Title           : GMPLS OSPF Enhancement for Signal and Network Element Co=
mpatibility for Wavelength Switched Optical Networks
	Author(s)       : Young Lee
                          Greg M. Bernstein
	Filename        : draft-ietf-ccamp-wson-signal-compatibility-ospf-09.txt
	Pages           : 13
	Date            : 2012-07-16

Abstract:
   This document provides GMPLS OSPF routing enhancements to support
   signal compatibility constraints associated with WSON network
   elements. These routing enhancements are required in common optical
   or hybrid electro-optical networks where not all of the optical
   signals in the network are compatible with all network elements
   participating in the network.

   This compatibility constraint model is applicable to common optical
   or hybrid electro optical systems such as OEO switches,
   regenerators, and wavelength converters since such systems can be
   limited to processing only certain types of WSON signals.



The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-ccamp-wson-signal-compatibility=
-ospf

There's also a htmlized version available at:
http://tools.ietf.org/html/draft-ietf-ccamp-wson-signal-compatibility-ospf-=
09

A diff from previous version is available at:
http://tools.ietf.org/rfcdiff?url2=3Ddraft-ietf-ccamp-wson-signal-compatibi=
lity-ospf-09


Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/


From leeyoung@huawei.com  Mon Jul 16 12:16:23 2012
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From: Leeyoung <leeyoung@huawei.com>
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Subject: Re: [CCAMP] I-D Action:	draft-ietf-ccamp-wson-signal-compatibility-ospf-09.txt
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Hi,

This draft is updated to include ISCD encoding which is a specific use of O=
SPF in WSON context. We introduced a new Switching Capability for WSON =3D =
WSON-LSC. In addition to that, we added the technology specific part of the=
 WSON ISCD (SCSI) to include Bandwidth TLV.=20

Comments and discussions are welcome. Thanks.

Young

-----Original Message-----
From: ccamp-bounces@ietf.org [mailto:ccamp-bounces@ietf.org] On Behalf Of i=
nternet-drafts@ietf.org
Sent: Monday, July 16, 2012 2:05 PM
To: i-d-announce@ietf.org
Cc: ccamp@ietf.org
Subject: [CCAMP] I-D Action: draft-ietf-ccamp-wson-signal-compatibility-osp=
f-09.txt


A New Internet-Draft is available from the on-line Internet-Drafts director=
ies.
 This draft is a work item of the Common Control and Measurement Plane Work=
ing Group of the IETF.

	Title           : GMPLS OSPF Enhancement for Signal and Network Element Co=
mpatibility for Wavelength Switched Optical Networks
	Author(s)       : Young Lee
                          Greg M. Bernstein
	Filename        : draft-ietf-ccamp-wson-signal-compatibility-ospf-09.txt
	Pages           : 13
	Date            : 2012-07-16

Abstract:
   This document provides GMPLS OSPF routing enhancements to support
   signal compatibility constraints associated with WSON network
   elements. These routing enhancements are required in common optical
   or hybrid electro-optical networks where not all of the optical
   signals in the network are compatible with all network elements
   participating in the network.

   This compatibility constraint model is applicable to common optical
   or hybrid electro optical systems such as OEO switches,
   regenerators, and wavelength converters since such systems can be
   limited to processing only certain types of WSON signals.



The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-ccamp-wson-signal-compatibility=
-ospf

There's also a htmlized version available at:
http://tools.ietf.org/html/draft-ietf-ccamp-wson-signal-compatibility-ospf-=
09

A diff from previous version is available at:
http://tools.ietf.org/rfcdiff?url2=3Ddraft-ietf-ccamp-wson-signal-compatibi=
lity-ospf-09


Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/

_______________________________________________
CCAMP mailing list
CCAMP@ietf.org
https://www.ietf.org/mailman/listinfo/ccamp

From zhangfatai@huawei.com  Mon Jul 16 19:03:33 2012
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<div class=3D"WordSection1">
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Hi Lou,<o:p></o:p></span></p=
>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">[snip]<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Let's understand where we ar=
e, :-), <o:p>
</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">If my following understandin=
g is not correct, please list some items that we need to get the consensus.
<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; Intra-OTN is missing, w=
rt actual MRN/MLN, the capability of signlaing the TSG, while Inter-OTN is =
missing also the Adaptation between client and server layers (e.g. Bit-sync=
 vs Byte-sync mapping, X.86 vs GFP etc)<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; [snip]<o:p></o:p></span=
></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">fair enough.<o:p></o:p></spa=
n></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US" style=3D"color:#002060">[Fat=
ai] Did you mean (or agree) that intra-OTN is missing the capability of sig=
naling the TSG? Should Inter-OTN be generic MRN/MLN?<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; It appears we came to t=
he conclusion that a general &quot;intra switch cap&quot; work is needed (n=
on OTN specific).<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; <o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">&gt; My proposal was to incl=
ude the problem statement in the bcg draft (so to make it cover both the in=
ter and intra cases) and then work on a different encoding draft (I'm not s=
ure the OTN signaling is the right place
 for general intra switch cap encoding. Maybe a pointer is more appropriate=
.<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Sounds workable to me (and a=
ligned with what John was saying).&nbsp; Now let's see if others disagree o=
r if we have consensus!<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US" style=3D"color:#002060">[Fat=
ai] I understood Daniele's proposal. However, focusing on OTN signaling dra=
ft, did you mean that this draft (OTN signaling) should focus on OTN specif=
ic (intra-OTN) as what it is or this draft
 should remove TSG or hierachy information or bothe of them (ie., GPID exte=
nsion for TSG and hierachy inforamtion in LSPA)?
<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Thanks<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">Fatai<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">-----</span><span style=3D"f=
ont-family:=CB=CE=CC=E5">=D3=CA=BC=FE=D4=AD=BC=FE</span><span lang=3D"EN-US=
">-----<br>
</span><span style=3D"font-family:=CB=CE=CC=E5">=B7=A2=BC=FE=C8=CB</span><s=
pan lang=3D"EN-US">: Lou Berger [mailto:lberger@labn.net]
<br>
</span><span style=3D"font-family:=CB=CE=CC=E5">=B7=A2=CB=CD=CA=B1=BC=E4</s=
pan><span lang=3D"EN-US">: 2012</span><span style=3D"font-family:=CB=CE=CC=
=E5">=C4=EA</span><span lang=3D"EN-US">7</span><span style=3D"font-family:=
=CB=CE=CC=E5">=D4=C2</span><span lang=3D"EN-US">16</span><span style=3D"fon=
t-family:=CB=CE=CC=E5">=C8=D5</span><span lang=3D"EN-US">
 20:47<br>
</span><span style=3D"font-family:=CB=CE=CC=E5">=CA=D5=BC=FE=C8=CB</span><s=
pan lang=3D"EN-US">: Daniele Ceccarelli<br>
</span><span style=3D"font-family:=CB=CE=CC=E5">=B3=AD=CB=CD</span><span la=
ng=3D"EN-US">: Fatai Zhang; John E Drake; ccamp@ietf.org; Khuzema Pithewan;=
 zhangguoying@mail.ritt.com.cn; Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, P=
IETRO VITTORIO (PIETRO VITTORIO); Diego Caviglia; Rajan
 Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO)<br>
</span><span style=3D"font-family:=CB=CE=CC=E5">=D6=F7=CC=E2</span><span la=
ng=3D"EN-US">: Re: </span><span style=3D"font-family:=CB=CE=CC=E5">=B4=F0=
=B8=B4</span><span lang=3D"EN-US">:
</span><span style=3D"font-family:=CB=CE=CC=E5">=B4=F0=B8=B4</span><span la=
ng=3D"EN-US">: Updates on OTN signaling draft<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US">[snip]<o:p></o:p></span></p>
<p class=3D"MsoPlainText"><span lang=3D"EN-US" style=3D"color:black"><o:p>&=
nbsp;</o:p></span></p>
</div>
</body>
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From: John E Drake <jdrake@juniper.net>
To: Fatai Zhang <zhangfatai@huawei.com>, Lou Berger <lberger@labn.net>, Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>
Date: Tue, 17 Jul 2012 07:17:45 -0700
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</o:shapelayout></xml><![endif]--></head><body lang=3DEN-US link=3Dblue vli=
nk=3Dpurple style=3D'text-justify-trim:punctuation'><div class=3DWordSectio=
n1><p class=3DMsoNormal><span style=3D'font-size:11.0pt;color:#1F497D'>Fata=
i,<o:p></o:p></span></p><p class=3DMsoNormal><span style=3D'font-size:11.0p=
t;color:#1F497D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span sty=
le=3D'font-size:11.0pt;color:#1F497D'>To recap my previous emails:<o:p></o:=
p></span></p><p class=3DMsoNormal><span style=3D'font-size:11.0pt;color:#1F=
497D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoListParagraph style=3D'text=
-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style=3D=
'font-size:11.0pt;color:#1F497D'><span style=3D'mso-list:Ignore'>1)<span st=
yle=3D'font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>=
</span></span><![endif]><span style=3D'font-size:11.0pt;color:#1F497D'>TSG =
info needs to be carried in signaling in the GPID<o:p></o:p></span></p><p c=
lass=3DMsoListParagraph style=3D'text-indent:-.25in;mso-list:l0 level1 lfo1=
'><![if !supportLists]><span style=3D'font-size:11.0pt;color:#1F497D'><span=
 style=3D'mso-list:Ignore'>2)<span style=3D'font:7.0pt "Times New Roman"'>&=
nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></span><![endif]><span style=3D=
'font-size:11.0pt;color:#1F497D'>Any node that performs CSPF and selects th=
e egress interface for an LSP needs to ensure that interface=A1=AFs TSG is =
compatible with the ingress interface=A1=AFs TSG as indicated in signaling =
(the GPID)<o:p></o:p></span></p><p class=3DMsoListParagraph style=3D'text-i=
ndent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style=3D'f=
ont-size:11.0pt;color:#1F497D'><span style=3D'mso-list:Ignore'>3)<span styl=
e=3D'font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></=
span></span><![endif]><span style=3D'font-size:11.0pt;color:#1F497D'>Signal=
ing should not carry hierarchy info because signaling only instantiates a s=
ingle ODUj<o:p></o:p></span></p><p class=3DMsoListParagraph style=3D'text-i=
ndent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style=3D'f=
ont-size:11.0pt;color:#1F497D'><span style=3D'mso-list:Ignore'>4)<span styl=
e=3D'font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></=
span></span><![endif]><span style=3D'font-size:11.0pt;color:#1F497D'>The in=
gress will sequentially signal multiple ODUj LSPs, each with a different va=
lue of j, in order to instantiate an OTN hierarchy between a given ingress/=
egress pair<o:p></o:p></span></p><p class=3DMsoNormal><span style=3D'font-s=
ize:11.0pt;color:#1F497D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal>=
<span style=3D'font-size:11.0pt;color:#1F497D'>As an aside, just over a yea=
r ago, we had an extended discussion of this topic in which I argued in sup=
port of the Infinera approach of using a single signaling message to instan=
tiate any necessary intermediate hierarchy in support of a given client ODU=
j, and nobody bought my arguments..<o:p></o:p></span></p><p class=3DMsoNorm=
al><span style=3D'font-size:11.0pt;color:#1F497D'><o:p>&nbsp;</o:p></span><=
/p><p class=3DMsoNormal><span style=3D'font-size:11.0pt;color:#1F497D'>Than=
ks,<o:p></o:p></span></p><p class=3DMsoNormal><span style=3D'font-size:11.0=
pt;color:#1F497D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span st=
yle=3D'font-size:11.0pt;color:#1F497D'>John &nbsp;<o:p></o:p></span></p><p =
class=3DMsoNormal><span style=3D'font-size:11.0pt;color:#1F497D'><o:p>&nbsp=
;</o:p></span></p><div><p class=3DMsoNormal align=3Dleft style=3D'text-alig=
n:left'><span style=3D'font-size:11.0pt;color:#1F497D'>Sent from my iPhone<=
o:p></o:p></span></p></div><p class=3DMsoNormal><span style=3D'font-size:11=
.0pt;color:#1F497D'><o:p>&nbsp;</o:p></span></p><div style=3D'border:none;b=
order-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'><div><div style=3D'b=
order:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p cla=
ss=3DMsoNormal align=3Dleft style=3D'text-align:left'><b><span style=3D'fon=
t-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span styl=
e=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Fatai Zhang [mail=
to:zhangfatai@huawei.com] <br><b>Sent:</b> Monday, July 16, 2012 7:03 PM<br=
><b>To:</b> Lou Berger; Daniele Ceccarelli<br><b>Cc:</b> John E Drake; ccam=
p@ietf.org; Khuzema Pithewan; zhangguoying@mail.ritt.com.cn; Linyi; xuyunbi=
n@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO VITTORIO); Diego Cavigl=
ia; Rajan Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO); Fatai Zh=
ang<br><b>Subject:</b> </span><span lang=3DZH-CN style=3D'font-size:10.0pt;=
font-family:SimSun'>=B4=F0=B8=B4</span><span style=3D'font-size:10.0pt;font=
-family:"Tahoma","sans-serif"'>: </span><span lang=3DZH-CN style=3D'font-si=
ze:10.0pt;font-family:SimSun'>=B4=F0=B8=B4</span><span style=3D'font-size:1=
0.0pt;font-family:"Tahoma","sans-serif"'>: </span><span lang=3DZH-CN style=
=3D'font-size:10.0pt;font-family:SimSun'>=B4=F0=B8=B4</span><span style=3D'=
font-size:10.0pt;font-family:"Tahoma","sans-serif"'>: Updates on OTN signal=
ing draft<o:p></o:p></span></p></div></div><p class=3DMsoNormal align=3Dlef=
t style=3D'text-align:left'><o:p>&nbsp;</o:p></p><p class=3DMsoPlainText>Hi=
 Lou,<o:p></o:p></p><p class=3DMsoPlainText><o:p>&nbsp;</o:p></p><p class=
=3DMsoPlainText>[snip]<o:p></o:p></p><p class=3DMsoPlainText><o:p>&nbsp;</o=
:p></p><p class=3DMsoPlainText>Let's understand where we are, :-), <o:p></o=
:p></p><p class=3DMsoPlainText><o:p>&nbsp;</o:p></p><p class=3DMsoPlainText=
>If my following understanding is not correct, please list some items that =
we need to get the consensus. <o:p></o:p></p><p class=3DMsoPlainText><o:p>&=
nbsp;</o:p></p><p class=3DMsoPlainText>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D<o:p></o:p></p><p class=3DMsoPlainText><o:p>&nbsp;</o:=
p></p><p class=3DMsoPlainText>&gt; Intra-OTN is missing, wrt actual MRN/MLN=
, the capability of signlaing the TSG, while Inter-OTN is missing also the =
Adaptation between client and server layers (e.g. Bit-sync vs Byte-sync map=
ping, X.86 vs GFP etc)<o:p></o:p></p><p class=3DMsoPlainText>&gt; <o:p></o:=
p></p><p class=3DMsoPlainText>&gt; [snip]<o:p></o:p></p><p class=3DMsoPlain=
Text><o:p>&nbsp;</o:p></p><p class=3DMsoPlainText>fair enough.<o:p></o:p></=
p><p class=3DMsoPlainText><o:p>&nbsp;</o:p></p><p class=3DMsoPlainText><spa=
n style=3D'color:#002060'>[Fatai] Did you mean (or agree) that intra-OTN is=
 missing the capability of signaling the TSG? Should Inter-OTN be generic M=
RN/MLN?<o:p></o:p></span></p><p class=3DMsoPlainText><o:p>&nbsp;</o:p></p><=
p class=3DMsoPlainText>&gt; It appears we came to the conclusion that a gen=
eral &quot;intra switch cap&quot; work is needed (non OTN specific).<o:p></=
o:p></p><p class=3DMsoPlainText>&gt; <o:p></o:p></p><p class=3DMsoPlainText=
>&gt; My proposal was to include the problem statement in the bcg draft (so=
 to make it cover both the inter and intra cases) and then work on a differ=
ent encoding draft (I'm not sure the OTN signaling is the right place for g=
eneral intra switch cap encoding. Maybe a pointer is more appropriate.<o:p>=
</o:p></p><p class=3DMsoPlainText><o:p>&nbsp;</o:p></p><p class=3DMsoPlainT=
ext>Sounds workable to me (and aligned with what John was saying).&nbsp; No=
w let's see if others disagree or if we have consensus!<o:p></o:p></p><p cl=
ass=3DMsoPlainText><o:p>&nbsp;</o:p></p><p class=3DMsoPlainText><span style=
=3D'color:#002060'>[Fatai] I understood Daniele's proposal. However, focusi=
ng on OTN signaling draft, did you mean that this draft (OTN signaling) sho=
uld focus on OTN specific (intra-OTN) as what it is or this draft should re=
move TSG or hierachy information or bothe of them (ie., GPID extension for =
TSG and hierachy inforamtion in LSPA)? <o:p></o:p></span></p><p class=3DMso=
PlainText><o:p>&nbsp;</o:p></p><p class=3DMsoPlainText><o:p>&nbsp;</o:p></p=
><p class=3DMsoPlainText>Thanks<o:p></o:p></p><p class=3DMsoPlainText><o:p>=
&nbsp;</o:p></p><p class=3DMsoPlainText>Fatai<o:p></o:p></p><p class=3DMsoP=
lainText><o:p>&nbsp;</o:p></p><p class=3DMsoPlainText>-----<span lang=3DZH-=
CN style=3D'font-family:SimSun'>=D3=CA=BC=FE=D4=AD=BC=FE</span>-----<br><sp=
an lang=3DZH-CN style=3D'font-family:SimSun'>=B7=A2=BC=FE=C8=CB</span>: Lou=
 Berger [<a href=3D"mailto:lberger@labn.net">mailto:lberger@labn.net</a>] <=
br><span lang=3DZH-CN style=3D'font-family:SimSun'>=B7=A2=CB=CD=CA=B1=BC=E4=
</span>: 2012<span lang=3DZH-CN style=3D'font-family:SimSun'>=C4=EA</span>7=
<span lang=3DZH-CN style=3D'font-family:SimSun'>=D4=C2</span>16<span lang=
=3DZH-CN style=3D'font-family:SimSun'>=C8=D5</span> 20:47<br><span lang=3DZ=
H-CN style=3D'font-family:SimSun'>=CA=D5=BC=FE=C8=CB</span>: Daniele Ceccar=
elli<br><span lang=3DZH-CN style=3D'font-family:SimSun'>=B3=AD=CB=CD</span>=
: Fatai Zhang; John E Drake; <a href=3D"mailto:ccamp@ietf.org">ccamp@ietf.o=
rg</a>; Khuzema Pithewan; <a href=3D"mailto:zhangguoying@mail.ritt.com.cn">=
zhangguoying@mail.ritt.com.cn</a>; Linyi; <a href=3D"mailto:xuyunbin@mail.r=
itt.com.cn">xuyunbin@mail.ritt.com.cn</a>; GRANDI, PIETRO VITTORIO (PIETRO =
VITTORIO); Diego Caviglia; Rajan Rao; <a href=3D"mailto:IBryskin@advaoptica=
l.com">IBryskin@advaoptical.com</a>; BELOTTI, SERGIO (SERGIO)<br><span lang=
=3DZH-CN style=3D'font-family:SimSun'>=D6=F7=CC=E2</span>: Re: <span lang=
=3DZH-CN style=3D'font-family:SimSun'>=B4=F0=B8=B4</span>: <span lang=3DZH-=
CN style=3D'font-family:SimSun'>=B4=F0=B8=B4</span>: Updates on OTN signali=
ng draft<o:p></o:p></p><p class=3DMsoPlainText><o:p>&nbsp;</o:p></p><p clas=
s=3DMsoPlainText>[snip]<o:p></o:p></p><p class=3DMsoPlainText><span style=
=3D'color:black'><o:p>&nbsp;</o:p></span></p></div></div></body></html>=

--_000_5E893DB832F57341992548CDBB333163A5A85B5D37EMBX01HQjnprn_--

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Date: Tue, 17 Jul 2012 12:30:41 -0400
From: Lou Berger <lberger@labn.net>
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To: Fatai Zhang <zhangfatai@huawei.com>
References: <F82A4B6D50F9464B8EBA55651F541CF82CC528E5@SZXEML520-MBX.china.huawei.com> <F82A4B6D50F9464B8EBA55651F541CF82CC559EF@SZXEML520-MBX.china.huawei.com> <4FFC3D35.5010801@labn.net> <F82A4B6D50F9464B8EBA55651F541CF82CC55C8A@SZXEML520-MBX.china.huawei.com> <5E893DB832F57341992548CDBB333163A5A82A4DE9@EMBX01-HQ.jnpr.net> <F82A4B6D50F9464B8EBA55651F541CF82CC560C6@SZXEML520-MBX.china.huawei.com> <4FFEDF8B.90003@labn.net> <F82A4B6D50F9464B8EBA55651F541CF82CC57747@SZXEML520-MBX.china.huawei.com> <B5630A95D803744A81C51AD4040A6DAA22AE6FFEE4@ESESSCMS0360.eemea.ericsson.se> <500019A7.7060203@labn.net> <B5630A95D803744A81C51AD4040A6DAA22AE6FFF1B@ESESSCMS0360.eemea.ericsson.se> <5000304B.3080007@labn.net> <B5630A95D803744A81C51AD4040A6DAA22AE6FFFE2@ESESSCMS0360.eemea.ericsson.se> <50003B93.7060500@labn.net> <B5630A95D803744A81C51AD4040A6DAA22AE70032C@ESESSCMS0360.eemea.ericsson.se> <50040D47.7000209@labn.net> <F82A4B6D50F9464B8EBA55651F541CF82CC582C7@SZXEML520-MBX.china.huawei.com>
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Cc: "zhangguoying@mail.ritt.com.cn" <zhangguoying@mail.ritt.com.cn>, "ccamp@ietf.org" <ccamp@ietf.org>, Linyi <yi.lin@huawei.com>
Subject: Re: [CCAMP] =?gb2312?b?tPC4tDogtPC4tDogtPC4tDogVXBkYXRlcyBvbiBPVE4g?= =?gb2312?b?c2lnbmFsaW5nIGRyYWZ0?=
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Fatai,
	While you addressed your mail to me, it looks like your questions are
really for Daniele. I assume that he'll respond.

Lou

On 7/16/2012 10:02 PM, Fatai Zhang wrote:
> 
> 
> Hi Lou,
> 
>  
> 
> [snip]
> 
>  
> 
> Let's understand where we are, :-),
> 
>  
> 
> If my following understanding is not correct, please list some items
> that we need to get the consensus.
> 
>  
> 
> =======================================================================================================================
> 
> 
>  
> 
>> Intra-OTN is missing, wrt actual MRN/MLN, the capability of signlaing
> the TSG, while Inter-OTN is missing also the Adaptation between client
> and server layers (e.g. Bit-sync vs Byte-sync mapping, X.86 vs GFP etc)
> 
>>
> 
>> [snip]
> 
>  
> 
> fair enough.
> 
>  
> 
> [Fatai] Did you mean (or agree) that intra-OTN is missing the capability
> of signaling the TSG? Should Inter-OTN be generic MRN/MLN?
> 
>  
> 
>> It appears we came to the conclusion that a general "intra switch cap"
> work is needed (non OTN specific).
> 
>>
> 
>> My proposal was to include the problem statement in the bcg draft (so
> to make it cover both the inter and intra cases) and then work on a
> different encoding draft (I'm not sure the OTN signaling is the right
> place for general intra switch cap encoding. Maybe a pointer is more
> appropriate.
> 
>  
> 
> Sounds workable to me (and aligned with what John was saying).  Now
> let's see if others disagree or if we have consensus!
> 
>  
> 
> [Fatai] I understood Daniele's proposal. However, focusing on OTN
> signaling draft, did you mean that this draft (OTN signaling) should
> focus on OTN specific (intra-OTN) as what it is or this draft should
> remove TSG or hierachy information or bothe of them (ie., GPID extension
> for TSG and hierachy inforamtion in LSPA)?
> 
>  
> 
>  
> 
> Thanks
> 
>  
> 
> Fatai
> 
>  
> 
> -----ʼԭ-----
> : Lou Berger [mailto:lberger@labn.net]
> ʱ: 2012716 20:47
> ռ: Daniele Ceccarelli
> : Fatai Zhang; John E Drake; ccamp@ietf.org; Khuzema Pithewan;
> zhangguoying@mail.ritt.com.cn; Linyi; xuyunbin@mail.ritt.com.cn; GRANDI,
> PIETRO VITTORIO (PIETRO VITTORIO); Diego Caviglia; Rajan Rao;
> IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO)
> : Re: : : Updates on OTN signaling draft
> 
>  
> 
> [snip]
> 
>  
> 

From daniele.ceccarelli@ericsson.com  Wed Jul 18 03:29:14 2012
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From: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>
To: John E Drake <jdrake@juniper.net>, Fatai Zhang <zhangfatai@huawei.com>, Lou Berger <lberger@labn.net>
Date: Wed, 18 Jul 2012 12:29:59 +0200
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From lberger@labn.net  Wed Jul 18 05:20:01 2012
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Date: Wed, 18 Jul 2012 08:20:43 -0400
From: Lou Berger <lberger@labn.net>
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Daniele,
	Please see below.

On 7/18/2012 6:29 AM, Daniele Ceccarelli wrote:
> Hi John,
>  
> partially agree. I think the hierarchy is still needed for those
> cases in which 3 or more layer are being involved, in particular when
> the penultimate node, performing the choice of the FA, receives a
> signalling message of layer 2, needs to choose the FA at layer 3 and
> is not aware of layer 1. 

So why is this any different than the normal MRN/MLN case?

> Let's try to make an example (switched to
> plain text for the drawing):

for example change:
ODU1-LSP --> MPLS (TE/TP) LSP
ODU2-LSP --> Ethernet LSP
ODU3-LSP --> Lambda LSP

> 
>                                  ODU1-LSP
>            .....................................................
>            |                                                   | 
>            |                           ODU2-H-LSP              | 
>            |            +======================================+
>            |            |                                      |
>            |            |                                      |
>            |            |                   ODU3-H-LSP         |
>            |            |            |-------------------------|
>            |            |            |                         |
>         +--+--+      +-----+      +--+--+      +---+-+      +-----+
>         |     |      |     |      |     |      |     |      |     |
>         |  A  +------+  B  +------+  C  +------+  D  |------+  E  |
>         |     |      |     |      |     |      |     |      |     |
>         +-----+      +-----+      +-----+      +-----+      +-----+
>  
>  
> The LSP being signaled (ODUj), from A to E is an ODU1 (called layer 1
> above). B receives a path message related to the ODU1 and starts a
> signaling for an ODU2. C receives the ODU2 path message whose
> destination is E and needs to "choose among a set of"/"request the
> set up of" an ODU3 H-LSP from itself to E (loose ERO used). The only
> thing that C knows is that the interface on E must be able to perform
> an ODU2->ODU3 demuxing to extract the client traffic from the ODU2.
> 
> This is not correct, the demuxing capability required on the
> interface on E is ODU1->ODU2->ODU3 and the only way to let C know it,
> is introducing the hierarchy in signaling.
> 
> I think this is quite a corner case, more academic speculation than
> real case, but if there is a 0,00001% possibility it can happen, we
> should cover the case.

Generally we/GMPLS has used crankback to handle odd-ball corner cases
rather than complicating/optimizing the common case for the most complex
cases.  Is there a reason not to look to crankback for this extremely
rare case?

Thanks,
Lou

> 
> Please note that the problem does not exist using a strict ERO (which
> i wuold suggest :-)
> 
> Thanks,
> Daniele
>  
>  
> 
> 
> ________________________________
> 
> 	From: John E Drake [mailto:jdrake@juniper.net] 
> 	Sent: marted 17 luglio 2012 16.18
> 	To: Fatai Zhang; Lou Berger; Daniele Ceccarelli
> 	Cc: ccamp@ietf.org; Khuzema Pithewan; zhangguoying@mail.ritt.com.cn; Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO VITTORIO); Diego Caviglia; Rajan Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO)
> 	Subject: RE: : : Updates on OTN signaling draft
> 	
> 	
> 
> 	Fatai,
> 
> 	 
> 
> 	To recap my previous emails:
> 
> 	 
> 
> 	1)      TSG info needs to be carried in signaling in the GPID
> 
> 	2)      Any node that performs CSPF and selects the egress interface for an LSP needs to ensure that interfaces TSG is compatible with the ingress interfaces TSG as indicated in signaling (the GPID)
> 
> 	3)      Signaling should not carry hierarchy info because signaling only instantiates a single ODUj
> 
> 	4)      The ingress will sequentially signal multiple ODUj LSPs, each with a different value of j, in order to instantiate an OTN hierarchy between a given ingress/egress pair
> 
> 	 
> 
> 	As an aside, just over a year ago, we had an extended discussion of this topic in which I argued in support of the Infinera approach of using a single signaling message to instantiate any necessary intermediate hierarchy in support of a given client ODUj, and nobody bought my arguments..
> 
> 	 
> 
> 	Thanks,
> 
> 	 
> 
> 	John  
> 
> 	 
> 
> 	Sent from my iPhone
> 
> 	 
> 
> 	From: Fatai Zhang [mailto:zhangfatai@huawei.com] 
> 	Sent: Monday, July 16, 2012 7:03 PM
> 	To: Lou Berger; Daniele Ceccarelli
> 	Cc: John E Drake; ccamp@ietf.org; Khuzema Pithewan; zhangguoying@mail.ritt.com.cn; Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO VITTORIO); Diego Caviglia; Rajan Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO); Fatai Zhang
> 	Subject: : : : Updates on OTN signaling draft
> 
> 	 
> 
> 	Hi Lou,
> 
> 	 
> 
> 	[snip]
> 
> 	 
> 
> 	Let's understand where we are, :-), 
> 
> 	 
> 
> 	If my following understanding is not correct, please list some items that we need to get the consensus. 
> 
> 	 
> 
> 	=======================================================================================================================
> 
> 	 
> 
> 	> Intra-OTN is missing, wrt actual MRN/MLN, the capability of signlaing the TSG, while Inter-OTN is missing also the Adaptation between client and server layers (e.g. Bit-sync vs Byte-sync mapping, X.86 vs GFP etc)
> 
> 	> 
> 
> 	> [snip]
> 
> 	 
> 
> 	fair enough.
> 
> 	 
> 
> 	[Fatai] Did you mean (or agree) that intra-OTN is missing the capability of signaling the TSG? Should Inter-OTN be generic MRN/MLN?
> 
> 	 
> 
> 	> It appears we came to the conclusion that a general "intra switch cap" work is needed (non OTN specific).
> 
> 	> 
> 
> 	> My proposal was to include the problem statement in the bcg draft (so to make it cover both the inter and intra cases) and then work on a different encoding draft (I'm not sure the OTN signaling is the right place for general intra switch cap encoding. Maybe a pointer is more appropriate.
> 
> 	 
> 
> 	Sounds workable to me (and aligned with what John was saying).  Now let's see if others disagree or if we have consensus!
> 
> 	 
> 
> 	[Fatai] I understood Daniele's proposal. However, focusing on OTN signaling draft, did you mean that this draft (OTN signaling) should focus on OTN specific (intra-OTN) as what it is or this draft should remove TSG or hierachy information or bothe of them (ie., GPID extension for TSG and hierachy inforamtion in LSPA)? 
> 
> 	 
> 
> 	 
> 
> 	Thanks
> 
> 	 
> 
> 	Fatai
> 
> 	 
> 
> 	-----ʼԭ-----
> 	: Lou Berger [mailto:lberger@labn.net] 
> 	ʱ: 2012716 20:47
> 	ռ: Daniele Ceccarelli
> 	: Fatai Zhang; John E Drake; ccamp@ietf.org; Khuzema Pithewan; zhangguoying@mail.ritt.com.cn; Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO VITTORIO); Diego Caviglia; Rajan Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO)
> 	: Re: : : Updates on OTN signaling draft
> 
> 	 
> 
> 	[snip]
> 
> 	 
> 

From daniele.ceccarelli@ericsson.com  Wed Jul 18 06:37:33 2012
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From: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>
To: Lou Berger <lberger@labn.net>
Date: Wed, 18 Jul 2012 15:38:18 +0200
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From daniele.ceccarelli@ericsson.com  Wed Jul 18 07:03:29 2012
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From: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>
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From: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>
To: John E Drake <jdrake@juniper.net>, Fatai Zhang <zhangfatai@huawei.com>, Lou Berger <lberger@labn.net>
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From: John E Drake <jdrake@juniper.net>
To: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>, Fatai Zhang <zhangfatai@huawei.com>, Lou Berger <lberger@labn.net>
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Subject: [CCAMP] IETF 84 Draft Agenda Posted
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All,
	The draft agenda for Vancouver is available at:
http://www.ietf.org/proceedings/84/agenda/agenda-84-ccamp

Please let us (Daniele & Dan + chairs) know if you have comments or if
we missed anything.

Much thanks,
Lou (Deborah, Daniele & Dan)

From daniele.ceccarelli@ericsson.com  Thu Jul 19 03:19:26 2012
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From: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>
To: John E Drake <jdrake@juniper.net>, Fatai Zhang <zhangfatai@huawei.com>, Lou Berger <lberger@labn.net>
Date: Thu, 19 Jul 2012 12:20:14 +0200
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Date: Thu, 19 Jul 2012 10:18:33 +0000
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From: John E Drake <jdrake@juniper.net>
To: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>, Fatai Zhang <zhangfatai@huawei.com>, Lou Berger <lberger@labn.net>
Date: Thu, 19 Jul 2012 04:09:39 -0700
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From: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>
To: John E Drake <jdrake@juniper.net>, Fatai Zhang <zhangfatai@huawei.com>, Lou Berger <lberger@labn.net>
Date: Thu, 19 Jul 2012 13:57:19 +0200
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From: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>
To: Fatai Zhang <zhangfatai@huawei.com>, John E Drake <jdrake@juniper.net>, Lou Berger <lberger@labn.net>
Date: Thu, 19 Jul 2012 14:05:00 +0200
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From: "George Swallow (swallow)" <swallow@cisco.com>
To: "ccamp@ietf.org" <ccamp@ietf.org>
Thread-Topic: Comments on Fault OAM Configuration (draft-ietf-ccamp-rsvp-te-mpls-tp-oam-ext-08)
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Authors -

Some comments just on the FM parts for now.

Section 3.1.3. Configuration of Fault Management Signals

The first three paragraphs of this section have nothing to do with Fault OA=
M except the last phrase of the first paragraph, "and Fault Management Sign=
al handling."

The text in the first paragraph needs to be moved above the PM and Fault se=
ctions. The second and third paragraphs belong in the PM section.

The forth paragraph needs some work, but I defer on suggesting rewording un=
til we decide the issues below.

Section 3.5.  MPLS OAM FMS sub-TLV

1.  The way the section is written, it appears to be concerned with what si=
gnals are produced by endpoints (as opposed to how endpoints will react to =
received FM OAM).  In that case, I don't see the point in having an "D" fla=
g.  LDI is a flag carried on the AIS message.  If a implementation supports=
 the LDI flag it will set it appropriately.  If it doesn't it will never se=
t it.  What configuration is needed?

2.  Why do we need independent configuration of the L and A flags.  Under w=
hat circumstances would an operator want one and not the other?  Remember t=
hat options cost real $$$ to develop (small) and test (not so small since y=
ou have to do all combinations and often test against multiple releases inc=
luding interoperability with other vendors).

3.  I believe operators will want to set FM timers on a node-wide basis (or=
 perhaps a card-wide basis).  Generally I see no point in one end of a TP L=
SP telling the other how this timer should be set.  Further there is no nee=
d for consistency in the two directions.  If it were up to me I would drop =
it.

I suppose that is some rare circumstances if the End Service is MPLS-TP a c=
ustomer (client of the SP) might want something special. So if folks want t=
o retain it, then I suggest another flag that says timer field valid. The d=
efault setting of the flag would be 0, I.e. no timer.

4.  The draft correctly states that it is not intended to configure mid-poi=
nt behavior of the server MEP.  But I do believe it is worthwhile to have a=
n FM subscription flag in the object for server layer MEPs to examine and d=
etermine if the LSP would like any AIS/LKR messages that the server layer p=
roduces sent on this LSP.  This should be a SHOULD.  Ie.  At each hop of an=
 LSP, nodes SHOULD examine the FM subscription flag.  If the flag is set th=
en the server MEPs at this node SHOULD insert FM messages as appropriate in=
 this LSP.  If the flag is not set these MEPs SHOULD NOT insert FM messages=
.

=85George




--_000_CC2D987D5EF9swallowciscocom_
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<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3DWindows-1=
252">
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e-break: after-white-space; color: rgb(0, 0, 0); ">
<div style=3D"font-size: 14px; "><span class=3D"Apple-style-span" style=3D"=
font-size: 12px; "><font class=3D"Apple-style-span" face=3D"Courier">Author=
s -</font></span></div>
<div style=3D"font-size: 14px; "><span class=3D"Apple-style-span" style=3D"=
font-size: 12px;"><font class=3D"Apple-style-span" face=3D"Courier"><br>
</font></span></div>
<div style=3D"font-size: 14px; "><span class=3D"Apple-style-span" style=3D"=
font-size: 12px;"><font class=3D"Apple-style-span" face=3D"Courier">Some co=
mments just on the FM parts for now.</font></span></div>
<div style=3D"font-size: 14px; "><span class=3D"Apple-style-span" style=3D"=
font-size: 12px;"><font class=3D"Apple-style-span" face=3D"Courier"><br>
</font></span></div>
<div style=3D"font-size: 14px; "><span class=3D"Apple-style-span" style=3D"=
font-size: 12px;"><font class=3D"Apple-style-span" face=3D"Courier">Section=
&nbsp;<span class=3D"Apple-style-span" style=3D"white-space: pre; ">3.1.3. =
Configuration of Fault Management Signals</span></font></span></div>
<div style=3D"font-size: 14px; "><span class=3D"Apple-style-span" style=3D"=
white-space: pre; font-size: 12px;"><font class=3D"Apple-style-span" face=
=3D"Courier"><br>
</font></span></div>
<div style=3D"font-size: 14px; "><span class=3D"Apple-style-span" style=3D"=
font-size: 12px;"><font class=3D"Apple-style-span" face=3D"Courier"><span c=
lass=3D"Apple-style-span" style=3D"white-space: pre; ">The first three para=
graphs of this section have nothing to do with
 Fault OAM except the last phrase of the first paragraph, &quot;</span><spa=
n class=3D"Apple-style-span" style=3D"white-space: pre; ">and Fault Managem=
ent Signal handling.&quot;</span></font></span></div>
<div style=3D"font-size: 14px; "><span class=3D"Apple-style-span" style=3D"=
white-space: pre; font-size: 12px;"><font class=3D"Apple-style-span" face=
=3D"Courier"><br>
</font></span></div>
<div style=3D"font-size: 14px; "><span class=3D"Apple-style-span" style=3D"=
white-space: pre; font-size: 12px;"><font class=3D"Apple-style-span" face=
=3D"Courier">The text in the first paragraph needs to be moved above the PM=
 and Fault sections. The second and third paragraphs
 belong in the PM section.</font></span></div>
<div style=3D"font-size: 14px; "><span class=3D"Apple-style-span" style=3D"=
white-space: pre; font-size: 12px;"><font class=3D"Apple-style-span" face=
=3D"Courier"><br>
</font></span></div>
<div><span class=3D"Apple-style-span" style=3D"font-size: 12px; white-space=
: pre;"><font class=3D"Apple-style-span" face=3D"Courier">The forth paragra=
ph needs some work, but I defer on suggesting rewording until we decide the=
 issues below.</font></span></div>
<div style=3D"font-size: 14px; "><font class=3D"Apple-style-span" face=3D"C=
ourier"><span class=3D"Apple-style-span" style=3D"white-space: pre; font-si=
ze: 12px; ">
<pre><span class=3D"m_h">Section 3.5.  MPLS OAM FMS sub-TLV</span></pre>
<pre><span class=3D"m_h">1.  The way the section is written, it appears to =
be concerned with what signals are produced by endpoints (as opposed to how=
 endpoints will react to received FM OAM).  In that case, I don't see the p=
oint in having an &quot;D&quot; flag.  LDI is a flag carried on the AIS mes=
sage.  If a implementation supports the LDI flag it will set it appropriate=
ly.  If it doesn't it will never set it.  What configuration is needed?</sp=
an></pre>
<pre>2.  Why do we need independent configuration of the L and A flags.  Un=
der what circumstances would an operator want one and not the other?  Remem=
ber that options cost real $$$ to develop (small) and test (not so small si=
nce you have to do all combinations and often test against multiple release=
s including interoperability with other vendors).</pre>
<pre>3.  I believe operators will want to set FM timers on a node-wide basi=
s (or perhaps a card-wide basis).  Generally I see no point in one end of a=
 TP LSP telling the other how this timer should be set.  Further there is n=
o need for consistency in the two directions. &nbsp;If it were up to me I w=
ould drop it.</pre>
</span><span class=3D"Apple-style-span" style=3D"font-size: 12px; white-spa=
ce: pre; ">I suppose that is some rare circumstances if the End Service is =
MPLS-TP a customer (client of the SP) might want something special. So if f=
olks want to retain it, then I suggest
 another flag that says timer field valid. The default setting of the flag =
would be 0, I.e. no timer.</span><span class=3D"Apple-style-span" style=3D"=
white-space: pre; font-size: 12px; ">
<pre>4.  The draft correctly states that it is not intended to configure mi=
d-point behavior of the server MEP.  But I do believe it is worthwhile to h=
ave an FM subscription flag in the object for server layer MEPs to examine =
and determine if the LSP would like any AIS/LKR messages that the server la=
yer produces sent on this LSP.  This should be a SHOULD.  Ie.  At each hop =
of an LSP, nodes SHOULD examine the FM subscription flag.  If the flag is s=
et then the server MEPs at this node SHOULD insert FM messages as appropria=
te in this LSP.  If the flag is not set these MEPs SHOULD NOT insert FM mes=
sages.</pre>
<pre>=85George</pre>
<pre style=3D"text-align: left;"><br></pre>
</span></font></div>
<div style=3D"font-size: 14px; "><span class=3D"Apple-style-span" style=3D"=
white-space: pre; font-size: 12px;"><font class=3D"Apple-style-span" face=
=3D"Courier"><br>
</font></span></div>
<div style=3D"font-family: Calibri, sans-serif; font-size: 14px; "><font cl=
ass=3D"Apple-style-span" face=3D"monospace"><span class=3D"Apple-style-span=
" style=3D"white-space: pre;"><br>
</span></font></div>
</body>
</html>

--_000_CC2D987D5EF9swallowciscocom_--

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John,
	Just to be clear.  This was a bit of a joke right?  There are a
plethora of platform and even network specific reasons that lead to
specifying one address or another as both and LSP target and incoming
interface of an egress.  Some may recall the long discussions on
incoming vs outgoing interfaces in EROs in the early days of MPLS.  Like
then, I (personally) think GMPLS should continue to avoid specifying
behavior based on vendor implementation limitations.

More seriously, if you really think there is a technology-specific
restriction (rather than a particular vendor-limitation) then a BCP on
ERO specification may be appropriate.

Lou

On 7/18/2012 5:00 PM, John E Drake wrote:
> That's fair, but perhaps we should stipulate in an RFC 3471/3473 bis
> that the ingress node MUST specify the egress interface in the ERO?
> We seem to be spending a lot time and effort to work around this.
> 
> Sent from my iPhone
> 
> 
>> -----Original Message-----
>> From: Daniele Ceccarelli [mailto:daniele.ceccarelli@ericsson.com]
>> Sent: Wednesday, July 18, 2012 10:02 AM
>> To: John E Drake; Fatai Zhang; Lou Berger
>> Cc: ccamp@ietf.org; Khuzema Pithewan; zhangguoying@mail.ritt.com.cn;
>> Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO
>> VITTORIO); Diego Caviglia; Rajan Rao; IBryskin@advaoptical.com;
>> BELOTTI, SERGIO (SERGIO)
>> Subject: RE: : : Updates on OTN signaling draft
>>
>> Hi John,
>>
>> Yes it is, but it falls in the case I call strict ERO.
>> When I use the term loose ERO I refer to an ERO lacking of some info
>> (exactly that piece of information), when I refer to a strict ERO I
>> speak about an ERO including info of all the hops (hence including that
>> piece of information, the rest of the path is meaningless in this
>> context).
>> I know the terminology is not exact but I didn't want to invent new
>> names when referring to an ERO with that info and ERO without it.
>>
>> BR
>> Daniele
>>
>>> -----Original Message-----
>>> From: John E Drake [mailto:jdrake@juniper.net]
>>> Sent: mercoled 18 luglio 2012 17.58
>>> To: Daniele Ceccarelli; Fatai Zhang; Lou Berger
>>> Cc: ccamp@ietf.org; Khuzema Pithewan;
>>> zhangguoying@mail.ritt.com.cn; Linyi;
>>> xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO VITTORIO);
>>> Diego Caviglia; Rajan Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO
>>> (SERGIO)
>>> Subject: RE: : : Updates on OTN signaling draft
>>>
>>> Daniele,
>>>
>>> You are correct.  One question though, isn't it the case that it is
>>> sufficient for the ingress to specify the egress interface in the ERO
>>> rather than computing a strict ERO?
>>>
>>> Thanks,
>>>
>>> John
>>>
>>> Sent from my iPhone
>>>
>>>
>>>> -----Original Message-----
>>>> From: Daniele Ceccarelli [mailto:daniele.ceccarelli@ericsson.com]
>>>> Sent: Wednesday, July 18, 2012 3:30 AM
>>>> To: John E Drake; Fatai Zhang; Lou Berger
>>>> Cc: ccamp@ietf.org; Khuzema Pithewan; zhangguoying@mail.ritt.com.cn;
>>>> Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO
>>>> VITTORIO); Diego Caviglia; Rajan Rao; IBryskin@advaoptical.com;
>>>> BELOTTI, SERGIO (SERGIO)
>>>> Subject: RE: : : Updates on OTN signaling draft
>>>>
>>>> Hi John,
>>>>
>>>> partially agree. I think the hierarchy is still needed for
>>> those cases
>>>> in which 3 or more layer are being involved, in particular when the
>>>> penultimate node, performing the choice of the FA, receives a
>>>> signalling message of layer 2, needs to choose the FA at layer 3 and
>>>> is not aware of layer 1. Let's try to make an example (switched to
>>>> plain text for the drawing):
>>>>
>>>>                                  ODU1-LSP
>>>>            .....................................................
>>>>            |                                                   |
>>>>            |                           ODU2-H-LSP              |
>>>>            |            +======================================+
>>>>            |            |                                      |
>>>>            |            |                                      |
>>>>            |            |                   ODU3-H-LSP         |
>>>>            |            |            |-------------------------|
>>>>            |            |            |                         |
>>>>         +--+--+      +-----+      +--+--+      +---+-+      +-----+
>>>>         |     |      |     |      |     |      |     |      |     |
>>>>         |  A  +------+  B  +------+  C  +------+  D  |------+  E  |
>>>>         |     |      |     |      |     |      |     |      |     |
>>>>         +-----+      +-----+      +-----+      +-----+      +-----+
>>>>
>>>>
>>>> The LSP being signaled (ODUj), from A to E is an ODU1
>>> (called layer 1
>>>> above). B receives a path message related to the ODU1 and starts a
>>>> signaling for an ODU2. C receives the ODU2 path message whose
>>>> destination is E and needs to "choose among a set
>>> of"/"request the set
>>>> up of" an ODU3 H-LSP from itself to E (loose ERO used). The
>>> only thing
>>>> that C knows is that the interface on E must be able to perform an
>>>> ODU2->ODU3 demuxing to extract the client traffic from the ODU2.
>>>>
>>>> This is not correct, the demuxing capability required on the
>>> interface
>>>> on E is ODU1->ODU2->ODU3 and the only way to let C know it, is
>>>> introducing the hierarchy in signaling.
>>>>
>>>> I think this is quite a corner case, more academic speculation than
>>>> real case, but if there is a 0,00001% possibility it can happen, we
>>>> should cover the case.
>>>>
>>>> Please note that the problem does not exist using a strict
>>> ERO (which
>>>> i wuold suggest :-)
>>>>
>>>> Thanks,
>>>> Daniele
>>>>
>>>>
>>>>
>>>>
>>>> ________________________________
>>>>
>>>> 	From: John E Drake [mailto:jdrake@juniper.net]
>>>> 	Sent: marted 17 luglio 2012 16.18
>>>> 	To: Fatai Zhang; Lou Berger; Daniele Ceccarelli
>>>> 	Cc: ccamp@ietf.org; Khuzema Pithewan;
>>> zhangguoying@mail.ritt.com.cn;
>>>> Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO
>>>> VITTORIO); Diego Caviglia; Rajan Rao; IBryskin@advaoptical.com;
>>>> BELOTTI, SERGIO (SERGIO)
>>>> 	Subject: RE: : : Updates on OTN signaling draft
>>>>
>>>>
>>>>
>>>> 	Fatai,
>>>>
>>>>
>>>>
>>>> 	To recap my previous emails:
>>>>
>>>>
>>>>
>>>> 	1)      TSG info needs to be carried in signaling in the GPID
>>>>
>>>> 	2)      Any node that performs CSPF and selects the egress
>>>> interface for an LSP needs to ensure that interfaces TSG is
>>>> compatible with the ingress interfaces TSG as indicated in
>>> signaling
>>>> (the GPID)
>>>>
>>>> 	3)      Signaling should not carry hierarchy info because
>>>> signaling only instantiates a single ODUj
>>>>
>>>> 	4)      The ingress will sequentially signal multiple ODUj LSPs,
>>>> each with a different value of j, in order to instantiate an OTN
>>>> hierarchy between a given ingress/egress pair
>>>>
>>>>
>>>>
>>>> 	As an aside, just over a year ago, we had an extended
>>> discussion of
>>>> this topic in which I argued in support of the Infinera approach of
>>>> using a single signaling message to instantiate any necessary
>>>> intermediate hierarchy in support of a given client ODUj, and nobody
>>>> bought my arguments..
>>>>
>>>>
>>>>
>>>> 	Thanks,
>>>>
>>>>
>>>>
>>>> 	John
>>>>
>>>>
>>>>
>>>> 	Sent from my iPhone
>>>>
>>>>
>>>>
>>>> 	From: Fatai Zhang [mailto:zhangfatai@huawei.com]
>>>> 	Sent: Monday, July 16, 2012 7:03 PM
>>>> 	To: Lou Berger; Daniele Ceccarelli
>>>> 	Cc: John E Drake; ccamp@ietf.org; Khuzema Pithewan;
>>>> zhangguoying@mail.ritt.com.cn; Linyi; xuyunbin@mail.ritt.com.cn;
>>>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO); Diego Caviglia;
>>> Rajan Rao;
>>>> IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO); Fatai Zhang
>>>> 	Subject: : : : Updates on OTN signaling draft
>>>>
>>>>
>>>>
>>>> 	Hi Lou,
>>>>
>>>>
>>>>
>>>> 	[snip]
>>>>
>>>>
>>>>
>>>> 	Let's understand where we are, :-),
>>>>
>>>>
>>>>
>>>> 	If my following understanding is not correct, please
>>> list some items
>>>> that we need to get the consensus.
>>>>
>>>>
>>>>
>>>>
>>> =================================================================
>>>> ======================================================
>>>>
>>>>
>>>>
>>>> 	> Intra-OTN is missing, wrt actual MRN/MLN, the capability of
>>>> signlaing the TSG, while Inter-OTN is missing also the Adaptation
>>>> between client and server layers (e.g. Bit-sync vs Byte-sync
>> mapping,
>>>> X.86 vs GFP etc)
>>>>
>>>> 	>
>>>>
>>>> 	> [snip]
>>>>
>>>>
>>>>
>>>> 	fair enough.
>>>>
>>>>
>>>>
>>>> 	[Fatai] Did you mean (or agree) that intra-OTN is missing the
>>>> capability of signaling the TSG? Should Inter-OTN be generic
>> MRN/MLN?
>>>>
>>>>
>>>>
>>>> 	> It appears we came to the conclusion that a general
>>> "intra switch
>>>> cap" work is needed (non OTN specific).
>>>>
>>>> 	>
>>>>
>>>> 	> My proposal was to include the problem statement in
>>> the bcg draft
>>>> (so to make it cover both the inter and intra cases) and
>>> then work on
>>>> a different encoding draft (I'm not sure the OTN signaling is the
>>>> right place for general intra switch cap encoding. Maybe a
>>> pointer is
>>>> more appropriate.
>>>>
>>>>
>>>>
>>>> 	Sounds workable to me (and aligned with what John was saying).
>>>> Now let's see if others disagree or if we have consensus!
>>>>
>>>>
>>>>
>>>> 	[Fatai] I understood Daniele's proposal. However,
>>> focusing on OTN
>>>> signaling draft, did you mean that this draft (OTN signaling) should
>>>> focus on OTN specific (intra-OTN) as what it is or this draft should
>>>> remove TSG or hierachy information or bothe of them (ie., GPID
>>>> extension for TSG and hierachy inforamtion in LSPA)?
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> 	Thanks
>>>>
>>>>
>>>>
>>>> 	Fatai
>>>>
>>>>
>>>>
>>>> 	-----ʼԭ-----
>>>> 	: Lou Berger [mailto:lberger@labn.net]
>>>> 	ʱ: 2012716 20:47
>>>> 	ռ: Daniele Ceccarelli
>>>> 	: Fatai Zhang; John E Drake; ccamp@ietf.org; Khuzema
>>> Pithewan;
>>>> zhangguoying@mail.ritt.com.cn; Linyi; xuyunbin@mail.ritt.com.cn;
>>>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO); Diego Caviglia;
>>> Rajan Rao;
>>>> IBryskin@advaoptical.com; BELOTTI, SERGIO
>>>> (SERGIO)
>>>> 	: Re: : : Updates on OTN signaling draft
>>>>
>>>>
>>>>
>>>> 	[snip]
>>>>
>>>>
>>>
>>>

From lberger@labn.net  Thu Jul 19 08:44:56 2012
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From: Lou Berger <lberger@labn.net>
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References: <F82A4B6D50F9464B8EBA55651F541CF82CC528E5@SZXEML520-MBX.china.huawei.com> <500019A7.7060203@labn.net> <B5630A95D803744A81C51AD4040A6DAA22AE6FFF1B@ESESSCMS0360.eemea.ericsson.se> <5000304B.3080007@labn.net> <B5630A95D803744A81C51AD4040A6DAA22AE6FFFE2@ESESSCMS0360.eemea.ericsson.se> <50003B93.7060500@labn.net> <B5630A95D803744A81C51AD4040A6DAA22AE70032C@ESESSCMS0360.eemea.ericsson.se> <50040D47.7000209@labn.net> <F82A4B6D50F9464B8EBA55651F541CF82CC582C7@SZXEML520-MBX.china.huawei.com> <5E893DB832F57341992548CDBB333163A5A85B5D37@EMBX01-HQ.jnpr.net> <B5630A95D803744A81C51AD4040A6DAA22AE7B9867@ESESSCMS0360.eemea.ericsson.se> <5E893DB832F57341992548CDBB333163A5A87EEF8E@EMBX01-HQ.jnpr.net> <B5630A95D803744A81C51AD4040A6DAA22AE7B9A7F@ESESSCMS0360.eemea.ericsson.se> <5E893DB832F57341992548CDBB333163A5A87EF322@EMBX01-HQ.jnpr.net> <B5630A95D803744A81C51AD4040A6DAA22AE7B9CAE@ESESSCMS0360.eemea.ericsson.se> <5E893DB832F57341992548CDBB333163A5A87EF722@EMBX01-HQ.jnpr.net>
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Subject: Re: [CCAMP] =?gb2312?b?tPC4tDogtPC4tDogVXBkYXRlcyBvbiBPVE4gc2lnbmFs?= =?gb2312?b?aW5nIGRyYWZ0?=
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John/All,
	It sounds like we've reach some agreement on this thread, right?

(As participant in thread) I read that the conclusion is to not optimize
for a very special corner case and:
1) basically treat the intra-OTN case the same as any other MRN/MLN case
   (leveraging GPID, and no new hierarchy object)
2) Use Daniele's new draft on MRN/MLN as the starting point in the
discussion of how to address the limitations in MRN/MLN identified in
this discussion.

Did I miss anything?

Thanks,
Lou

On 7/19/2012 7:09 AM, John E Drake wrote:
> Daniele,
> 
> What concerns me is that we are headed in a design direction in which
> signaling is required to carry all of the information necessary to
> allow any intermediate node to select the egress interface for an
> LSP.  The issue I have with this is that it requires every
> intermediate node to have exactly the same capabilities as the
> ingress/egress nodes, which makes the incremental introduction of new
> capabilities more challenging.
> 
> Allowing heterogeneous nodal capabilities is one of the reasons we
> include all of this information in routing in the first place.
> 
> Thanks,
> 
> John 
> 
> Sent from my iPhone
> 
>> -----Original Message-----
>> From: Daniele Ceccarelli [mailto:daniele.ceccarelli@ericsson.com]
>> Sent: Thursday, July 19, 2012 3:20 AM
>> To: John E Drake; Fatai Zhang; Lou Berger
>> Cc: ccamp@ietf.org; Khuzema Pithewan; zhangguoying@mail.ritt.com.cn;
>> Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO
>> VITTORIO); Diego Caviglia; Rajan Rao; IBryskin@advaoptical.com;
>> BELOTTI, SERGIO (SERGIO)
>> Subject: RE: : : Updates on OTN signaling draft
>>
>> That could be another option perfectly reasonable.
>>
>> However I don't know which one is faster and cheaper. An RFC bis
>> modifies the behavior of existing implementaitons while an totally new
>> object already defined that only needs to be imported into the new
>> MRN/MLN extensions only applies to new implementations.
>> I assume the existing ones rely on cranck-backs or EROs including,
>> among the others, the egress interface (e.g. strict ERO).
>>
>> Thanks,
>> Daniele
>>
>>> -----Original Message-----
>>> From: John E Drake [mailto:jdrake@juniper.net]
>>> Sent: mercoled 18 luglio 2012 23.01
>>> To: Daniele Ceccarelli; Fatai Zhang; Lou Berger
>>> Cc: ccamp@ietf.org; Khuzema Pithewan;
>>> zhangguoying@mail.ritt.com.cn; Linyi;
>>> xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO VITTORIO);
>>> Diego Caviglia; Rajan Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO
>>> (SERGIO)
>>> Subject: RE: : : Updates on OTN signaling draft
>>>
>>> That's fair, but perhaps we should stipulate in an RFC
>>> 3471/3473 bis that the ingress node MUST specify the egress interface
>>> in the ERO?  We seem to be spending a lot time and effort to work
>>> around this.
>>>
>>> Sent from my iPhone
>>>
>>>
>>>> -----Original Message-----
>>>> From: Daniele Ceccarelli [mailto:daniele.ceccarelli@ericsson.com]
>>>> Sent: Wednesday, July 18, 2012 10:02 AM
>>>> To: John E Drake; Fatai Zhang; Lou Berger
>>>> Cc: ccamp@ietf.org; Khuzema Pithewan; zhangguoying@mail.ritt.com.cn;
>>>> Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO
>>>> VITTORIO); Diego Caviglia; Rajan Rao; IBryskin@advaoptical.com;
>>>> BELOTTI, SERGIO (SERGIO)
>>>> Subject: RE: : : Updates on OTN signaling draft
>>>>
>>>> Hi John,
>>>>
>>>> Yes it is, but it falls in the case I call strict ERO.
>>>> When I use the term loose ERO I refer to an ERO lacking of some info
>>>> (exactly that piece of information), when I refer to a strict ERO I
>>>> speak about an ERO including info of all the hops (hence including
>>>> that piece of information, the rest of the path is
>>> meaningless in this
>>>> context).
>>>> I know the terminology is not exact but I didn't want to invent new
>>>> names when referring to an ERO with that info and ERO without it.
>>>>
>>>> BR
>>>> Daniele
>>>>
>>>>> -----Original Message-----
>>>>> From: John E Drake [mailto:jdrake@juniper.net]
>>>>> Sent: mercoled 18 luglio 2012 17.58
>>>>> To: Daniele Ceccarelli; Fatai Zhang; Lou Berger
>>>>> Cc: ccamp@ietf.org; Khuzema Pithewan;
>>> zhangguoying@mail.ritt.com.cn;
>>>>> Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO
>>>>> VITTORIO); Diego Caviglia; Rajan Rao; IBryskin@advaoptical.com;
>>>>> BELOTTI, SERGIO
>>>>> (SERGIO)
>>>>> Subject: RE: : : Updates on OTN signaling draft
>>>>>
>>>>> Daniele,
>>>>>
>>>>> You are correct.  One question though, isn't it the case that it is
>>>>> sufficient for the ingress to specify the egress interface
>>> in the ERO
>>>>> rather than computing a strict ERO?
>>>>>
>>>>> Thanks,
>>>>>
>>>>> John
>>>>>
>>>>> Sent from my iPhone
>>>>>
>>>>>
>>>>>> -----Original Message-----
>>>>>> From: Daniele Ceccarelli [mailto:daniele.ceccarelli@ericsson.com]
>>>>>> Sent: Wednesday, July 18, 2012 3:30 AM
>>>>>> To: John E Drake; Fatai Zhang; Lou Berger
>>>>>> Cc: ccamp@ietf.org; Khuzema Pithewan;
>>>>>> zhangguoying@mail.ritt.com.cn; Linyi; xuyunbin@mail.ritt.com.cn;
>>>>>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO); Diego Caviglia; Rajan
>>>>>> Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO)
>>>>>> Subject: RE: : : Updates on OTN signaling draft
>>>>>>
>>>>>> Hi John,
>>>>>>
>>>>>> partially agree. I think the hierarchy is still needed for
>>>>> those cases
>>>>>> in which 3 or more layer are being involved, in
>>> particular when the
>>>>>> penultimate node, performing the choice of the FA, receives a
>>>>>> signalling message of layer 2, needs to choose the FA at layer 3
>>>>>> and is not aware of layer 1. Let's try to make an example
>>> (switched
>>>>>> to plain text for the drawing):
>>>>>>
>>>>>>                                  ODU1-LSP
>>>>>>            .....................................................
>>>>>>            |                                                   |
>>>>>>            |                           ODU2-H-LSP              |
>>>>>>            |            +======================================+
>>>>>>            |            |                                      |
>>>>>>            |            |                                      |
>>>>>>            |            |                   ODU3-H-LSP         |
>>>>>>            |            |            |-------------------------|
>>>>>>            |            |            |                         |
>>>>>>         +--+--+      +-----+      +--+--+      +---+-+
>>>  +-----+
>>>>>>         |     |      |     |      |     |      |     |
>>>  |     |
>>>>>>         |  A  +------+  B  +------+  C  +------+  D
>>> |------+  E  |
>>>>>>         |     |      |     |      |     |      |     |
>>>  |     |
>>>>>>         +-----+      +-----+      +-----+      +-----+
>>>  +-----+
>>>>>>
>>>>>>
>>>>>> The LSP being signaled (ODUj), from A to E is an ODU1
>>>>> (called layer 1
>>>>>> above). B receives a path message related to the ODU1 and
>>> starts a
>>>>>> signaling for an ODU2. C receives the ODU2 path message whose
>>>>>> destination is E and needs to "choose among a set
>>>>> of"/"request the set
>>>>>> up of" an ODU3 H-LSP from itself to E (loose ERO used). The
>>>>> only thing
>>>>>> that C knows is that the interface on E must be able to perform
>> an
>>>>>> ODU2->ODU3 demuxing to extract the client traffic from the ODU2.
>>>>>>
>>>>>> This is not correct, the demuxing capability required on the
>>>>> interface
>>>>>> on E is ODU1->ODU2->ODU3 and the only way to let C know it, is
>>>>>> introducing the hierarchy in signaling.
>>>>>>
>>>>>> I think this is quite a corner case, more academic
>>> speculation than
>>>>>> real case, but if there is a 0,00001% possibility it can
>>> happen, we
>>>>>> should cover the case.
>>>>>>
>>>>>> Please note that the problem does not exist using a strict
>>>>> ERO (which
>>>>>> i wuold suggest :-)
>>>>>>
>>>>>> Thanks,
>>>>>> Daniele
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> ________________________________
>>>>>>
>>>>>> 	From: John E Drake [mailto:jdrake@juniper.net]
>>>>>> 	Sent: marted 17 luglio 2012 16.18
>>>>>> 	To: Fatai Zhang; Lou Berger; Daniele Ceccarelli
>>>>>> 	Cc: ccamp@ietf.org; Khuzema Pithewan;
>>>>> zhangguoying@mail.ritt.com.cn;
>>>>>> Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO
>>>>>> VITTORIO); Diego Caviglia; Rajan Rao; IBryskin@advaoptical.com;
>>>>>> BELOTTI, SERGIO (SERGIO)
>>>>>> 	Subject: RE: : : Updates on OTN signaling draft
>>>>>>
>>>>>>
>>>>>>
>>>>>> 	Fatai,
>>>>>>
>>>>>>
>>>>>>
>>>>>> 	To recap my previous emails:
>>>>>>
>>>>>>
>>>>>>
>>>>>> 	1)      TSG info needs to be carried in signaling in the
>> GPID
>>>>>>
>>>>>> 	2)      Any node that performs CSPF and selects the egress
>>>>>> interface for an LSP needs to ensure that interfaces TSG is
>>>>>> compatible with the ingress interfaces TSG as indicated in
>>>>> signaling
>>>>>> (the GPID)
>>>>>>
>>>>>> 	3)      Signaling should not carry hierarchy info because
>>>>>> signaling only instantiates a single ODUj
>>>>>>
>>>>>> 	4)      The ingress will sequentially signal multiple ODUj
>> LSPs,
>>>>>> each with a different value of j, in order to instantiate an OTN
>>>>>> hierarchy between a given ingress/egress pair
>>>>>>
>>>>>>
>>>>>>
>>>>>> 	As an aside, just over a year ago, we had an extended
>>>>> discussion of
>>>>>> this topic in which I argued in support of the Infinera
>>> approach of
>>>>>> using a single signaling message to instantiate any necessary
>>>>>> intermediate hierarchy in support of a given client ODUj, and
>>>>>> nobody bought my arguments..
>>>>>>
>>>>>>
>>>>>>
>>>>>> 	Thanks,
>>>>>>
>>>>>>
>>>>>>
>>>>>> 	John
>>>>>>
>>>>>>
>>>>>>
>>>>>> 	Sent from my iPhone
>>>>>>
>>>>>>
>>>>>>
>>>>>> 	From: Fatai Zhang [mailto:zhangfatai@huawei.com]
>>>>>> 	Sent: Monday, July 16, 2012 7:03 PM
>>>>>> 	To: Lou Berger; Daniele Ceccarelli
>>>>>> 	Cc: John E Drake; ccamp@ietf.org; Khuzema Pithewan;
>>>>>> zhangguoying@mail.ritt.com.cn; Linyi; xuyunbin@mail.ritt.com.cn;
>>>>>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO); Diego Caviglia;
>>>>> Rajan Rao;
>>>>>> IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO); Fatai Zhang
>>>>>> 	Subject: : : : Updates on OTN signaling draft
>>>>>>
>>>>>>
>>>>>>
>>>>>> 	Hi Lou,
>>>>>>
>>>>>>
>>>>>>
>>>>>> 	[snip]
>>>>>>
>>>>>>
>>>>>>
>>>>>> 	Let's understand where we are, :-),
>>>>>>
>>>>>>
>>>>>>
>>>>>> 	If my following understanding is not correct, please
>>>>> list some items
>>>>>> that we need to get the consensus.
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>> =================================================================
>>>>>> ======================================================
>>>>>>
>>>>>>
>>>>>>
>>>>>> 	> Intra-OTN is missing, wrt actual MRN/MLN, the capability
>> of
>>>>>> signlaing the TSG, while Inter-OTN is missing also the Adaptation
>>>>>> between client and server layers (e.g. Bit-sync vs Byte-sync
>>>> mapping,
>>>>>> X.86 vs GFP etc)
>>>>>>
>>>>>> 	>
>>>>>>
>>>>>> 	> [snip]
>>>>>>
>>>>>>
>>>>>>
>>>>>> 	fair enough.
>>>>>>
>>>>>>
>>>>>>
>>>>>> 	[Fatai] Did you mean (or agree) that intra-OTN is missing
>> the
>>>>>> capability of signaling the TSG? Should Inter-OTN be generic
>>>> MRN/MLN?
>>>>>>
>>>>>>
>>>>>>
>>>>>> 	> It appears we came to the conclusion that a general
>>>>> "intra switch
>>>>>> cap" work is needed (non OTN specific).
>>>>>>
>>>>>> 	>
>>>>>>
>>>>>> 	> My proposal was to include the problem statement in
>>>>> the bcg draft
>>>>>> (so to make it cover both the inter and intra cases) and
>>>>> then work on
>>>>>> a different encoding draft (I'm not sure the OTN signaling is the
>>>>>> right place for general intra switch cap encoding. Maybe a
>>>>> pointer is
>>>>>> more appropriate.
>>>>>>
>>>>>>
>>>>>>
>>>>>> 	Sounds workable to me (and aligned with what John was
>> saying).
>>>>>> Now let's see if others disagree or if we have consensus!
>>>>>>
>>>>>>
>>>>>>
>>>>>> 	[Fatai] I understood Daniele's proposal. However,
>>>>> focusing on OTN
>>>>>> signaling draft, did you mean that this draft (OTN signaling)
>>>>>> should focus on OTN specific (intra-OTN) as what it is or this
>>>>>> draft should remove TSG or hierachy information or bothe of them
>>>>>> (ie., GPID extension for TSG and hierachy inforamtion in LSPA)?
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> 	Thanks
>>>>>>
>>>>>>
>>>>>>
>>>>>> 	Fatai
>>>>>>
>>>>>>
>>>>>>
>>>>>> 	-----ʼԭ-----
>>>>>> 	: Lou Berger [mailto:lberger@labn.net]
>>>>>> 	ʱ: 2012716 20:47
>>>>>> 	ռ: Daniele Ceccarelli
>>>>>> 	: Fatai Zhang; John E Drake; ccamp@ietf.org; Khuzema
>>>>> Pithewan;
>>>>>> zhangguoying@mail.ritt.com.cn; Linyi; xuyunbin@mail.ritt.com.cn;
>>>>>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO); Diego Caviglia;
>>>>> Rajan Rao;
>>>>>> IBryskin@advaoptical.com; BELOTTI, SERGIO
>>>>>> (SERGIO)
>>>>>> 	: Re: : : Updates on OTN signaling draft
>>>>>>
>>>>>>
>>>>>>
>>>>>> 	[snip]
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>

From jdrake@juniper.net  Thu Jul 19 08:55:11 2012
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From: John E Drake <jdrake@juniper.net>
To: Lou Berger <lberger@labn.net>
Date: Thu, 19 Jul 2012 08:54:03 -0700
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From jdrake@juniper.net  Thu Jul 19 09:08:14 2012
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From: John E Drake <jdrake@juniper.net>
To: Lou Berger <lberger@labn.net>
Date: Thu, 19 Jul 2012 09:07:13 -0700
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Subject: Re: [CCAMP] =?gb2312?b?tPC4tDogtPC4tDogVXBkYXRlcyBvbiBPVE4gc2lnbmFs?= =?gb2312?b?aW5nIGRyYWZ0?=
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On 7/19/2012 11:54 AM, John E Drake wrote:
> This sounds like a plan. 

great!

> Lou, if the signaling draft could be
> re-spun with these changes prior to Vancouver, then could we discuss
> the draft there and set the stage for a LC of it and the routing
> draft?

I assume you're asking a chair question.  From the WG process (and
chair) standpoint:

- it's always good practice to have a WG draft reflect changes discussed
by the WG at the earliest opportunity, which would be on Monday 7/30 in
this case.

- WG presentations really should be aimed at reviewing recent
changes/agreements and identifying/resolving open issues.  So, it would
be a mistake for a WG presentation to omit progress on the list just
because the progress took place after the ID cutoff.

- WRT LC.  Clearly LC can't happen until all anticipated updates are
published.  Let's also see how the discussion goes in Vancouver -- we
have put time on the agenda to discuss any remaining open issues.

Lou

> 
> Sent from my iPhone
> 
> 
>> -----Original Message-----
>> From: Lou Berger [mailto:lberger@labn.net]
>> Sent: Thursday, July 19, 2012 8:46 AM
>> To: John E Drake
>> Cc: Daniele Ceccarelli; Fatai Zhang; ccamp@ietf.org; Khuzema Pithewan;
>> zhangguoying@mail.ritt.com.cn; Linyi; xuyunbin@mail.ritt.com.cn;
>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO); Diego Caviglia; Rajan Rao;
>> IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO)
>> Subject: Re: : : Updates on OTN signaling draft
>>
>> John/All,
>>       It sounds like we've reach some agreement on this thread, right?
>>
>> (As participant in thread) I read that the conclusion is to not
>> optimize for a very special corner case and:
>> 1) basically treat the intra-OTN case the same as any other MRN/MLN
>> case
>>    (leveraging GPID, and no new hierarchy object)
>> 2) Use Daniele's new draft on MRN/MLN as the starting point in the
>> discussion of how to address the limitations in MRN/MLN identified in
>> this discussion.
>>
>> Did I miss anything?
>>
>> Thanks,
>> Lou
>>
>> On 7/19/2012 7:09 AM, John E Drake wrote:
>>> Daniele,
>>>
>>> What concerns me is that we are headed in a design direction in which
>>> signaling is required to carry all of the information necessary to
>>> allow any intermediate node to select the egress interface for an
>> LSP.
>>> The issue I have with this is that it requires every intermediate
>> node
>>> to have exactly the same capabilities as the ingress/egress nodes,
>>> which makes the incremental introduction of new capabilities more
>>> challenging.
>>>
>>> Allowing heterogeneous nodal capabilities is one of the reasons we
>>> include all of this information in routing in the first place.
>>>
>>> Thanks,
>>>
>>> John
>>>
>>> Sent from my iPhone
>>>
>>>> -----Original Message-----
>>>> From: Daniele Ceccarelli [mailto:daniele.ceccarelli@ericsson.com]
>>>> Sent: Thursday, July 19, 2012 3:20 AM
>>>> To: John E Drake; Fatai Zhang; Lou Berger
>>>> Cc: ccamp@ietf.org; Khuzema Pithewan; zhangguoying@mail.ritt.com.cn;
>>>> Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO
>>>> VITTORIO); Diego Caviglia; Rajan Rao; IBryskin@advaoptical.com;
>>>> BELOTTI, SERGIO (SERGIO)
>>>> Subject: RE: : : Updates on OTN signaling draft
>>>>
>>>> That could be another option perfectly reasonable.
>>>>
>>>> However I don't know which one is faster and cheaper. An RFC bis
>>>> modifies the behavior of existing implementaitons while an totally
>>>> new object already defined that only needs to be imported into the
>>>> new MRN/MLN extensions only applies to new implementations.
>>>> I assume the existing ones rely on cranck-backs or EROs including,
>>>> among the others, the egress interface (e.g. strict ERO).
>>>>
>>>> Thanks,
>>>> Daniele
>>>>
>>>>> -----Original Message-----
>>>>> From: John E Drake [mailto:jdrake@juniper.net]
>>>>> Sent: mercoled 18 luglio 2012 23.01
>>>>> To: Daniele Ceccarelli; Fatai Zhang; Lou Berger
>>>>> Cc: ccamp@ietf.org; Khuzema Pithewan;
>> zhangguoying@mail.ritt.com.cn;
>>>>> Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO
>>>>> VITTORIO); Diego Caviglia; Rajan Rao; IBryskin@advaoptical.com;
>>>>> BELOTTI, SERGIO
>>>>> (SERGIO)
>>>>> Subject: RE: : : Updates on OTN signaling draft
>>>>>
>>>>> That's fair, but perhaps we should stipulate in an RFC
>>>>> 3471/3473 bis that the ingress node MUST specify the egress
>>>>> interface in the ERO?  We seem to be spending a lot time and effort
>>>>> to work around this.
>>>>>
>>>>> Sent from my iPhone
>>>>>
>>>>>
>>>>>> -----Original Message-----
>>>>>> From: Daniele Ceccarelli [mailto:daniele.ceccarelli@ericsson.com]
>>>>>> Sent: Wednesday, July 18, 2012 10:02 AM
>>>>>> To: John E Drake; Fatai Zhang; Lou Berger
>>>>>> Cc: ccamp@ietf.org; Khuzema Pithewan;
>>>>>> zhangguoying@mail.ritt.com.cn; Linyi; xuyunbin@mail.ritt.com.cn;
>>>>>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO); Diego Caviglia; Rajan
>>>>>> Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO)
>>>>>> Subject: RE: : : Updates on OTN signaling draft
>>>>>>
>>>>>> Hi John,
>>>>>>
>>>>>> Yes it is, but it falls in the case I call strict ERO.
>>>>>> When I use the term loose ERO I refer to an ERO lacking of some
>>>>>> info (exactly that piece of information), when I refer to a strict
>>>>>> ERO I speak about an ERO including info of all the hops (hence
>>>>>> including that piece of information, the rest of the path is
>>>>> meaningless in this
>>>>>> context).
>>>>>> I know the terminology is not exact but I didn't want to invent
>> new
>>>>>> names when referring to an ERO with that info and ERO without it.
>>>>>>
>>>>>> BR
>>>>>> Daniele
>>>>>>
>>>>>>> -----Original Message-----
>>>>>>> From: John E Drake [mailto:jdrake@juniper.net]
>>>>>>> Sent: mercoled 18 luglio 2012 17.58
>>>>>>> To: Daniele Ceccarelli; Fatai Zhang; Lou Berger
>>>>>>> Cc: ccamp@ietf.org; Khuzema Pithewan;
>>>>> zhangguoying@mail.ritt.com.cn;
>>>>>>> Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO
>>>>>>> VITTORIO); Diego Caviglia; Rajan Rao; IBryskin@advaoptical.com;
>>>>>>> BELOTTI, SERGIO
>>>>>>> (SERGIO)
>>>>>>> Subject: RE: : : Updates on OTN signaling draft
>>>>>>>
>>>>>>> Daniele,
>>>>>>>
>>>>>>> You are correct.  One question though, isn't it the case that it
>>>>>>> is sufficient for the ingress to specify the egress interface
>>>>> in the ERO
>>>>>>> rather than computing a strict ERO?
>>>>>>>
>>>>>>> Thanks,
>>>>>>>
>>>>>>> John
>>>>>>>
>>>>>>> Sent from my iPhone
>>>>>>>
>>>>>>>
>>>>>>>> -----Original Message-----
>>>>>>>> From: Daniele Ceccarelli
>> [mailto:daniele.ceccarelli@ericsson.com]
>>>>>>>> Sent: Wednesday, July 18, 2012 3:30 AM
>>>>>>>> To: John E Drake; Fatai Zhang; Lou Berger
>>>>>>>> Cc: ccamp@ietf.org; Khuzema Pithewan;
>>>>>>>> zhangguoying@mail.ritt.com.cn; Linyi; xuyunbin@mail.ritt.com.cn;
>>>>>>>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO); Diego Caviglia; Rajan
>>>>>>>> Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO)
>>>>>>>> Subject: RE: : : Updates on OTN signaling draft
>>>>>>>>
>>>>>>>> Hi John,
>>>>>>>>
>>>>>>>> partially agree. I think the hierarchy is still needed for
>>>>>>> those cases
>>>>>>>> in which 3 or more layer are being involved, in
>>>>> particular when the
>>>>>>>> penultimate node, performing the choice of the FA, receives a
>>>>>>>> signalling message of layer 2, needs to choose the FA at layer 3
>>>>>>>> and is not aware of layer 1. Let's try to make an example
>>>>> (switched
>>>>>>>> to plain text for the drawing):
>>>>>>>>
>>>>>>>>                                  ODU1-LSP
>>>>>>>>            .....................................................
>>>>>>>>            |                                                   |
>>>>>>>>            |                           ODU2-H-LSP              |
>>>>>>>>            |            +======================================+
>>>>>>>>            |            |                                      |
>>>>>>>>            |            |                                      |
>>>>>>>>            |            |                   ODU3-H-LSP         |
>>>>>>>>            |            |            |-------------------------|
>>>>>>>>            |            |            |                         |
>>>>>>>>         +--+--+      +-----+      +--+--+      +---+-+
>>>>>  +-----+
>>>>>>>>         |     |      |     |      |     |      |     |
>>>>>  |     |
>>>>>>>>         |  A  +------+  B  +------+  C  +------+  D
>>>>> |------+  E  |
>>>>>>>>         |     |      |     |      |     |      |     |
>>>>>  |     |
>>>>>>>>         +-----+      +-----+      +-----+      +-----+
>>>>>  +-----+
>>>>>>>>
>>>>>>>>
>>>>>>>> The LSP being signaled (ODUj), from A to E is an ODU1
>>>>>>> (called layer 1
>>>>>>>> above). B receives a path message related to the ODU1 and
>>>>> starts a
>>>>>>>> signaling for an ODU2. C receives the ODU2 path message whose
>>>>>>>> destination is E and needs to "choose among a set
>>>>>>> of"/"request the set
>>>>>>>> up of" an ODU3 H-LSP from itself to E (loose ERO used). The
>>>>>>> only thing
>>>>>>>> that C knows is that the interface on E must be able to perform
>>>> an
>>>>>>>> ODU2->ODU3 demuxing to extract the client traffic from the ODU2.
>>>>>>>>
>>>>>>>> This is not correct, the demuxing capability required on the
>>>>>>> interface
>>>>>>>> on E is ODU1->ODU2->ODU3 and the only way to let C know it, is
>>>>>>>> introducing the hierarchy in signaling.
>>>>>>>>
>>>>>>>> I think this is quite a corner case, more academic
>>>>> speculation than
>>>>>>>> real case, but if there is a 0,00001% possibility it can
>>>>> happen, we
>>>>>>>> should cover the case.
>>>>>>>>
>>>>>>>> Please note that the problem does not exist using a strict
>>>>>>> ERO (which
>>>>>>>> i wuold suggest :-)
>>>>>>>>
>>>>>>>> Thanks,
>>>>>>>> Daniele
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> ________________________________
>>>>>>>>
>>>>>>>>        From: John E Drake [mailto:jdrake@juniper.net]
>>>>>>>>        Sent: marted 17 luglio 2012 16.18
>>>>>>>>        To: Fatai Zhang; Lou Berger; Daniele Ceccarelli
>>>>>>>>        Cc: ccamp@ietf.org; Khuzema Pithewan;
>>>>>>> zhangguoying@mail.ritt.com.cn;
>>>>>>>> Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO
>> (PIETRO
>>>>>>>> VITTORIO); Diego Caviglia; Rajan Rao; IBryskin@advaoptical.com;
>>>>>>>> BELOTTI, SERGIO (SERGIO)
>>>>>>>>        Subject: RE: : : Updates on OTN signaling draft
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>        Fatai,
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>        To recap my previous emails:
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>        1)      TSG info needs to be carried in signaling in the
>>>> GPID
>>>>>>>>
>>>>>>>>        2)      Any node that performs CSPF and selects the egress
>>>>>>>> interface for an LSP needs to ensure that interfaces TSG is
>>>>>>>> compatible with the ingress interfaces TSG as indicated in
>>>>>>> signaling
>>>>>>>> (the GPID)
>>>>>>>>
>>>>>>>>        3)      Signaling should not carry hierarchy info because
>>>>>>>> signaling only instantiates a single ODUj
>>>>>>>>
>>>>>>>>        4)      The ingress will sequentially signal multiple ODUj
>>>> LSPs,
>>>>>>>> each with a different value of j, in order to instantiate an OTN
>>>>>>>> hierarchy between a given ingress/egress pair
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>        As an aside, just over a year ago, we had an extended
>>>>>>> discussion of
>>>>>>>> this topic in which I argued in support of the Infinera
>>>>> approach of
>>>>>>>> using a single signaling message to instantiate any necessary
>>>>>>>> intermediate hierarchy in support of a given client ODUj, and
>>>>>>>> nobody bought my arguments..
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>        Thanks,
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>        John
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>        Sent from my iPhone
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>        From: Fatai Zhang [mailto:zhangfatai@huawei.com]
>>>>>>>>        Sent: Monday, July 16, 2012 7:03 PM
>>>>>>>>        To: Lou Berger; Daniele Ceccarelli
>>>>>>>>        Cc: John E Drake; ccamp@ietf.org; Khuzema Pithewan;
>>>>>>>> zhangguoying@mail.ritt.com.cn; Linyi; xuyunbin@mail.ritt.com.cn;
>>>>>>>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO); Diego Caviglia;
>>>>>>> Rajan Rao;
>>>>>>>> IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO); Fatai Zhang
>>>>>>>>        Subject: : : : Updates on OTN signaling draft
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>        Hi Lou,
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>        [snip]
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>        Let's understand where we are, :-),
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>        If my following understanding is not correct, please
>>>>>>> list some items
>>>>>>>> that we need to get the consensus.
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>> =================================================================
>>>>>>>> ======================================================
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>        > Intra-OTN is missing, wrt actual MRN/MLN, the capability
>>>> of
>>>>>>>> signlaing the TSG, while Inter-OTN is missing also the
>> Adaptation
>>>>>>>> between client and server layers (e.g. Bit-sync vs Byte-sync
>>>>>> mapping,
>>>>>>>> X.86 vs GFP etc)
>>>>>>>>
>>>>>>>>        >
>>>>>>>>
>>>>>>>>        > [snip]
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>        fair enough.
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>        [Fatai] Did you mean (or agree) that intra-OTN is missing
>>>> the
>>>>>>>> capability of signaling the TSG? Should Inter-OTN be generic
>>>>>> MRN/MLN?
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>        > It appears we came to the conclusion that a general
>>>>>>> "intra switch
>>>>>>>> cap" work is needed (non OTN specific).
>>>>>>>>
>>>>>>>>        >
>>>>>>>>
>>>>>>>>        > My proposal was to include the problem statement in
>>>>>>> the bcg draft
>>>>>>>> (so to make it cover both the inter and intra cases) and
>>>>>>> then work on
>>>>>>>> a different encoding draft (I'm not sure the OTN signaling is
>> the
>>>>>>>> right place for general intra switch cap encoding. Maybe a
>>>>>>> pointer is
>>>>>>>> more appropriate.
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>        Sounds workable to me (and aligned with what John was
>>>> saying).
>>>>>>>> Now let's see if others disagree or if we have consensus!
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>        [Fatai] I understood Daniele's proposal. However,
>>>>>>> focusing on OTN
>>>>>>>> signaling draft, did you mean that this draft (OTN signaling)
>>>>>>>> should focus on OTN specific (intra-OTN) as what it is or this
>>>>>>>> draft should remove TSG or hierachy information or bothe of them
>>>>>>>> (ie., GPID extension for TSG and hierachy inforamtion in LSPA)?
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>        Thanks
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>        Fatai
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>        -----ʼԭ-----
>>>>>>>>        : Lou Berger [mailto:lberger@labn.net]
>>>>>>>>        ʱ: 2012716 20:47
>>>>>>>>        ռ: Daniele Ceccarelli
>>>>>>>>        : Fatai Zhang; John E Drake; ccamp@ietf.org; Khuzema
>>>>>>> Pithewan;
>>>>>>>> zhangguoying@mail.ritt.com.cn; Linyi; xuyunbin@mail.ritt.com.cn;
>>>>>>>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO); Diego Caviglia;
>>>>>>> Rajan Rao;
>>>>>>>> IBryskin@advaoptical.com; BELOTTI, SERGIO
>>>>>>>> (SERGIO)
>>>>>>>>        : Re: : : Updates on OTN signaling draft
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>        [snip]
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>

From zhangfatai@huawei.com  Fri Jul 20 00:53:47 2012
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From: Fatai Zhang <zhangfatai@huawei.com>
To: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>, John E Drake <jdrake@juniper.net>, Lou Berger <lberger@labn.net>
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From: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>
To: Fatai Zhang <zhangfatai@huawei.com>, John E Drake <jdrake@juniper.net>, Lou Berger <lberger@labn.net>
Date: Fri, 20 Jul 2012 11:53:15 +0200
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Subject: [CCAMP] I-D ACTION:draft-ietf-ccamp-rfc5787bis-05.txt
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A new Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Common Control and Measurement Plane Working Group of the IETF.

    Title         : ASON Routing for OSPFv2 Protocols
    Author(s)     : A. Malis, et al
    Filename      : draft-ietf-ccamp-rfc5787bis
    Pages         : 30 
    Date          : July 20, 2012 
    
The ITU-T has defined an architecture and requirements for operating
   an Automatically Switched Optical Network (ASON).

   The Generalized Multiprotocol Label Switching (GMPLS) protocol suite
   is designed to provide a control plane for a range of network
   technologies including optical networks such as time division
   multiplexing (TDM) networks including SONET/SDH and Optical Transport
   Networks (OTNs), and lambda switching optical networks.

   The requirements for GMPLS routing to satisfy the requirements of
   ASON routing, and an evaluation of existing GMPLS routing protocols
   are provided in other documents.  This document defines extensions to
   the OSPFv2 Link State Routing Protocol to meet the requirements for
   routing in an ASON.

   Note that this work is scoped to the requirements and evaluation
   expressed in RFC 4258 and RFC 4652 and the ITU-T Recommendations
   current when those documents were written.  Future extensions of
   revisions of this work may be necessary if the ITU-T Recommendations
   are revised or if new requirements are introduced into a revision of
   RFC 4258. This document obsoletes RFC 5787 and updates RFC 5786.

A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-ccamp-rfc5787bis-05.txt

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From iesg-secretary@ietf.org  Fri Jul 20 11:19:16 2012
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Subject: [CCAMP] Last Call: <draft-ietf-ccamp-rfc5787bis-05.txt> (ASON Routing for	OSPFv2 Protocols) to Proposed Standard
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The IESG has received a request from the Common Control and Measurement
Plane WG (ccamp) to consider the following document:
- 'ASON Routing for OSPFv2 Protocols'
  <draft-ietf-ccamp-rfc5787bis-05.txt> as Proposed Standard

The IESG plans to make a decision in the next few weeks, and solicits
final comments on this action. Please send substantive comments to the
ietf@ietf.org mailing lists by 2012-08-17. Exceptionally, comments may be
sent to iesg@ietf.org instead. In either case, please retain the
beginning of the Subject line to allow automated sorting. This is a four-
week last call period because it spans the IETF-84 meeting.

Abstract

   The ITU-T has defined an architecture and requirements for operating
   an Automatically Switched Optical Network (ASON).

   The Generalized Multiprotocol Label Switching (GMPLS) protocol suite
   is designed to provide a control plane for a range of network
   technologies including optical networks such as time division
   multiplexing (TDM) networks including SONET/SDH and Optical Transport
   Networks (OTNs), and lambda switching optical networks.

   The requirements for GMPLS routing to satisfy the requirements of
   ASON routing, and an evaluation of existing GMPLS routing protocols
   are provided in other documents.  This document defines extensions to
   the OSPFv2 Link State Routing Protocol to meet the requirements for
   routing in an ASON.

   Note that this work is scoped to the requirements and evaluation
   expressed in RFC 4258 and RFC 4652 and the ITU-T Recommendations
   current when those documents were written.  Future extensions of
   revisions of this work may be necessary if the ITU-T Recommendations
   are revised or if new requirements are introduced into a revision of
   RFC 4258. This document obsoletes RFC 5787 and updates RFC 5786.



The file can be obtained via
http://datatracker.ietf.org/doc/draft-ietf-ccamp-rfc5787bis/

IESG discussion can be tracked via
http://datatracker.ietf.org/doc/draft-ietf-ccamp-rfc5787bis/ballot/

No IPR declarations have been submitted directly on this I-D.

From zhangfatai@huawei.com  Sun Jul 22 20:08:34 2012
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From: John E Drake <jdrake@juniper.net>
To: Fatai Zhang <zhangfatai@huawei.com>, Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>, Lou Berger <lberger@labn.net>
Date: Mon, 23 Jul 2012 05:44:59 -0700
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From: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>
To: John E Drake <jdrake@juniper.net>, Fatai Zhang <zhangfatai@huawei.com>, Lou Berger <lberger@labn.net>
Date: Mon, 23 Jul 2012 16:40:46 +0200
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Hi Fatai, hi Daniele.

It feels like the proposed wording is leaving out the case of 
"homogeneous hierarchy + different TSGs": is it on purpose?

Since it is not obvious if you are talking about data plane capabilities 
or control plane supports, what about adding something like the following?
"If component links supporting an homogeneous hierarchy but different 
TSGs are bundled together, the smallest commonly supported TSG SHOULD be 
used (i.e. fallback is forced for lower granularity components)."

Regards,

Julien


Le 23/07/2012 05:05, Fatai Zhang a écrit :
> Hi Daniele,
>
> If non-homogeneous component links MUST NOT be bundled together, it means that component links with different characteristics MUST be advertised in different LSAs (as different TE links) instead of different ISCDs in the same LSA (as one single TE link).
>
> Therefore, I would suggest the following text by removing "and a different ISCD MUST be used for each different muxing hierarchy (muxing tree in the following examples) and different TSG supported within the TE Link, if it includes component links with differing characteristics." , because this text conflicts with " Component links supporting non homogenous hierarchies MUST NOT be bundled together".
>
> Hope all the people are interested in OTN protocol to review this NEW text.
>
> NEW:
>     A single ISCD MAY be used for the advertisement of unbundled or
>     bundled links supporting homogeneous multiplexing hierarchies and the
>     same Tributary Slot Granularity (TSG). Component links supporting non homogenous
>     hierarchies MUST NOT be bundled together.
>
>
>
> Thanks
>
> Fatai
>
> -----邮件原件-----
> 发件人: Daniele Ceccarelli [mailto:daniele.ceccarelli@ericsson.com]
> 发送时间: 2012年7月20日 17:53
> 收件人: Fatai Zhang; John E Drake; Lou Berger
> 抄送: ccamp@ietf.org; Khuzema Pithewan; zhangguoying@mail.ritt.com.cn; Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO VITTORIO); Diego Caviglia; Rajan Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO)
> 主题: RE: 答复: 答复: Updates on OTN signaling draft
>
> Hi Fatai,
>
> 1. wrt the text in the OSPF draft - I was assuming that the text was implying that component links with non homogeneous hierarchies could not be bundled, but maybe it is bettere making it explicit. What about:
>
> OLD:
>     A single ISCD MAY be used for the advertisement of unbundled or
>     bundled links supporting homogeneous multiplexing hierarchies and the
>     same Tributary Slot Granularity (TSG).  A different ISCD MUST be used
>     for each different muxing hierarchy (muxing tree in the following
>     examples) and different TSG supported within the TE Link, if it
>     includes component links with differing characteristics.
> NEW:
>     A single ISCD MAY be used for the advertisement of unbundled or
>     bundled links supporting homogeneous multiplexing hierarchies and the
>     same Tributary Slot Granularity (TSG).  Component links supporting non homogenous
>     hierarchies MUST NOT be bundled together and a different ISCD MUST be used
>     for each different muxing hierarchy (muxing tree in the following
>     examples) and different TSG supported within the TE Link, if it
>     includes component links with differing characteristics.
>
> I just realized that the version -03 we've been working on has not been published. I'll introduce this change in the -03 version and upload it on July 30th.
>
> 2. Wrt the utilization of the "strict ERO" - All the past considerations are still true as the bundling of only homogenous hierarchies has been taken into account. Hence the "strict ERO" is still needed because the information needed by the penultimate hop for the H-LSP choice is not only depending on what is the H-LSP capability but what is being carried by the LSP being signaled.
>
> Thanks,
> Daniele
>
>
>> -----Original Message-----
>> From: Fatai Zhang [mailto:zhangfatai@huawei.com]
>> Sent: venerdì 20 luglio 2012 9.52
>> To: Daniele Ceccarelli; John E Drake; Lou Berger
>> Cc: ccamp@ietf.org; Khuzema Pithewan;
>> zhangguoying@mail.ritt.com.cn; Linyi;
>> xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO
>> VITTORIO); Diego Caviglia; Rajan Rao;
>> IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO)
>> Subject: 答复: 答复: 答复: Updates on OTN signaling draft
>>
>> Hi Daniele,
>>
>> Correct. What you said is my suggestion in 11th July (ie.,
>> remove link bundling (or bundle the homogeneous component links).
>>
>> However, the quoted text from [OTN-OSPF] draft, it allows to
>> bundle heterogeneous component links by different ISCDs. If it
>> states explicitly that only homogeneous component links could
>> be bundled (ie., heterogeneous component links MUST not
>> bundled), then what you said below is completely correct.
>>
>> Let's step further, if no bundling or only bundling the
>> homogeneous component links, there is no need to have
>> hierarchy information and no need to have "strict" ERO (ie.,
>> indicate egress interface), because the node can pick up the
>> component link locally (ie., any of the component is fine).
>>
>> This should be the perfect solution.
>>
>> Is this clear now?
>>
>> ===============================================================
>> ======================================================
>> For each bundled TE link you can only have component links
>> with the same hierarchy and TSG supported, so any component
>> link of the bundled link works fine and there is no need to
>> indicate the component link ID but just the TE-link.
>>
>>
>>> " A single ISCD MAY be used for the advertisement of
>> unbundled or bundled links supporting homogeneous multiplexing
>> hierarchies and the same Tributary Slot Granularity (TSG).  A
>> different ISCD MUST be used for each different muxing
>> hierarchy (muxing tree in the following examples) and
>> different TSG supported within the TE Link, if it includes
>> component links with differing characteristics.
>>
>>
>> Thanks
>>
>> Fatai
>>
>>
>> -----邮件原件-----
>> 发件人: Daniele Ceccarelli [mailto:daniele.ceccarelli@ericsson.com]
>> 发送时间: 2012年7月19日 20:05
>> 收件人: Fatai Zhang; John E Drake; Lou Berger
>> 抄送: ccamp@ietf.org; Khuzema Pithewan;
>> zhangguoying@mail.ritt.com.cn; Linyi;
>> xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO
>> VITTORIO); Diego Caviglia; Rajan Rao;
>> IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO)
>> 主题: RE: 答复: 答复: Updates on OTN signaling draft
>>
>> Hi Fatai,
>>
>> Please find comments/replies in line
>>
>> Thanks,
>> Daniele
>>> Hi John and Daniele,
>>>
>>> It seems that people are converging. If we step further, I
>> think people
>>> can understand the bundling issue that I raised in 13rd July.
>>>
>>> The problem is how we can specify the egress interface (ID) ?
>>> To be precise, it is egress interface of penultimate node of
>> the H-LSP.
>>
>> Correct, but indeed it is the same thing, isn't it?
>>
>>> As I said in 13rd July, for a bundling link, it just shows the
>>> collection capability of all the component links and it cannot
>>> differentiate which component can support which capability.
>>>
>>> To clarify the quoted text from Daniele, the routing approach below
>>> still cannot differentiate which component can support which
>>> capability, because there is no association between one specific
>>> component link (ID) and one specific capability is advertised in the
>>> routing.
>> For each bundled TE link you can only have component links
>> with the same hierarhcy and TSG supported, so any component
>> link of the bundled link works fine and there is no need to
>> indicate the component link ID but just the TE-link.
>>
>>> ===============================================================
>>> ===============================================
>>> bundling is not a problem IMHO, as the OTN ID already states that:
>>>
>>> " A single ISCD MAY be used for the advertisement of unbundled or
>>> bundled links supporting homogeneous multiplexing hierarchies and the
>>> same Tributary Slot Granularity (TSG).  A different ISCD MUST be used
>>> for each different muxing hierarchy (muxing tree in the following
>>> examples) and different TSG supported within the TE Link, if it
>>> includes component links with differing characteristics. "
>>>
>>>
>>>
>>>
>>>
>>>
>>> Thanks
>>>
>>> Fatai
>>>
>>>
>>> -----邮件原件-----
>>> 发件人: John E Drake [mailto:jdrake@juniper.net]
>>> 发送时间: 2012年7月19日 5:01
>>> 收件人: Daniele Ceccarelli; Fatai Zhang; Lou Berger
>>> 抄送: ccamp@ietf.org; Khuzema Pithewan;
>>> zhangguoying@mail.ritt.com.cn; Linyi;
>>> xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO
>>> VITTORIO); Diego Caviglia; Rajan Rao;
>>> IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO)
>>> 主题: RE: 答复: 答复: Updates on OTN signaling draft
>>>
>>> That's fair, but perhaps we should stipulate in an RFC
>>> 3471/3473 bis that the ingress node MUST specify the egress
>>> interface in the ERO?  We seem to be spending a lot time and
>>> effort to work around this.
>>>
>>> Sent from my iPhone
>>>
>>>
>>>> -----Original Message-----
>>>> From: Daniele Ceccarelli [mailto:daniele.ceccarelli@ericsson.com]
>>>> Sent: Wednesday, July 18, 2012 10:02 AM
>>>> To: John E Drake; Fatai Zhang; Lou Berger
>>>> Cc: ccamp@ietf.org; Khuzema Pithewan;
>> zhangguoying@mail.ritt.com.cn;
>>>> Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO
>>>> VITTORIO); Diego Caviglia; Rajan Rao; IBryskin@advaoptical.com;
>>>> BELOTTI, SERGIO (SERGIO)
>>>> Subject: RE: 答复: 答复: Updates on OTN signaling draft
>>>>
>>>> Hi John,
>>>>
>>>> Yes it is, but it falls in the case I call strict ERO.
>>>> When I use the term loose ERO I refer to an ERO lacking of
>> some info
>>>> (exactly that piece of information), when I refer to a strict ERO I
>>>> speak about an ERO including info of all the hops (hence including
>>>> that piece of information, the rest of the path is
>>> meaningless in this
>>>> context).
>>>> I know the terminology is not exact but I didn't want to invent new
>>>> names when referring to an ERO with that info and ERO without it.
>>>>
>>>> BR
>>>> Daniele
>>>>
>>>>> -----Original Message-----
>>>>> From: John E Drake [mailto:jdrake@juniper.net]
>>>>> Sent: mercoledì 18 luglio 2012 17.58
>>>>> To: Daniele Ceccarelli; Fatai Zhang; Lou Berger
>>>>> Cc: ccamp@ietf.org; Khuzema Pithewan;
>>> zhangguoying@mail.ritt.com.cn;
>>>>> Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO
>>>>> VITTORIO); Diego Caviglia; Rajan Rao; IBryskin@advaoptical.com;
>>>>> BELOTTI, SERGIO
>>>>> (SERGIO)
>>>>> Subject: RE: 答复: 答复: Updates on OTN signaling draft
>>>>>
>>>>> Daniele,
>>>>>
>>>>> You are correct.  One question though, isn't it the case
>> that it is
>>>>> sufficient for the ingress to specify the egress interface
>>> in the ERO
>>>>> rather than computing a strict ERO?
>>>>>
>>>>> Thanks,
>>>>>
>>>>> John
>>>>>
>>>>> Sent from my iPhone
>>>>>
>>>>>
>>>>>> -----Original Message-----
>>>>>> From: Daniele Ceccarelli [mailto:daniele.ceccarelli@ericsson.com]
>>>>>> Sent: Wednesday, July 18, 2012 3:30 AM
>>>>>> To: John E Drake; Fatai Zhang; Lou Berger
>>>>>> Cc: ccamp@ietf.org; Khuzema Pithewan;
>>>>>> zhangguoying@mail.ritt.com.cn; Linyi; xuyunbin@mail.ritt.com.cn;
>>>>>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO); Diego Caviglia; Rajan
>>>>>> Rao; IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO)
>>>>>> Subject: RE: 答复: 答复: Updates on OTN signaling draft
>>>>>>
>>>>>> Hi John,
>>>>>>
>>>>>> partially agree. I think the hierarchy is still needed for
>>>>> those cases
>>>>>> in which 3 or more layer are being involved, in
>>> particular when the
>>>>>> penultimate node, performing the choice of the FA, receives a
>>>>>> signalling message of layer 2, needs to choose the FA at layer 3
>>>>>> and is not aware of layer 1. Let's try to make an example
>>> (switched
>>>>>> to plain text for the drawing):
>>>>>>
>>>>>>                                   ODU1-LSP
>>>>>>             .....................................................
>>>>>>             |                                                   |
>>>>>>             |                           ODU2-H-LSP              |
>>>>>>             |            +======================================+
>>>>>>             |            |                                      |
>>>>>>             |            |                                      |
>>>>>>             |            |                   ODU3-H-LSP         |
>>>>>>             |            |            |-------------------------|
>>>>>>             |            |            |                         |
>>>>>>          +--+--+      +-----+      +--+--+      +---+-+
>>>   +-----+
>>>>>>          |     |      |     |      |     |      |     |
>>>   |     |
>>>>>>          |  A  +------+  B  +------+  C  +------+  D
>>> |------+  E  |
>>>>>>          |     |      |     |      |     |      |     |
>>>   |     |
>>>>>>          +-----+      +-----+      +-----+      +-----+
>>>   +-----+
>>>>>>
>>>>>> The LSP being signaled (ODUj), from A to E is an ODU1
>>>>> (called layer 1
>>>>>> above). B receives a path message related to the ODU1 and
>>> starts a
>>>>>> signaling for an ODU2. C receives the ODU2 path message whose
>>>>>> destination is E and needs to "choose among a set
>>>>> of"/"request the set
>>>>>> up of" an ODU3 H-LSP from itself to E (loose ERO used). The
>>>>> only thing
>>>>>> that C knows is that the interface on E must be able to
>> perform an
>>>>>> ODU2->ODU3 demuxing to extract the client traffic from the ODU2.
>>>>>>
>>>>>> This is not correct, the demuxing capability required on the
>>>>> interface
>>>>>> on E is ODU1->ODU2->ODU3 and the only way to let C know it, is
>>>>>> introducing the hierarchy in signaling.
>>>>>>
>>>>>> I think this is quite a corner case, more academic
>>> speculation than
>>>>>> real case, but if there is a 0,00001% possibility it can
>>> happen, we
>>>>>> should cover the case.
>>>>>>
>>>>>> Please note that the problem does not exist using a strict
>>>>> ERO (which
>>>>>> i wuold suggest :-)
>>>>>>
>>>>>> Thanks,
>>>>>> Daniele
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> ________________________________
>>>>>>
>>>>>>   From: John E Drake [mailto:jdrake@juniper.net]
>>>>>>   Sent: martedì 17 luglio 2012 16.18
>>>>>>   To: Fatai Zhang; Lou Berger; Daniele Ceccarelli
>>>>>>   Cc: ccamp@ietf.org; Khuzema Pithewan;
>>>>> zhangguoying@mail.ritt.com.cn;
>>>>>> Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO
>> VITTORIO (PIETRO
>>>>>> VITTORIO); Diego Caviglia; Rajan Rao; IBryskin@advaoptical.com;
>>>>>> BELOTTI, SERGIO (SERGIO)
>>>>>>   Subject: RE: 答复: 答复: Updates on OTN signaling draft
>>>>>>
>>>>>>
>>>>>>
>>>>>>   Fatai,
>>>>>>
>>>>>>
>>>>>>
>>>>>>   To recap my previous emails:
>>>>>>
>>>>>>
>>>>>>
>>>>>>   1)      TSG info needs to be carried in signaling in the GPID
>>>>>>
>>>>>>   2)      Any node that performs CSPF and selects the egress
>>>>>> interface for an LSP needs to ensure that interface’s TSG is
>>>>>> compatible with the ingress interface’s TSG as indicated in
>>>>> signaling
>>>>>> (the GPID)
>>>>>>
>>>>>>   3)      Signaling should not carry hierarchy info because
>>>>>> signaling only instantiates a single ODUj
>>>>>>
>>>>>>   4)      The ingress will sequentially signal multiple ODUj LSPs,
>>>>>> each with a different value of j, in order to instantiate an OTN
>>>>>> hierarchy between a given ingress/egress pair
>>>>>>
>>>>>>
>>>>>>
>>>>>>   As an aside, just over a year ago, we had an extended
>>>>> discussion of
>>>>>> this topic in which I argued in support of the Infinera
>>> approach of
>>>>>> using a single signaling message to instantiate any necessary
>>>>>> intermediate hierarchy in support of a given client ODUj, and
>>>>>> nobody bought my arguments..
>>>>>>
>>>>>>
>>>>>>
>>>>>>   Thanks,
>>>>>>
>>>>>>
>>>>>>
>>>>>>   John
>>>>>>
>>>>>>
>>>>>>
>>>>>>   Sent from my iPhone
>>>>>>
>>>>>>
>>>>>>
>>>>>>   From: Fatai Zhang [mailto:zhangfatai@huawei.com]
>>>>>>   Sent: Monday, July 16, 2012 7:03 PM
>>>>>>   To: Lou Berger; Daniele Ceccarelli
>>>>>>   Cc: John E Drake; ccamp@ietf.org; Khuzema Pithewan;
>>>>>> zhangguoying@mail.ritt.com.cn; Linyi; xuyunbin@mail.ritt.com.cn;
>>>>>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO); Diego Caviglia;
>>>>> Rajan Rao;
>>>>>> IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO); Fatai Zhang
>>>>>>   Subject: 答复: 答复: 答复: Updates on OTN signaling draft
>>>>>>
>>>>>>
>>>>>>
>>>>>>   Hi Lou,
>>>>>>
>>>>>>
>>>>>>
>>>>>>   [snip]
>>>>>>
>>>>>>
>>>>>>
>>>>>>   Let's understand where we are, :-),
>>>>>>
>>>>>>
>>>>>>
>>>>>>   If my following understanding is not correct, please
>>>>> list some items
>>>>>> that we need to get the consensus.
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>> =================================================================
>>>>>> ======================================================
>>>>>>
>>>>>>
>>>>>>
>>>>>>   > Intra-OTN is missing, wrt actual MRN/MLN, the capability of
>>>>>> signlaing the TSG, while Inter-OTN is missing also the
>> Adaptation
>>>>>> between client and server layers (e.g. Bit-sync vs Byte-sync
>>>> mapping,
>>>>>> X.86 vs GFP etc)
>>>>>>
>>>>>>   >
>>>>>>
>>>>>>   > [snip]
>>>>>>
>>>>>>
>>>>>>
>>>>>>   fair enough.
>>>>>>
>>>>>>
>>>>>>
>>>>>>   [Fatai] Did you mean (or agree) that intra-OTN is missing the
>>>>>> capability of signaling the TSG? Should Inter-OTN be generic
>>>> MRN/MLN?
>>>>>>
>>>>>>
>>>>>>   > It appears we came to the conclusion that a general
>>>>> "intra switch
>>>>>> cap" work is needed (non OTN specific).
>>>>>>
>>>>>>   >
>>>>>>
>>>>>>   > My proposal was to include the problem statement in
>>>>> the bcg draft
>>>>>> (so to make it cover both the inter and intra cases) and
>>>>> then work on
>>>>>> a different encoding draft (I'm not sure the OTN
>> signaling is the
>>>>>> right place for general intra switch cap encoding. Maybe a
>>>>> pointer is
>>>>>> more appropriate.
>>>>>>
>>>>>>
>>>>>>
>>>>>>   Sounds workable to me (and aligned with what John was saying).
>>>>>> Now let's see if others disagree or if we have consensus!
>>>>>>
>>>>>>
>>>>>>
>>>>>>   [Fatai] I understood Daniele's proposal. However,
>>>>> focusing on OTN
>>>>>> signaling draft, did you mean that this draft (OTN signaling)
>>>>>> should focus on OTN specific (intra-OTN) as what it is or this
>>>>>> draft should remove TSG or hierachy information or bothe of them
>>>>>> (ie., GPID extension for TSG and hierachy inforamtion in LSPA)?
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>   Thanks
>>>>>>
>>>>>>
>>>>>>
>>>>>>   Fatai
>>>>>>
>>>>>>
>>>>>>
>>>>>>   -----邮件原件-----
>>>>>>   发件人: Lou Berger [mailto:lberger@labn.net]
>>>>>>   发送时间: 2012年7月16日 20:47
>>>>>>   收件人: Daniele Ceccarelli
>>>>>>   抄送: Fatai Zhang; John E Drake; ccamp@ietf.org; Khuzema
>>>>> Pithewan;
>>>>>> zhangguoying@mail.ritt.com.cn; Linyi; xuyunbin@mail.ritt.com.cn;
>>>>>> GRANDI, PIETRO VITTORIO (PIETRO VITTORIO); Diego Caviglia;
>>>>> Rajan Rao;
>>>>>> IBryskin@advaoptical.com; BELOTTI, SERGIO
>>>>>> (SERGIO)
>>>>>>   主题: Re: 答复: 答复: Updates on OTN signaling draft
>>>>>>
>>>>>>
>>>>>>
>>>>>>   [snip]
>>>>>>
>>>>>>
>>>>>
> _______________________________________________
> CCAMP mailing list
> CCAMP@ietf.org
> https://www.ietf.org/mailman/listinfo/ccamp



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From: Daniele Ceccarelli <daniele.ceccarelli@ericsson.com>
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Message-ID: <500EC06D.404@orange.com>
Date: Tue, 24 Jul 2012 17:34:05 +0200
From: Julien Meuric <julien.meuric@orange.com>
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To: John E Drake <jdrake@juniper.net>
References: <F82A4B6D50F9464B8EBA55651F541CF82CC528E5@SZXEML520-MBX.china.huawei.com> <50040D47.7000209@labn.net> <F82A4B6D50F9464B8EBA55651F541CF82CC582C7@SZXEML520-MBX.china.huawei.com> <5E893DB832F57341992548CDBB333163A5A85B5D37@EMBX01-HQ.jnpr.net> <B5630A95D803744A81C51AD4040A6DAA22AE7B9867@ESESSCMS0360.eemea.ericsson.se> <5E893DB832F57341992548CDBB333163A5A87EEF8E@EMBX01-HQ.jnpr.net> <B5630A95D803744A81C51AD4040A6DAA22AE7B9A7F@ESESSCMS0360.eemea.ericsson.se> <5E893DB832F57341992548CDBB333163A5A87EF322@EMBX01-HQ.jnpr.net> <F82A4B6D50F9464B8EBA55651F541CF82CC58E51@SZXEML520-MBX.china.huawei.com> <B5630A95D803744A81C51AD4040A6DAA22AE7B9D38@ESESSCMS0360.eemea.ericsson.se> <F82A4B6D50F9464B8EBA55651F541CF82CC59549@SZXEML520-MBX.china.huawei.com> <B5630A95D803744A81C51AD4040A6DAA22AE7BA092@ESESSCMS0360.eemea.ericsson.se> <F82A4B6D50F9464B8EBA55651F541CF82CC59E60@SZXEML520-MBX.china.huawei.com> <500D6CBC.60505@orange.com> <5E893DB832F57341992548CDBB333163A5A89F2A2D@EMBX01-HQ.jn pr.net>
In-Reply-To: <5E893DB832F57341992548CDBB333163A5A89F2A2D@EMBX01-HQ.jnpr.net>
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Hi John.

I think your sentence itself is clear. My intend was not so different 
from yours. I was trying to explicitly tackle the case where component 
links with the same hierarchy but _different TSGs in the data plane_ 
will necessarily have the _same TSG in the control plane_ if they are 
bundled (i.e. a TSG they both support).

Cheers,

Julien


Le 23/07/2012 17:45, John E Drake a écrit :
> Julian,
 >
 > I think the intent is that component links with different hierarchies
 > *or* TSGs MUST NOT be bundled. If the proposed text isn't clear on
 > this point, is my preceding sentence sufficiently clear?
 >
 > Sent from my iPhone
 >
 >> -----Original Message----- From: ccamp-bounces@ietf.org
 >> [mailto:ccamp-bounces@ietf.org] On Behalf Of Julien Meuric
 >>
 >> Hi Fatai, hi Daniele.
 >>
 >> It feels like the proposed wording is leaving out the case of
 >> "homogeneous hierarchy + different TSGs": is it on purpose?
 >>
 >> Since it is not obvious if you are talking about data plane
 >> capabilities or control plane supports, what about adding
 >> something like the following? "If component links supporting an
 >> homogeneous hierarchy but different TSGs are bundled together, the
 >> smallest commonly supported TSG SHOULD be used (i.e. fallback is
 >> forced for lower granularity components)."
 >>
 >> Regards,
 >>
 >> Julien
 >>
 >>
 >> Le 23/07/2012 05:05, Fatai Zhang a écrit :
 >>> Hi Daniele,
 >>>
 >>> If non-homogeneous component links MUST NOT be bundled together,
 >>> it
 >> means that component links with different characteristics MUST be
 >> advertised in different LSAs (as different TE links) instead of
 >> different ISCDs in the same LSA (as one single TE link).
 >>>
 >>> Therefore, I would suggest the following text by removing "and a
 >> different ISCD MUST be used for each different muxing hierarchy
 >> (muxing tree in the following examples) and different TSG supported
 >> within the TE Link, if it includes component links with differing
 >> characteristics." , because this text conflicts with " Component
 >> links supporting non homogenous hierarchies MUST NOT be bundled
 >> together".
 >>>
 >>> Hope all the people are interested in OTN protocol to review this
 >>> NEW
 >> text.
 >>>
 >>> NEW: A single ISCD MAY be used for the advertisement of unbundled
 >>> or bundled links supporting homogeneous multiplexing hierarchies
 >>> and
 >> the
 >>> same Tributary Slot Granularity (TSG). Component links
 >>> supporting
 >> non homogenous
 >>> hierarchies MUST NOT be bundled together.
 >>>
 >>>
 >>>
 >>> Thanks
 >>>
 >>> Fatai
 >>>
 >>> -----邮件原件----- 发件人: Daniele Ceccarelli
 >>> [mailto:daniele.ceccarelli@ericsson.com] 发送时间: 2012年7月20日 
17:53 收
 >>> 件人: Fatai Zhang; John E Drake; Lou Berger 抄送: ccamp@ietf.org;
 >>> Khuzema Pithewan;
 >> zhangguoying@mail.ritt.com.cn;
 >>> Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO
 >>> (PIETRO VITTORIO); Diego Caviglia; Rajan Rao;
 >>> IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO) 主题: RE: 答复: 答
 >>> 复: Updates on OTN signaling draft
 >>>
 >>> Hi Fatai,
 >>>
 >>> 1. wrt the text in the OSPF draft - I was assuming that the text
 >>> was
 >> implying that component links with non homogeneous hierarchies
 >> could not be bundled, but maybe it is bettere making it explicit.
 >> What about:
 >>>
 >>> OLD: A single ISCD MAY be used for the advertisement of unbundled
 >>> or bundled links supporting homogeneous multiplexing hierarchies
 >>> and
 >> the
 >>> same Tributary Slot Granularity (TSG). A different ISCD MUST be
 >> used
 >>> for each different muxing hierarchy (muxing tree in the
 >>> following examples) and different TSG supported within the TE
 >>> Link, if it includes component links with differing
 >>> characteristics. NEW: A single ISCD MAY be used for the
 >>> advertisement of unbundled or bundled links supporting
 >>> homogeneous multiplexing hierarchies and
 >> the
 >>> same Tributary Slot Granularity (TSG). Component links
 >> supporting non homogenous
 >>> hierarchies MUST NOT be bundled together and a different ISCD
 >> MUST be used
 >>> for each different muxing hierarchy (muxing tree in the
 >>> following examples) and different TSG supported within the TE
 >>> Link, if it includes component links with differing
 >>> characteristics.
 >>>
 >>> I just realized that the version -03 we've been working on has
 >>> not
 >> been published. I'll introduce this change in the -03 version and
 >> upload it on July 30th.
 >>>
 >>> 2. Wrt the utilization of the "strict ERO" - All the past
 >> considerations are still true as the bundling of only homogenous
 >> hierarchies has been taken into account. Hence the "strict ERO" is
 >> still needed because the information needed by the penultimate hop
 >> for the H-LSP choice is not only depending on what is the H-LSP
 >> capability but what is being carried by the LSP being signaled.
 >>>
 >>> Thanks, Daniele
 >>>
 >>>
 >>>> -----Original Message----- From: Fatai Zhang
 >>>> [mailto:zhangfatai@huawei.com] Sent: venerdì 20 luglio 2012
 >>>> 9.52 To: Daniele Ceccarelli; John E Drake; Lou Berger Cc:
 >>>> ccamp@ietf.org; Khuzema Pithewan;
 >>>> zhangguoying@mail.ritt.com.cn; Linyi;
 >>>> xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO (PIETRO
 >>>> VITTORIO); Diego Caviglia; Rajan Rao;
 >>>> IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO) Subject: 答复:
 >>>> 答复: 答复: Updates on OTN signaling draft
 >>>>
 >>>> Hi Daniele,
 >>>>
 >>>> Correct. What you said is my suggestion in 11th July (ie.,
 >>>> remove link bundling (or bundle the homogeneous component
 >>>> links).
 >>>>
 >>>> However, the quoted text from [OTN-OSPF] draft, it allows to
 >>>> bundle heterogeneous component links by different ISCDs. If it
 >>>> states explicitly that only homogeneous component links could
 >>>> be bundled (ie., heterogeneous component links MUST not
 >>>> bundled), then what you said below is completely correct.
 >>>>
 >>>> Let's step further, if no bundling or only bundling the
 >>>> homogeneous component links, there is no need to have hierarchy
 >>>> information and no need to have "strict" ERO (ie., indicate
 >>>> egress interface), because the node can pick up the component
 >>>> link locally (ie., any of the component is fine).
 >>>>
 >>>> This should be the perfect solution.
 >>>>
 >>>> Is this clear now?
 >>>>
 >>>> ===============================================================
 >>>>
 >>>>
 >>>>
 >>>>
======================================================
>>>> For each bundled TE  link you can only have component links with
 >>>> the same hierarchy and TSG supported, so any component link of
 >>>> the bundled link works fine and there is no need to indicate
 >>>> the component link ID but just the TE-link.
 >>>>
 >>>>
 >>>>> " A single ISCD MAY be used for the advertisement of
 >>>> unbundled or bundled links supporting homogeneous multiplexing
 >>>> hierarchies and the same Tributary Slot Granularity (TSG). A
 >>>> different ISCD MUST be used for each different muxing hierarchy
 >>>> (muxing tree in the following examples) and different TSG
 >>>> supported within the TE Link, if it includes component links
 >>>> with differing characteristics.
 >>>>
 >>>>
 >>>> Thanks
 >>>>
 >>>> Fatai
 >>>>
 >>>>
 >>>> -----邮件原件----- 发件人: Daniele Ceccarelli
 >>>> [mailto:daniele.ceccarelli@ericsson.com] 发送时间: 2012年7月19日
 >>>> 20:05 收件人: Fatai Zhang; John E Drake; Lou Berger 抄送:
 >>>> ccamp@ietf.org; Khuzema Pithewan;
 >> zhangguoying@mail.ritt.com.cn;
 >>>> Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO
 >>>> (PIETRO VITTORIO); Diego Caviglia; Rajan Rao;
 >>>> IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO) 主题: RE: 答复:
 >>>> 答复: Updates on OTN signaling draft
 >>>>
 >>>> Hi Fatai,
 >>>>
 >>>> Please find comments/replies in line
 >>>>
 >>>> Thanks, Daniele
 >>>>> Hi John and Daniele,
 >>>>>
 >>>>> It seems that people are converging. If we step further, I
 >>>> think people
 >>>>> can understand the bundling issue that I raised in 13rd
 >>>>> July.
 >>>>>
 >>>>> The problem is how we can specify the egress interface (ID)
 >>>>> ? To be precise, it is egress interface of penultimate node
 >>>>> of
 >>>> the H-LSP.
 >>>>
 >>>> Correct, but indeed it is the same thing, isn't it?
 >>>>
 >>>>> As I said in 13rd July, for a bundling link, it just shows
 >>>>> the collection capability of all the component links and it
 >>>>> cannot differentiate which component can support which
 >>>>> capability.
 >>>>>
 >>>>> To clarify the quoted text from Daniele, the routing approach
 >>>>> below still cannot differentiate which component can support
 >>>>> which capability, because there is no association between one
 >>>>> specific component link (ID) and one specific capability is
 >>>>> advertised in
 >> the
 >>>>> routing.
 >>>> For each bundled TE link you can only have component links with
 >>>> the same hierarhcy and TSG supported, so any component link of
 >>>> the bundled link works fine and there is no need to indicate
 >>>> the component link ID but just the TE-link.
 >>>>
 >>>>> ===============================================================
 >>>>>
 >>>>>
 >>>>>
 >>>>>
===============================================
>>>>> bundling is not  a problem IMHO, as the OTN ID already states
 >>>>> that:
 >>>>>
 >>>>> " A single ISCD MAY be used for the advertisement of
 >>>>> unbundled or bundled links supporting homogeneous
 >>>>> multiplexing hierarchies and the same Tributary Slot
 >>>>> Granularity (TSG). A different ISCD MUST
 >> be
 >>>>> used for each different muxing hierarchy (muxing tree in the
 >>>>> following examples) and different TSG supported within the TE
 >>>>> Link, if it includes component links with differing
 >>>>> characteristics. "
 >>>>>
 >>>>>
 >>>>>
 >>>>>
 >>>>>
 >>>>>
 >>>>> Thanks
 >>>>>
 >>>>> Fatai
 >>>>>
 >>>>>
 >>>>> -----邮件原件----- 发件人: John E Drake [mailto:jdrake@juniper.net]
 >>>>> 发送时间: 2012年7月19日 5:01 收件人: Daniele Ceccarelli; Fatai 
Zhang;
 >>>>> Lou Berger 抄送: ccamp@ietf.org; Khuzema Pithewan;
 >> zhangguoying@mail.ritt.com.cn;
 >>>>> Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO
 >>>>> (PIETRO VITTORIO); Diego Caviglia; Rajan Rao;
 >>>>> IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO) 主题: RE: 答
 >>>>> 复: 答复: Updates on OTN signaling draft
 >>>>>
 >>>>> That's fair, but perhaps we should stipulate in an RFC
 >>>>> 3471/3473 bis that the ingress node MUST specify the egress
 >>>>> interface in the ERO? We seem to be spending a lot time and
 >>>>> effort to work around this.
 >>>>>
 >>>>> Sent from my iPhone
 >>>>>
 >>>>>
 >>>>>> -----Original Message----- From: Daniele Ceccarelli
 >>>>>> [mailto:daniele.ceccarelli@ericsson.com] Sent: Wednesday,
 >>>>>> July 18, 2012 10:02 AM To: John E Drake; Fatai Zhang; Lou
 >>>>>> Berger Cc: ccamp@ietf.org; Khuzema Pithewan;
 >>>> zhangguoying@mail.ritt.com.cn;
 >>>>>> Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO
 >>>>>> (PIETRO VITTORIO); Diego Caviglia; Rajan Rao;
 >>>>>> IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO) Subject:
 >>>>>> RE: 答复: 答复: Updates on OTN signaling draft
 >>>>>>
 >>>>>> Hi John,
 >>>>>>
 >>>>>> Yes it is, but it falls in the case I call strict ERO. When
 >>>>>> I use the term loose ERO I refer to an ERO lacking of
 >>>> some info
 >>>>>> (exactly that piece of information), when I refer to a
 >>>>>> strict ERO
 >> I
 >>>>>> speak about an ERO including info of all the hops (hence
 >>>>>> including that piece of information, the rest of the path
 >>>>>> is
 >>>>> meaningless in this
 >>>>>> context). I know the terminology is not exact but I didn't
 >>>>>> want to invent
 >> new
 >>>>>> names when referring to an ERO with that info and ERO
 >>>>>> without it.
 >>>>>>
 >>>>>> BR Daniele
 >>>>>>
 >>>>>>> -----Original Message----- From: John E Drake
 >>>>>>> [mailto:jdrake@juniper.net] Sent: mercoledì 18 luglio
 >>>>>>> 2012 17.58 To: Daniele Ceccarelli; Fatai Zhang; Lou
 >>>>>>> Berger Cc: ccamp@ietf.org; Khuzema Pithewan;
 >>>>> zhangguoying@mail.ritt.com.cn;
 >>>>>>> Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO
 >>>>>>> (PIETRO VITTORIO); Diego Caviglia; Rajan Rao;
 >>>>>>> IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO)
 >>>>>>> Subject: RE: 答复: 答复: Updates on OTN signaling draft
 >>>>>>>
 >>>>>>> Daniele,
 >>>>>>>
 >>>>>>> You are correct. One question though, isn't it the case
 >>>> that it is
 >>>>>>> sufficient for the ingress to specify the egress
 >>>>>>> interface
 >>>>> in the ERO
 >>>>>>> rather than computing a strict ERO?
 >>>>>>>
 >>>>>>> Thanks,
 >>>>>>>
 >>>>>>> John
 >>>>>>>
 >>>>>>> Sent from my iPhone
 >>>>>>>
 >>>>>>>
 >>>>>>>> -----Original Message----- From: Daniele Ceccarelli
 >> [mailto:daniele.ceccarelli@ericsson.com]
 >>>>>>>> Sent: Wednesday, July 18, 2012 3:30 AM To: John E
 >>>>>>>> Drake; Fatai Zhang; Lou Berger Cc: ccamp@ietf.org;
 >>>>>>>> Khuzema Pithewan; zhangguoying@mail.ritt.com.cn; Linyi;
 >>>>>>>> xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO
 >>>>>>>> (PIETRO VITTORIO); Diego Caviglia; Rajan Rao;
 >>>>>>>> IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO)
 >>>>>>>> Subject: RE: 答复: 答复: Updates on OTN signaling draft
 >>>>>>>>
 >>>>>>>> Hi John,
 >>>>>>>>
 >>>>>>>> partially agree. I think the hierarchy is still needed
 >>>>>>>> for
 >>>>>>> those cases
 >>>>>>>> in which 3 or more layer are being involved, in
 >>>>> particular when the
 >>>>>>>> penultimate node, performing the choice of the FA,
 >>>>>>>> receives a signalling message of layer 2, needs to
 >>>>>>>> choose the FA at layer 3 and is not aware of layer 1.
 >>>>>>>> Let's try to make an example
 >>>>> (switched
 >>>>>>>> to plain text for the drawing):
 >>>>>>>>
 >>>>>>>> ODU1-LSP
 >>>>>>>>
 >> .....................................................
 >>>>>>>> |
 >> |
 >>>>>>>> | ODU2-H-LSP
 >> |
 >>>>>>>> |
 >> +======================================+
 >>>>>>>> | |
 >> |
 >>>>>>>> | |
 >> |
 >>>>>>>> | | ODU3-H-LSP
 >> |
 >>>>>>>> | | |-------------------------
 >> |
 >>>>>>>> | | |
 >> |
 >>>>>>>> +--+--+ +-----+ +--+--+ +---+-+
 >>>>> +-----+
 >>>>>>>> | | | | | | | |
 >>>>> | |
 >>>>>>>> | A +------+ B +------+ C +------+ D
 >>>>> |------+ E |
 >>>>>>>> | | | | | | | |
 >>>>> | |
 >>>>>>>> +-----+ +-----+ +-----+ +-----+
 >>>>> +-----+
 >>>>>>>>
 >>>>>>>> The LSP being signaled (ODUj), from A to E is an ODU1
 >>>>>>> (called layer 1
 >>>>>>>> above). B receives a path message related to the ODU1
 >>>>>>>> and
 >>>>> starts a
 >>>>>>>> signaling for an ODU2. C receives the ODU2 path message
 >>>>>>>> whose destination is E and needs to "choose among a
 >>>>>>>> set
 >>>>>>> of"/"request the set
 >>>>>>>> up of" an ODU3 H-LSP from itself to E (loose ERO used).
 >>>>>>>> The
 >>>>>>> only thing
 >>>>>>>> that C knows is that the interface on E must be able
 >>>>>>>> to
 >>>> perform an
 >>>>>>>> ODU2->ODU3 demuxing to extract the client traffic from
 >>>>>>>> the ODU2.
 >>>>>>>>
 >>>>>>>> This is not correct, the demuxing capability required
 >>>>>>>> on the
 >>>>>>> interface
 >>>>>>>> on E is ODU1->ODU2->ODU3 and the only way to let C know
 >>>>>>>> it, is introducing the hierarchy in signaling.
 >>>>>>>>
 >>>>>>>> I think this is quite a corner case, more academic
 >>>>> speculation than
 >>>>>>>> real case, but if there is a 0,00001% possibility it
 >>>>>>>> can
 >>>>> happen, we
 >>>>>>>> should cover the case.
 >>>>>>>>
 >>>>>>>> Please note that the problem does not exist using a
 >>>>>>>> strict
 >>>>>>> ERO (which
 >>>>>>>> i wuold suggest :-)
 >>>>>>>>
 >>>>>>>> Thanks, Daniele
 >>>>>>>>
 >>>>>>>>
 >>>>>>>>
 >>>>>>>>
 >>>>>>>> ________________________________
 >>>>>>>>
 >>>>>>>> From: John E Drake [mailto:jdrake@juniper.net] Sent:
 >>>>>>>> martedì 17 luglio 2012 16.18 To: Fatai Zhang; Lou
 >>>>>>>> Berger; Daniele Ceccarelli Cc: ccamp@ietf.org; Khuzema
 >>>>>>>> Pithewan;
 >>>>>>> zhangguoying@mail.ritt.com.cn;
 >>>>>>>> Linyi; xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO
 >>>> VITTORIO (PIETRO
 >>>>>>>> VITTORIO); Diego Caviglia; Rajan Rao;
 >>>>>>>> IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO)
 >>>>>>>> Subject: RE: 答复: 答复: Updates on OTN signaling draft
 >>>>>>>>
 >>>>>>>>
 >>>>>>>>
 >>>>>>>> Fatai,
 >>>>>>>>
 >>>>>>>>
 >>>>>>>>
 >>>>>>>> To recap my previous emails:
 >>>>>>>>
 >>>>>>>>
 >>>>>>>>
 >>>>>>>> 1) TSG info needs to be carried in signaling in
 >>>>>>>> the GPID
 >>>>>>>>
 >>>>>>>> 2) Any node that performs CSPF and selects the
 >>>>>>>> egress interface for an LSP needs to ensure that
 >>>>>>>> interface’s TSG is compatible with the ingress
 >>>>>>>> interface’s TSG as indicated in
 >>>>>>> signaling
 >>>>>>>> (the GPID)
 >>>>>>>>
 >>>>>>>> 3) Signaling should not carry hierarchy info
 >>>>>>>> because signaling only instantiates a single ODUj
 >>>>>>>>
 >>>>>>>> 4) The ingress will sequentially signal multiple
 >>>>>>>> ODUj
 >> LSPs,
 >>>>>>>> each with a different value of j, in order to
 >>>>>>>> instantiate an OTN hierarchy between a given
 >>>>>>>> ingress/egress pair
 >>>>>>>>
 >>>>>>>>
 >>>>>>>>
 >>>>>>>> As an aside, just over a year ago, we had an extended
 >>>>>>> discussion of
 >>>>>>>> this topic in which I argued in support of the
 >>>>>>>> Infinera
 >>>>> approach of
 >>>>>>>> using a single signaling message to instantiate any
 >>>>>>>> necessary intermediate hierarchy in support of a given
 >>>>>>>> client ODUj, and nobody bought my arguments..
 >>>>>>>>
 >>>>>>>>
 >>>>>>>>
 >>>>>>>> Thanks,
 >>>>>>>>
 >>>>>>>>
 >>>>>>>>
 >>>>>>>> John
 >>>>>>>>
 >>>>>>>>
 >>>>>>>>
 >>>>>>>> Sent from my iPhone
 >>>>>>>>
 >>>>>>>>
 >>>>>>>>
 >>>>>>>> From: Fatai Zhang [mailto:zhangfatai@huawei.com] Sent:
 >>>>>>>> Monday, July 16, 2012 7:03 PM To: Lou Berger; Daniele
 >>>>>>>> Ceccarelli Cc: John E Drake; ccamp@ietf.org; Khuzema
 >>>>>>>> Pithewan; zhangguoying@mail.ritt.com.cn; Linyi;
 >>>>>>>> xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO
 >>>>>>>> (PIETRO VITTORIO); Diego Caviglia;
 >>>>>>> Rajan Rao;
 >>>>>>>> IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO);
 >>>>>>>> Fatai Zhang Subject: 答复: 答复: 答复: Updates on OTN
 >>>>>>>> signaling draft
 >>>>>>>>
 >>>>>>>>
 >>>>>>>>
 >>>>>>>> Hi Lou,
 >>>>>>>>
 >>>>>>>>
 >>>>>>>>
 >>>>>>>> [snip]
 >>>>>>>>
 >>>>>>>>
 >>>>>>>>
 >>>>>>>> Let's understand where we are, :-),
 >>>>>>>>
 >>>>>>>>
 >>>>>>>>
 >>>>>>>> If my following understanding is not correct, please
 >>>>>>> list some items
 >>>>>>>> that we need to get the consensus.
 >>>>>>>>
 >>>>>>>>
 >>>>>>>>
 >>>>>>>>
 >>>>>>> =================================================================
 >>>>>>>>
 >>>>>>>
 >>>>>>>
 >>>>>>>
======================================================
>>>>>>>>
 >>>>>>>>
 >>>>>>>>
 >>>>>>>>> Intra-OTN is missing, wrt actual MRN/MLN, the
 >>>>>>>>> capability of
 >>>>>>>> signlaing the TSG, while Inter-OTN is missing also the
 >>>> Adaptation
 >>>>>>>> between client and server layers (e.g. Bit-sync vs
 >>>>>>>> Byte-sync
 >>>>>> mapping,
 >>>>>>>> X.86 vs GFP etc)
 >>>>>>>>
 >>>>>>>>>
 >>>>>>>>
 >>>>>>>>> [snip]
 >>>>>>>>
 >>>>>>>>
 >>>>>>>>
 >>>>>>>> fair enough.
 >>>>>>>>
 >>>>>>>>
 >>>>>>>>
 >>>>>>>> [Fatai] Did you mean (or agree) that intra-OTN is
 >>>>>>>> missing the capability of signaling the TSG? Should
 >>>>>>>> Inter-OTN be generic
 >>>>>> MRN/MLN?
 >>>>>>>>
 >>>>>>>>
 >>>>>>>>> It appears we came to the conclusion that a general
 >>>>>>> "intra switch
 >>>>>>>> cap" work is needed (non OTN specific).
 >>>>>>>>
 >>>>>>>>>
 >>>>>>>>
 >>>>>>>>> My proposal was to include the problem statement in
 >>>>>>> the bcg draft
 >>>>>>>> (so to make it cover both the inter and intra cases)
 >>>>>>>> and
 >>>>>>> then work on
 >>>>>>>> a different encoding draft (I'm not sure the OTN
 >>>> signaling is the
 >>>>>>>> right place for general intra switch cap encoding.
 >>>>>>>> Maybe a
 >>>>>>> pointer is
 >>>>>>>> more appropriate.
 >>>>>>>>
 >>>>>>>>
 >>>>>>>>
 >>>>>>>> Sounds workable to me (and aligned with what John was
 >>>>>>>> saying). Now let's see if others disagree or if we have
 >>>>>>>> consensus!
 >>>>>>>>
 >>>>>>>>
 >>>>>>>>
 >>>>>>>> [Fatai] I understood Daniele's proposal. However,
 >>>>>>> focusing on OTN
 >>>>>>>> signaling draft, did you mean that this draft (OTN
 >>>>>>>> signaling) should focus on OTN specific (intra-OTN) as
 >>>>>>>> what it is or this draft should remove TSG or hierachy
 >>>>>>>> information or bothe of them (ie., GPID extension for
 >>>>>>>> TSG and hierachy inforamtion in LSPA)?
 >>>>>>>>
 >>>>>>>>
 >>>>>>>>
 >>>>>>>>
 >>>>>>>>
 >>>>>>>> Thanks
 >>>>>>>>
 >>>>>>>>
 >>>>>>>>
 >>>>>>>> Fatai
 >>>>>>>>
 >>>>>>>>
 >>>>>>>>
 >>>>>>>> -----邮件原件----- 发件人: Lou Berger
 >>>>>>>> [mailto:lberger@labn.net] 发送时间: 2012年7月16日 20:47 收件人:
 >>>>>>>> Daniele Ceccarelli 抄送: Fatai Zhang; John E Drake;
 >>>>>>>> ccamp@ietf.org; Khuzema
 >>>>>>> Pithewan;
 >>>>>>>> zhangguoying@mail.ritt.com.cn; Linyi;
 >>>>>>>> xuyunbin@mail.ritt.com.cn; GRANDI, PIETRO VITTORIO
 >>>>>>>> (PIETRO VITTORIO); Diego Caviglia;
 >>>>>>> Rajan Rao;
 >>>>>>>> IBryskin@advaoptical.com; BELOTTI, SERGIO (SERGIO) 主题:
 >>>>>>>> Re: 答复: 答复: Updates on OTN signaling draft
 >>>>>>>>
 >>>>>>>>
 >>>>>>>>
 >>>>>>>> [snip]
 >>>>>>>>
 >>>>>>>>
 >>>>>>>
 >>> _______________________________________________ CCAMP mailing
 >>> list CCAMP@ietf.org https://www.ietf.org/mailman/listinfo/ccamp
 >>
 >>
 >> _______________________________________________ CCAMP mailing list
 >> CCAMP@ietf.org https://www.ietf.org/mailman/listinfo/ccamp




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Subject: Re: [CCAMP] IETF 84 Draft Agenda Posted
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A slightly modified version has been posted.  Please let us (Daniele &
Dan + chairs) know if you comments or if we missed anything.

Much thanks,
Lou (Deborah, Daniele & Dan)

On 7/18/2012 6:29 PM, Lou Berger wrote:
> All,
> 	The draft agenda for Vancouver is available at:
> http://www.ietf.org/proceedings/84/agenda/agenda-84-ccamp
> 
> Please let us (Daniele & Dan + chairs) know if you have comments or if
> we missed anything.
> 
> Much thanks,
> Lou (Deborah, Daniele & Dan)
> _______________________________________________
> CCAMP mailing list
> CCAMP@ietf.org
> https://www.ietf.org/mailman/listinfo/ccamp
> 
> 
> 
> 

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From: "BRUNGARD, DEBORAH A" <db3546@att.com>
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Subject: Re: [CCAMP] WG Last Call draft-ietf-ccamp-rsvp-te-mpls-tp-oam-ext-08
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This WG Last Call has ended.

Authors, please address the comments.

Thanks,
Deborah and Lou

-----Original Message-----
From: mpls-bounces@ietf.org [mailto:mpls-bounces@ietf.org] On Behalf Of BRU=
NGARD, DEBORAH A
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Subject: [mpls] WG Last Call draft-ietf-ccamp-rsvp-te-mpls-tp-oam-ext-08

*** Security Advisory: This Message Originated Outside of AT&T ***.
Reference http://cso.att.com/EmailSecurity/IDSP.html for more information.

Working Group(s),

This is to start a Working Group Last Call on draft-ietf-ccamp-rsvp-te-mpls=
-tp-oam-ext-08.

Please send your comments to the CCAMP WG mailing list.

This working group last call ends July 24th.

Deborah (and Lou)


_______________________________________________
mpls mailing list
mpls@ietf.org
https://www.ietf.org/mailman/listinfo/mpls

From iesg-secretary@ietf.org  Thu Jul 26 13:11:06 2012
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Subject: [CCAMP] Last Call: <draft-ietf-ccamp-dpm-06.txt> (Label Switched Path (LSP)	Data Path Delay Metrics in Generalized MPLS/ MPLS-TE Networks)	to Proposed Standard
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The IESG has received a request from the Common Control and Measurement
Plane WG (ccamp) to consider the following document:
- 'Label Switched Path (LSP) Data Path Delay Metrics in Generalized MPLS/
   MPLS-TE Networks'
  <draft-ietf-ccamp-dpm-06.txt> as Proposed Standard

The IESG plans to make a decision in the next few weeks, and solicits
final comments on this action. Please send substantive comments to the
ietf@ietf.org mailing lists by 2012-08-15. Exceptionally, comments may be
sent to iesg@ietf.org instead. In either case, please retain the
beginning of the Subject line to allow automated sorting. The IETF last 
call has been extended because it spans the IETF-84 meeting.

Abstract

   When setting up a label switched path (LSP) in Generalized MPLS and
   MPLS/TE networks, the completion of the signaling process does not
   necessarily mean that the cross connection along the LSP have been
   programmed accordingly and in a timely manner.  Meanwhile, the
   completion of signaling process may be used by applications as
   indication that data path has become usable.  The existence of this
   delay and the possible failure of cross connection programming, if
   not properly treated, will result in data loss or even application
   failure.  Characterization of this performance can thus help
   designers to improve the application model and to build more robust
   applications.  This document defines a series of performance metrics
   to evaluate the connectivity of data path in the signaling process.


The file can be obtained via
http://datatracker.ietf.org/doc/draft-ietf-ccamp-dpm/

IESG discussion can be tracked via
http://datatracker.ietf.org/doc/draft-ietf-ccamp-dpm/ballot/


No IPR declarations have been submitted directly on this I-D.



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Subject: [CCAMP] RFC 6689 on Usage of the RSVP ASSOCIATION Object
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A new Request for Comments is now available in online RFC libraries.

        
        RFC 6689

        Title:      Usage of the RSVP ASSOCIATION 
                    Object 
        Author:     L. Berger
        Status:     Informational
        Stream:     IETF
        Date:       July 2012
        Mailbox:    lberger@labn.net
        Pages:      11
        Characters: 26037
        Updates/Obsoletes/SeeAlso:   None

        I-D Tag:    draft-ietf-ccamp-assoc-info-03.txt

        URL:        http://www.rfc-editor.org/rfc/rfc6689.txt

The Resource Reservation Protocol (RSVP) ASSOCIATION object is defined in the
context of GMPLS-controlled label switched paths (LSPs).  In this context,
the object is used to associate recovery LSPs with the LSP they are
protecting.  This document reviews how the association is to be provided in
the context of GMPLS recovery.  No new procedures or mechanisms are
defined by this document, and it is strictly informative in nature.  This 
document is not an Internet Standards Track specification; it is 
published for informational purposes.

This document is a product of the Common Control and Measurement Plane Working Group of the IETF.


INFORMATIONAL: This memo provides information for the Internet community.
It does not specify an Internet standard of any kind. Distribution of
this memo is unlimited.

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Association Management Solutions, LLC



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To: daniele.ceccarelli@ericsson.com, diego.caviglia@ericsson.com, zhangfatai@huawei.com, danli@huawei.com, sergio.belotti@alcatel-lucent.com,  pietro_vittorio.grandi@alcatel-lucent.com, rrao@infinera.com, kpithewan@infinera.com, jdrake@juniper.net
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Date: Thu, 26 Jul 2012 18:02:06 -0700
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Subject: [CCAMP] IPR Disclosure: Infinera Corporation's Statement about IPR related to	draft-ietf-ccamp-gmpls-ospf-g709v3-02
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Dear Daniele Ceccarelli, Diego Caviglia, Fatai Zhang, Dan Li, Sergio Belott=
i, Pietro Grandi, Rajan Rao, Khuzema Pithewan, John Drake:

 An IPR disclosure that pertains to your Internet-Draft entitled "Traffic
Engineering Extensions to OSPF for Generalized MPLS (GMPLS) Control of Evol=
ving
G.709 OTN Networks" (draft-ietf-ccamp-gmpls-ospf-g709v3) was submitted to t=
he
IETF Secretariat on 2012-07-25 and has been posted on the "IETF Page of
Intellectual Property Rights Disclosures"
(https://datatracker.ietf.org/ipr/1835/). The title of the IPR disclosure is
"Infinera Corporation's Statement about IPR related to draft-ietf-ccamp-gmp=
ls-
ospf-g709v3-02."");

The IETF Secretariat


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From: IETF Secretariat <ietf-ipr@ietf.org>
To: daniele.ceccarelli@ericsson.com, zhangfatai@huawei.com, zhangguoying@mail.ritt.com.cn, kpithewan@infinera.com, sergio.belotti@alcatel-lucent.it
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Subject: [CCAMP] IPR Disclosure: Infinera Corporation's Statement about IPR related to	draft-ietf-ccamp-gmpls-signaling-g709v3-03
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Dear Daniele Ceccarelli, Fatai Zhang, Guoying Zhang, Khuzema Pithewan, Serg=
io Belotti:

 An IPR disclosure that pertains to your Internet-Draft entitled "Generaliz=
ed
Multi-Protocol Label Switching (GMPLS) Signaling Extensions for the evolving
G.709 Optical Transport Networks Control" (draft-ietf-ccamp-gmpls-signaling-
g709v3) was submitted to the IETF Secretariat on 2012-07-25 and has been po=
sted
on the "IETF Page of Intellectual Property Rights Disclosures"
(https://datatracker.ietf.org/ipr/1836/). The title of the IPR disclosure is
"Infinera Corporation's Statement about IPR related to draft-ietf-ccamp-gmp=
ls-
signaling-g709v3-03."");

The IETF Secretariat


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From: "Giovanni Martinelli (giomarti)" <giomarti@cisco.com>
To: "Ong, Lyndon" <Lyong@Ciena.com>
Thread-Topic: [CCAMP]  FW:  Optical int class, changes to draft-ietf-ccamp-rwa-info-14
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References: <7AEB3D6833318045B4AE71C2C87E8E1720CB5A47@dfweml511-mbx.china.huawei.com> <4FE2358E.5050809@cisco.com> <F82A4B6D50F9464B8EBA55651F541CF82CC3486D@SZXEML520-MBX.china.huawei.com> <4FE89453.8090103@cisco.com> <F82A4B6D50F9464B8EBA55651F541CF82CC3B2FF@SZXEML520-MBX.china.huawei.com> <4FEDEB12.5060105@grotto-networking.com>	<4FF58352.8030102@cisco.com> <4FFAFA4B.5040707@grotto-networking.com> <4FFC0352.8030000@orange.com> <A0B4FC0A5EFBD44585414760DB4FD274969AFF2D@MDWEXGMB02.ciena.com>
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From giomarti@cisco.com  Mon Jul 30 14:15:52 2012
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From: "Giovanni Martinelli (giomarti)" <giomarti@cisco.com>
To: Lou Berger <lberger@labn.net>
Thread-Topic: [CCAMP] Request to WG authors/editors (for Vancouver)
Thread-Index: AQHNY2/uXukDk0l7Qk2AZ+TQbX2Y/ZdCvfEA
Date: Mon, 30 Jul 2012 21:15:50 +0000
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Hi Lou,

regarding WSON Signaling draft http://tools.ietf.org/html/draft-ietf-ccamp-=
wson-signaling-03 no updates for this ietf. Here a rough  plan for the next=
 version
- wson object waiting discussion  on http://tools.ietf.org/html/draft-marga=
ria-ccamp-lsp-attribute-ero-01 at next ccamp session.
- fix bfn and related references (comment from you at the mic ietf83)
- comments from Cyril mail.

Cheers
G



On Jul 16, 2012, at 18:27 , Lou Berger wrote:

> Authors of WG documents,
> 	As with the last meeting: Please plan to review (present) any changes
> that have been recently made to your draft, as well as any plans for, or
> open issues with the draft at the upcoming meeting.  If there have been
> no recent changes, please present open issues and your plans for moving
> the draft forward. If you have not already done so, please respond to
> Daniele's agenda request mail to schedule your presentation time.
>=20
> If you don't need a full slot for the draft, please be prepared to say a
> few words on document status/progress/planned revisions in our first
> session.  Alternatively, you can send this information to the WG mail
> list prior to the WG meeting.
>=20
> The agenda has us meeting:
>=20
> WEDNESDAY, August 1, 2012 	0900-1130 	Morning Session I
> THURSDAY, August 2, 2012 	1300-1500 	Afternoon Session I
>=20
> Much thanks.
> Lou and Deborah
> _______________________________________________
> CCAMP mailing list
> CCAMP@ietf.org
> https://www.ietf.org/mailman/listinfo/ccamp


From giomarti@cisco.com  Mon Jul 30 15:34:39 2012
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From: "Giovanni Martinelli (giomarti)" <giomarti@cisco.com>
To: CCAMP <ccamp@ietf.org>
Thread-Topic: Comment on draft-ietf-ccamp-general-constraint-encode-08: priority
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Date: Mon, 30 Jul 2012 22:34:37 +0000
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Subject: [CCAMP] Comment on draft-ietf-ccamp-general-constraint-encode-08: priority
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Dear authors / ccamp,

here a few comments related to the priority field added to draft-ietf-ccamp=
-general-constraint-encode:

A couple of editorial comments
1)  "wavelenght priority" appears in a draft that claim to be general. In f=
act is available in "Available Labels Sub-TLV" and "Shared Backup Labels Su=
b-TLV". So is a wavelength or label-like priority?
2)  why an 8 bits (bit field) instead of the classic 3 bits (integer [0 .. =
7]?


Then few other comments
3)  How the priority is used versus the A flag . Draft text report
" =20
   A (Availability bit) =3D 1 or 0 indicates that the labels listed in
   the following label set field are available or not available,
   respectively, for use at a given priority level as indicated by the
   Priority Flags.

"
So does it means that there could be different "available labels sub-TLVs" =
advertised?=20

4) Still unclear to me how this priority is different from the one reported=
 in http://tools.ietf.org/html/draft-kattan-wson-property-01 and eventually=
 if this "priority" could fit the LSP priority already available (as one of=
 the comment we received at that time)

Cheers
G


From kpithewan@infinera.com  Mon Jul 30 17:53:42 2012
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From: Khuzema Pithewan <kpithewan@infinera.com>
To: "draft-bcg-ccamp-gmpls-ml-implications@tools.ietf.org" <draft-bcg-ccamp-gmpls-ml-implications@tools.ietf.org>, "CCAMP (ccamp@ietf.org)" <ccamp@ietf.org>
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Authors/WG,

RFC 5212 is generic enough to state requirements for MLN and MRN cases and =
we think that it equally applies to OTN as well. We have captured the curre=
nt issues that requires to be resolved to crystalize MLN/MRN solution for O=
TN and 2 potential solution for these issues.

We are attaching the ppt capturing details.

Would like to discuss these options and see what is the preference of WG. P=
ls review and let us know questions/comments.

Regards
Khuzema/Rajan


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<p class=3D"MsoNormal">Authors/WG,<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">RFC 5212 is generic enough to state requirements for=
 MLN and MRN cases and we think that it equally applies to OTN as well. We =
have captured the current issues that requires to be resolved to crystalize=
 MLN/MRN solution for OTN and 2 potential
 solution for these issues.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">We are attaching the ppt capturing details.<o:p></o:=
p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Would like to discuss these options and see what is =
the preference of WG. Pls review and let us know questions/comments.<o:p></=
o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Regards<o:p></o:p></p>
<p class=3D"MsoNormal">Khuzema/Rajan<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
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A New Internet-Draft is available from the on-line Internet-Drafts director=
ies.
 This draft is a work item of the Common Control and Measurement Plane Work=
ing Group of the IETF.

	Title           : Link Management Protocol Behavior Negotiation and Config=
uration Modifications
	Author(s)       : Dan Li
                          Daniele Ceccarelli
                          Lou Berger
	Filename        : draft-ietf-ccamp-lmp-behavior-negotiation-06.txt
	Pages           : 11
	Date            : 2012-07-30

Abstract:
   The Link Management Protocol (LMP) is used to coordinate the
   properties, use, and faults of data links in Generalized
   Multiprotocol Label Switching (GMPLS) networks. This document
   defines an extension to LMP to negotiate capabilities and indicate
   support for LMP extensions. The defined extension is compatible
   with non-supporting implementations.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-ccamp-lmp-behavior-negotiation

There's also a htmlized version available at:
http://tools.ietf.org/html/draft-ietf-ccamp-lmp-behavior-negotiation-06

A diff from the previous version is available at:
http://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-ccamp-lmp-behavior-negotiatio=
n-06


Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/


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From wwwrun@rfc-editor.org  Tue Jul 31 09:39:50 2012
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Subject: [CCAMP] [Technical Errata Reported] RFC4872 (3304)
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The following errata report has been submitted for RFC4872,
"RSVP-TE Extensions in Support of End-to-End Generalized Multi-Protocol Label Switching (GMPLS) Recovery".

--------------------------------------
You may review the report below and at:
http://www.rfc-editor.org/errata_search.php?rfc=4872&eid=3304

--------------------------------------
Type: Technical
Reported by: Lyndon Ong <lyong@ciena.com>

Section: 11 & 12

Original Text
-------------
Section 11 says:


   (Full) LSP rerouting will be initiated by the head-end node that has
   either detected the LSP failure or received a Notify message and/or a
   PathErr message with the new error code/sub-code "Notify Error/LSP
   Locally Failed" for this LSP.  The new LSP resources can be
   established using the make-before-break mechanism, where the new LSP
   is set up before the old LSP is torn down.  This is done by using the
   mechanisms of the SESSION_ATTRIBUTE object and the Shared-Explicit
   (SE) reservation style (see [RFC3209]).  Both the new and old LSPs
   can share resources at common nodes.

Section 12 says:

   [No text on reversion for (full) LSP Rerouting.]

Corrected Text
--------------
Section 11 should say:


   (Full) LSP rerouting will be initiated by the head-end node that has
   either detected the LSP failure or received a Notify message and/or a
   PathErr message with the new error code/sub-code "Notify Error/LSP
   Locally Failed" for this LSP.  The new LSP resources can be
   established using the make-before-break mechanism, where the new LSP
   is set up before the old LSP is torn down.  This is done by using the
   mechanisms of the SESSION_ATTRIBUTE object and the Shared-Explicit
   (SE) reservation style (see [RFC3209]).  Both the new and old LSPs
   can share resources at common nodes.  The new LSP can be established
   without tearing down the old LSP in case of reversion (see section 12).

Section 12 should say:

   For "(full) LSP Rerouting", reversion implies that the old LSP is not 
   torn down by the head-end node after the new LSP is established. For
   reversion, the head-end node re-activates the old LSP after this has
   recovered.



Notes
-----
Current text in RFC 4872 describes reversion in the cases of 1+1 bidirectional Protection, 1:N Protection with Extra Traffic and Rerouting Without Extra Traffic, however it has no description of reversion with (Full) LSP Rerouting.
For (full) LSP Rerouting, the description in Section 11 instead implies that the old LSP is torn down. This has led to some confusion as to whether reversion with (full) LSP Rerouting is allowed or not allowed by the RFC. We believe this was not intentional. The additions would make it clear that reversion can be supported with (Full) LSP Rerouting.

Instructions:
-------------
This errata is currently posted as "Reported". If necessary, please
use "Reply All" to discuss whether it should be verified or
rejected. When a decision is reached, the verifying party (IESG)
can log in to change the status and edit the report, if necessary. 

--------------------------------------
RFC4872 (draft-ietf-ccamp-gmpls-recovery-e2e-signaling-04)
--------------------------------------
Title               : RSVP-TE Extensions in Support of End-to-End Generalized Multi-Protocol Label Switching (GMPLS) Recovery
Publication Date    : May 2007
Author(s)           : J.P. Lang, Ed., Y. Rekhter, Ed., D. Papadimitriou, Ed.
Category            : PROPOSED STANDARD
Source              : Common Control and Measurement Plane
Area                : Routing
Stream              : IETF
Verifying Party     : IESG

From lberger@labn.net  Tue Jul 31 10:23:15 2012
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From: Lou Berger <lberger@labn.net>
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Subject: [CCAMP] etherpad, jabber and remote participation for Vancouver
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All,
	We are planning to continue our use of etherpad for real time minute
taking during our meetings this week.  The pad is already available
http://tools.ietf.org/wg/ccamp/minutes and we've already loaded the
agenda.  Please feel free to contribute.

If you are planning to participate remotely we'd like to try having you
type your question into the pad rather than jabber.  Just add it right
before the next presentation (not mixed in with the minutes of the
ongoing discussion -- they'll get moved up once discussed.)

Also, if your are a presenter who is having someone else present your
slides and would like to try to skype in *during your presentation*,
please contact the chairs.

Much thanks,
Lou (and Deborah)

From rgandhi@cisco.com  Tue Jul 31 10:24:26 2012
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From: "Rakesh Gandhi (rgandhi)" <rgandhi@cisco.com>
To: "zhang.fei3@zte.com.cn" <zhang.fei3@zte.com.cn>
Thread-Topic: Comments on draft-ietf-ccamp-mpls-tp-rsvpte-ext-associated-lsp-03
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Date: Tue, 31 Jul 2012 17:24:22 +0000
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Subject: Re: [CCAMP] Comments on draft-ietf-ccamp-mpls-tp-rsvpte-ext-associated-lsp-03
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Hi Fei,

Thanks for your kind reply. Please see inline..<RG3>..

<Snipped email to focus on open items>


From: zhang.fei3@zte.com.cn [mailto:zhang.fei3@zte.com.cn]
Sent: Monday, July 30, 2012 10:04 PM
To: Rakesh Gandhi (rgandhi)
Cc: Eric Osborne (eosborne); jiang.weilian@zte.com.cn; jingrq@ctbri.com.cn;=
 Robert Sawaya (rsawaya); George Swallow (swallow); yang.fan5@zte.com.cn; C=
CAMP
Subject: RE: Comments on draft-ietf-ccamp-mpls-tp-rsvpte-ext-associated-lsp=
-03

Thank you Rakesh for sharing your idea, I think we are roughly in agreement=
 and need to hear more voices from the WG. :)

See inline <fei></fei>

Best

Fei

2) Define one flag for co-routed or non-corouted. If the co-routed bidir is=
 the default behavior, why not using the procedure defined in RFC3473? I am=
 afraid it is hard
to persuade the WG to do so. Maybe the better way is that non-corouted bidi=
r is the default, and the set of the co-routed flag only means that it is r=
ecommended, not mandatory, the checking whether the LSP is co-routed can be=
 done by comparing the RRO objects. What is your opinion?
<RG1> It is fine to have non co-routed as default. RFC 3473 is a GMPLS sign=
aling procedure. It may not be optimal  to have two different signaling pro=
cedures, one for non co-routed (ext associated object) and one for co-route=
d (RFC 3473) procedures. By adding a flag for co-routed, same signaling (ex=
t associated object) can be used for both which is nice. We believe compari=
ng of RRO can be misleading because two LSPs can be on the same path even t=
hough provisioned to be non co-routed.

<fei>
Sorry that what I suggested maybe mislead you, the following descripitons a=
re more accurate. :)
 1)The default behavior (non-corouted) means that it is not required to be =
co-routed. In other words, it is also OK that the two paths are along the s=
ame path

.
<RG3> Agree.

 2)The flag set means that co-routed is recommended. In other words, the re=
verse LSP SHOULD be established in the same path as much as possible. If th=
e flag set means
that co-routed is mandatory,the procedures will be very complex in double s=
ided provisioning model.
</fei>
<RG3> There are applications that require co-routed LSPs. So I think we sho=
uld have a flag to indicate that LSPs must be co-routed, else node will sen=
d a path error for example if request cannot be met.  I agree with you abou=
t complexity with double sided provisioning model though.


3)As to the tuple of <lower ip address, high ip address, association id>, y=
eah, it is one kind of implementation, but there are potential some other r=
ealizations, like using one of the router id plus the tunnel id. I think we=
 had better not restrict the execution to such a narrow scope. What about t=
he EA format listed below?

        0                   1                   2                   3
     0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    |            Length             | Class-Num(199)|  C-Type (TBA) |
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    |       Association Type        |       Association ID          |
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    |                    IPv4 Association Source                    |
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    |                   Global Association Source                   |
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
    |Extended Association Flags.    |Extended Association ID ...    |
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     |....(continue)                                                 :
    +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

<RG> Do you mean to have extended association ID as tunnel ID (16 bits) + I=
P address (32 bits) in this object?
Please see inline below..<RG1>..

<fei>
No. I want to say that this format of EA objects can accomodate more kinds =
of implementations. Like

1)Association ID: user provisioned idential value; Association Source: the =
lowe ip address; EA ID: the higher IP address. As you suggested

2)Association ID: tunnel ID or user provisioned value; Association Source:T=
unnel sender address or user provisioned; EA ID: be empty or LSP ID or any =
other information.

3)The potential other implementations...

IMHO, the EA ID can be IP address or any other values in the context of Ass=
ociation Source plus Association ID, which is backward compatible.

</fei>
<RG3> Ok, we probably should add use cases for various methods. I can see m=
ethod 1 being used for setting up bidirectional LSPs but I am not sure abou=
t method 2 for example. One worry is that different methods can lead to int=
erop issues if one vendor implements method 1 and second vendor method 2.
Association object is being used for different association types (RFC 4872:=
 type 1: Recovery), (RFC 4873- type 2: Resource sharing), etc. and these RF=
Cs define specific procedures for the given association type. So IMHO, it m=
ay be ok to define a stricter procedure for populating ext association obje=
ct for the new Bidirectional LSPs association type.

Thanks,
Rakesh






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<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ti=
mes New Roman&quot;,&quot;serif&quot;;color:#1F497D">Hi Fei,<o:p></o:p></sp=
an></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ti=
mes New Roman&quot;,&quot;serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ti=
mes New Roman&quot;,&quot;serif&quot;;color:#1F497D">Thanks for your kind r=
eply. Please see inline..&lt;RG3&gt;..<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ti=
mes New Roman&quot;,&quot;serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ti=
mes New Roman&quot;,&quot;serif&quot;;color:#1F497D">&lt;Snipped email to f=
ocus on open items&gt;<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ti=
mes New Roman&quot;,&quot;serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ti=
mes New Roman&quot;,&quot;serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:&quot=
;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span style=3D"font-s=
ize:10.0pt;font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;"> zhang.fe=
i3@zte.com.cn [mailto:zhang.fei3@zte.com.cn]
<br>
<b>Sent:</b> Monday, July 30, 2012 10:04 PM<br>
<b>To:</b> Rakesh Gandhi (rgandhi)<br>
<b>Cc:</b> Eric Osborne (eosborne); jiang.weilian@zte.com.cn; jingrq@ctbri.=
com.cn; Robert Sawaya (rsawaya); George Swallow (swallow); yang.fan5@zte.co=
m.cn; CCAMP<br>
<b>Subject:</b> RE: Comments on draft-ietf-ccamp-mpls-tp-rsvpte-ext-associa=
ted-lsp-03<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-bottom:12.0pt"><br>
<span style=3D"font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-se=
rif&quot;;color:green">Thank you Rakesh for sharing your idea, I think we a=
re roughly in agreement and need to hear more voices from the WG. :)</span>
<br>
<br>
<span style=3D"font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-se=
rif&quot;;color:#1F497D"><o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-bottom:12.0pt"><span style=3D"font-s=
ize:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:green=
">See inline &lt;fei&gt;&lt;/fei&gt;</span><br>
<br>
<span style=3D"font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-se=
rif&quot;;color:green">Best</span>
<br>
<br>
<span style=3D"font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-se=
rif&quot;;color:green">Fei</span>
<br>
<br>
<o:p></o:p></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,&quot;sans-serif&quot;">2) Define one flag for co-routed or non-c=
orouted. If the co-routed bidir is the default behavior, why not using the =
procedure defined in RFC3473? I am afraid it is hard</span><span style=3D"f=
ont-family:&quot;Arial&quot;,&quot;sans-serif&quot;">
</span><span style=3D"font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;=
sans-serif&quot;"><br>
to persuade the WG to do so. Maybe the better way is that non-corouted bidi=
r is the default, and the set of the co-routed flag only means that it is r=
ecommended, not mandatory, the checking whether the LSP is co-routed can be=
 done by comparing the RRO objects.
 What is your opinion?</span><span style=3D"font-family:&quot;Arial&quot;,&=
quot;sans-serif&quot;"> </span>
<br>
<span style=3D"font-size:10.0pt;font-family:&quot;Calibri&quot;,&quot;sans-=
serif&quot;;color:#C0504D">&lt;RG1&gt; It is fine to have non co-routed as =
default. RFC 3473 is a GMPLS signaling procedure. It may not be optimal &nb=
sp;to have two different signaling procedures, one for non co-routed
 (ext associated object) and one for co-routed (RFC 3473) procedures. By ad=
ding a flag for co-routed, same signaling (ext associated object) can be us=
ed for both which is nice. We believe comparing of RRO can be misleading be=
cause two LSPs can be on the same
 path even though provisioned to be non co-routed.</span> <br>
<br>
<span style=3D"font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-se=
rif&quot;;color:green">&lt;fei&gt;</span>
<br>
<span style=3D"font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-se=
rif&quot;;color:green">Sorry that what I suggested maybe mislead you, the f=
ollowing descripitons are more accurate. :)</span>
<br>
<span style=3D"font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-se=
rif&quot;;color:green">&nbsp;1)The default behavior (non-corouted) means th=
at it is not required to be co-routed. In other words, it is also OK that t=
he two paths are along the same path</span><span style=3D"font-size:10.0pt;=
font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ti=
mes New Roman&quot;,&quot;serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,&quot;sans-serif&quot;;color:green">.</span>
<span style=3D"color:#1F497D"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ti=
mes New Roman&quot;,&quot;serif&quot;;color:#1F497D">&lt;RG3&gt; Agree.<o:p=
></o:p></span></p>
<p class=3D"MsoNormal"><br>
<span style=3D"font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-se=
rif&quot;;color:green">&nbsp;2)The flag set means that co-routed is recomme=
nded. In other words, the reverse LSP SHOULD be established in the same pat=
h as much as possible. If the flag set means</span>
<br>
<span style=3D"font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-se=
rif&quot;;color:green">that co-routed is mandatory,the procedures will be v=
ery complex in double sided provisioning model.</span>
<br>
<span style=3D"font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-se=
rif&quot;;color:green">&lt;/fei&gt;</span>
<span style=3D"color:#1F497D"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ti=
mes New Roman&quot;,&quot;serif&quot;;color:#1F497D">&lt;RG3&gt; There are =
applications that require co-routed LSPs. So I think we should have a flag =
to indicate that LSPs must be co-routed, else node will send a
 path error for example if request cannot be met. &nbsp;I agree with you ab=
out complexity with double sided provisioning model though.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><br>
<span style=3D"font-family:&quot;Arial&quot;,&quot;sans-serif&quot;"><br>
</span><span style=3D"font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;=
sans-serif&quot;">3)As to the tuple of &lt;lower ip address, high ip addres=
s, association id&gt;, yeah, it is one kind of implementation, but there ar=
e potential some other realizations, like using one of the router
 id plus the tunnel id. I think we had better not restrict the execution to=
 such a narrow scope. What about the EA format listed below?</span><span st=
yle=3D"font-family:&quot;Arial&quot;,&quot;sans-serif&quot;">
<br>
</span><span style=3D"font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;=
sans-serif&quot;"><br>
&nbsp;</span><span style=3D"font-family:&quot;Arial&quot;,&quot;sans-serif&=
quot;"> &nbsp; &nbsp; &nbsp; 0 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &n=
bsp; &nbsp; &nbsp; 1 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp=
; &nbsp; 2 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 3=
<br>
&nbsp; &nbsp; &nbsp;0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7=
 8 9 0 1<br>
&nbsp; &nbsp; &#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&=
#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43=
;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;<br>
&nbsp; &nbsp; | &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Length &nbsp; &nbs=
p; &nbsp; &nbsp; &nbsp; &nbsp; | Class-Num(199)| &nbsp;C-Type (TBA) |<br>
&nbsp; &nbsp; &#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&=
#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43=
;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;<br>
&nbsp; &nbsp; | &nbsp; &nbsp; &nbsp; Association Type &nbsp; &nbsp; &nbsp; =
&nbsp;| &nbsp; &nbsp; &nbsp; Association ID &nbsp; &nbsp; &nbsp; &nbsp; &nb=
sp;|<br>
&nbsp; &nbsp; &#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&=
#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43=
;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;<br>
&nbsp; &nbsp; | &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nb=
sp; &nbsp;IPv4 Association Source &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;=
 &nbsp; &nbsp; &nbsp; &nbsp;|<br>
&nbsp; &nbsp; &#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&=
#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43=
;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;<br>
&nbsp; &nbsp; | &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nb=
sp; Global Association Source &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nb=
sp; &nbsp; &nbsp; |<br>
&nbsp; &nbsp; &#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&=
#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43=
;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;<br>
&nbsp; &nbsp; |Extended Association Flags. &nbsp; &nbsp;|Extended Associati=
on ID ... &nbsp; &nbsp;| <br>
&nbsp; &nbsp; &nbsp;&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&=
#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43=
;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43; <br>
&nbsp; &nbsp; &nbsp;|....(continue) &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbs=
p; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &n=
bsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; :<br>
&nbsp; &nbsp; &#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&=
#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43=
;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;-&#43;<br>
</span><br>
<span style=3D"font-size:10.0pt;font-family:&quot;Calibri&quot;,&quot;sans-=
serif&quot;;color:#C0504D">&lt;RG&gt; Do you mean to have extended associat=
ion ID as tunnel ID (16 bits) &#43; IP address (32 bits) in this object?</s=
pan>
<br>
<span style=3D"font-size:10.0pt;font-family:&quot;Calibri&quot;,&quot;sans-=
serif&quot;;color:#C0504D">Please see inline below..&lt;RG1&gt;..</span>
<br>
<br>
<span style=3D"font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-se=
rif&quot;;color:green">&lt;fei&gt;</span>
<br>
<span style=3D"font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-se=
rif&quot;;color:green">No. I want to say that this format of EA objects can=
 accomodate more kinds of implementations. Like</span>
<br>
<br>
<span style=3D"font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-se=
rif&quot;;color:green">1)Association ID: user provisioned idential value; A=
ssociation Source: the lowe ip address; EA ID: the higher IP address. As yo=
u suggested</span>
<br>
<br>
<span style=3D"font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-se=
rif&quot;;color:green">2)Association ID: tunnel ID or user provisioned valu=
e; Association Source:Tunnel sender address or user provisioned; EA ID: be =
empty or LSP ID or any other information.</span>
<br>
<br>
<span style=3D"font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-se=
rif&quot;;color:green">3)The potential other implementations...</span>
<br>
<br>
<span style=3D"font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-se=
rif&quot;;color:green">IMHO, the EA ID can be IP address or any other value=
s in the context of Association Source plus Association ID, which is backwa=
rd compatible.</span>
<br>
<br>
<span style=3D"color:#1F497D"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ar=
ial&quot;,&quot;sans-serif&quot;;color:#1F497D">&lt;</span><span style=3D"f=
ont-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-serif&quot;;color:=
green">/fei&gt;</span>
<br>
<span style=3D"color:#1F497D">&lt;RG3&gt; Ok, we probably should add use ca=
ses for various methods. I can see method 1 being used for setting up bidir=
ectional LSPs but I am not sure about method 2 for example. One worry is th=
at different methods can lead to interop
 issues if one vendor implements method 1 and second vendor method 2.<o:p><=
/o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Association object is =
being used for different association types (RFC 4872: type 1: Recovery), (R=
FC 4873- type 2: Resource sharing), etc. and these RFCs define specific pro=
cedures for the given association type.
 So IMHO, it may be ok to define a stricter procedure for populating ext as=
sociation object for the new Bidirectional LSPs association type.<o:p></o:p=
></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Thanks,<o:p></o:p></sp=
an></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Rakesh</span><br>
<span style=3D"font-size:10.0pt;font-family:&quot;Arial&quot;,&quot;sans-se=
rif&quot;"><br>
<br>
</span><o:p></o:p></p>
<p><br>
<br>
<br>
<o:p></o:p></p>
</div>
</body>
</html>

--_000_B7D2A316AA32B6469D9670B6A81B7C2404914Exmbalnx07ciscocom_--

From adrian@olddog.co.uk  Tue Jul 31 18:28:30 2012
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Cc: dimitri.papadimitriou@alcatel-lucent.be, jplang@ieee.org, dbrungard@att.com
Subject: Re: [CCAMP] [Technical Errata Reported] RFC4872 (3304)
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Hi CCAMP,

I find that this erratum is raised against two sections one of which I supplied
text for. If this get contentious, I will call on Stewart to call consensus and
handle the Erratum in the system.

In my opinion, this proposal goes further than the intention of the authors/WG
in publishing 4872.

With regard to the proposed addition to section 11...
The use of mb4b is already in scope. The existing text says "The new LSP
resources can be established using the make-before-break mechanism," so there is
no need to re-state "The new LSP can be established without tearing down the old
LSP".

I think your concern here is whether the old LSP is ever torn down. I think that
you are worried that if the old LSP is torn down, it might be impossible to
perform reversion because, after repair, an attempt to revert (also using mb4b)
might find that key resources have been "stolen" by some other LSP. I don't see
this as at all different from the issue of the protection LSP itself. That is,
it is of the nature of LSP Rerouting as a protection mechanism that:
a. protection may fail because of lack of resources
b. reversion may fail because of lack of resources

*If* reversion is so important, I don't quite see why protection is not
important. If protection is important then you should be using a proper
protection mechanism and not waiting for post facto rerouting. Furthermore, if
you require that the LSP be retained for restoration, why are you not using a
protection mechanism? 

But the general paradigm here is that you are willing to use the best available
LSP when it is set up in the first place, the best available LSP when you
re-route after failure, and the best available LSP when you "revert".

Lastly, it *does* remain an _option_ to retain the failed LSP in order to switch
back. Nothing in the old text precludes that, although I understand that there
is an implication that it might be expected to be torn down.

So I conclude that the proposed addition to section 12 is not what the
authors/WG intended.

We should discuss further.

Adrian

> -----Original Message-----
> From: RFC Errata System [mailto:rfc-editor@rfc-editor.org]
> Sent: 31 July 2012 17:39
> To: jplang@ieee.org; yakov@juniper.net; dimitri.papadimitriou@alcatel-
> lucent.be; stbryant@cisco.com; adrian@olddog.co.uk; lberger@labn.net;
> dbrungard@att.com
> Cc: lyong@ciena.com; ccamp@ietf.org; rfc-editor@rfc-editor.org
> Subject: [Technical Errata Reported] RFC4872 (3304)
> 
> 
> The following errata report has been submitted for RFC4872,
> "RSVP-TE Extensions in Support of End-to-End Generalized Multi-Protocol Label
> Switching (GMPLS) Recovery".
> 
> --------------------------------------
> You may review the report below and at:
> http://www.rfc-editor.org/errata_search.php?rfc=4872&eid=3304
> 
> --------------------------------------
> Type: Technical
> Reported by: Lyndon Ong <lyong@ciena.com>
> 
> Section: 11 & 12
> 
> Original Text
> -------------
> Section 11 says:
> 
> 
>    (Full) LSP rerouting will be initiated by the head-end node that has
>    either detected the LSP failure or received a Notify message and/or a
>    PathErr message with the new error code/sub-code "Notify Error/LSP
>    Locally Failed" for this LSP.  The new LSP resources can be
>    established using the make-before-break mechanism, where the new LSP
>    is set up before the old LSP is torn down.  This is done by using the
>    mechanisms of the SESSION_ATTRIBUTE object and the Shared-Explicit
>    (SE) reservation style (see [RFC3209]).  Both the new and old LSPs
>    can share resources at common nodes.
> 
> Section 12 says:
> 
>    [No text on reversion for (full) LSP Rerouting.]
> 
> Corrected Text
> --------------
> Section 11 should say:
> 
> 
>    (Full) LSP rerouting will be initiated by the head-end node that has
>    either detected the LSP failure or received a Notify message and/or a
>    PathErr message with the new error code/sub-code "Notify Error/LSP
>    Locally Failed" for this LSP.  The new LSP resources can be
>    established using the make-before-break mechanism, where the new LSP
>    is set up before the old LSP is torn down.  This is done by using the
>    mechanisms of the SESSION_ATTRIBUTE object and the Shared-Explicit
>    (SE) reservation style (see [RFC3209]).  Both the new and old LSPs
>    can share resources at common nodes.  The new LSP can be established
>    without tearing down the old LSP in case of reversion (see section 12).
> 
> Section 12 should say:
> 
>    For "(full) LSP Rerouting", reversion implies that the old LSP is not
>    torn down by the head-end node after the new LSP is established. For
>    reversion, the head-end node re-activates the old LSP after this has
>    recovered.
> 
> 
> 
> Notes
> -----
> Current text in RFC 4872 describes reversion in the cases of 1+1 bidirectional
> Protection, 1:N Protection with Extra Traffic and Rerouting Without Extra
Traffic,
> however it has no description of reversion with (Full) LSP Rerouting.
> For (full) LSP Rerouting, the description in Section 11 instead implies that
the old
> LSP is torn down. This has led to some confusion as to whether reversion with
> (full) LSP Rerouting is allowed or not allowed by the RFC. We believe this was
not
> intentional. The additions would make it clear that reversion can be supported
> with (Full) LSP Rerouting.
> 
> Instructions:
> -------------
> This errata is currently posted as "Reported". If necessary, please
> use "Reply All" to discuss whether it should be verified or
> rejected. When a decision is reached, the verifying party (IESG)
> can log in to change the status and edit the report, if necessary.
> 
> --------------------------------------
> RFC4872 (draft-ietf-ccamp-gmpls-recovery-e2e-signaling-04)
> --------------------------------------
> Title               : RSVP-TE Extensions in Support of End-to-End Generalized
Multi-
> Protocol Label Switching (GMPLS) Recovery
> Publication Date    : May 2007
> Author(s)           : J.P. Lang, Ed., Y. Rekhter, Ed., D. Papadimitriou, Ed.
> Category            : PROPOSED STANDARD
> Source              : Common Control and Measurement Plane
> Area                : Routing
> Stream              : IETF
> Verifying Party     : IESG

