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From: Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>
To: "Carey, Timothy (Timothy)" <timothy.carey@alcatel-lucent.com>
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Yes, I think this is what I wrote.

/js

On Sat, May 31, 2014 at 07:10:19PM +0000, Carey, Timothy (Timothy) wrote:
> Juergen,
> 
> Wouldn't the selected interface for the UDP test instance be part of the options for the task. The options have the "parameters" for the test which is specific for each test, right?
> 
> As for a MA telling the controller its capabilities - wouldn't it be part of the ma-interface-obj?
> 
> BR,
> Tim
> 
> -----Original Message-----
> From: Juergen Schoenwaelder [mailto:j.schoenwaelder@jacobs-university.de] 
> Sent: Friday, May 30, 2014 5:56 PM
> To: STARK, BARBARA H
> Cc: ippm@ietf.org; lmap@ietf.org
> Subject: Re: [lmap] UDP Echo example
> 
> On Fri, May 30, 2014 at 05:20:05PM +0000, STARK, BARBARA H wrote:
> > 
> > If we look at the TR-069 data model in [TR-143], we see that MA1's UDP Echo server functionality has input parameters of (1) a port to listen on and (2) a source IP address (MA1 will only respond to UDP packets from this source IP address). In an LMAP world, I think these would be the information-model ma-task-options<0..*>. There is also an input of the network interface to listen on. [I see that while information-model lets the MA tell the Controller what its interfaces are, there's no current linkage to allow an interface to be specified for a ma-task-obj. I think this is probably just an oversight and needs to be added.] 
> 
> The interface is just another task option.
> 
> /js
> 
> -- 
> Juergen Schoenwaelder           Jacobs University Bremen gGmbH
> Phone: +49 421 200 3587         Campus Ring 1, 28759 Bremen, Germany
> Fax:   +49 421 200 3103         <http://www.jacobs-university.de/>
> 
> 

-- 
Juergen Schoenwaelder           Jacobs University Bremen gGmbH
Phone: +49 421 200 3587         Campus Ring 1, 28759 Bremen, Germany
Fax:   +49 421 200 3103         <http://www.jacobs-university.de/>


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Juergen,

I am just trying to discuss what I felt is unclear in the definitions.
Let me give a practical example from a project i'm doing.
We have MA1 sending UDP traffic to MA2. MA2 will receive UDP packet and compute jitter. 
This is clearly an active measurement task for MA1.
What is unclear for me is how to define MA2 tasks.
Is it just one active task consisting in receiving packets from MA1 and computing 
jitter, or two tasks:

- One active task consisting in receiving the active traffic generated by MA1, 
- One passive task consisting in measuring jitter for the udp flow. It is passive 
according to the definition since MA2 does not generate the observed flow. 


BR,
Marc.


On Thu, 29 May 2014 15:36:28 +0200, Juergen Schoenwaelder wrote
> On Thu, May 29, 2014 at 04:24:01PM +0300, marc. ibrahim wrote:
> > According to the current Passive Measurement Method definition, an MA observing an 
> > active traffic measurement sent to it is performing a passive task. But in the same 
time 
> > it is an active task according the active definition.
> > 
> > As I said in my previous mail, the definitions should not be relative to a single 
MA.
> >
> 
> I believe, for LMAP the definitions are good enough. In particular for
> a passive/active measurement _task_ since tasks are executed by MAs.
> It seems you want to separate out passive/active measurement _method_,
> right? So what is the concrete proposal?
> 
> /js
> 
> -- 
> Juergen Schoenwaelder           Jacobs University Bremen gGmbH
> Phone: +49 421 200 3587         Campus Ring 1, 28759 Bremen, Germany
> Fax:   +49 421 200 3103         <http://www.jacobs-university.de/>
> 
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On Thu, 29 May 2014 16:43:54 +0000, KEN KO wrote
> I have always viewed Measurement Method/Task as independent from the viewpoint 
> of a specific MA - holistic, if you will. I would support any necessary 
> terminology that clarifies that definition.
> 
> Even if we all accept the above interpretation, I don't think we need new 
> terms in lmap. The 'initiating' MA's operational role should be fully defined 
> by the configuration and scheduling of a Measurement Task. Any other MAs roles 
> are communicated to them by the initiating MA, either in the form of messages 
> (eg, http GET) or something more specific to the Measurement Method - again, 
> fully defined via the configuration of the Task. Do we really need something new?

I agree with this view. I tend to say that the task transcends individual MA.

In a simple A-B ping example, it is a single task initiated by A that is executing an 
active task that has been instructed by the controller, while B is just "participating" 
in the task. I don't see that we can we talk about a task being executed by B. Is 
replying to a ping a full task that can be instructed and scheduled by the controller? I 
don't see that. 

BR,

Marc.
> 
> > -----Original Message-----
> > From: ippm [mailto:ippm-bounces@ietf.org] On Behalf Of STARK, BARBARA
> > H
> > Sent: Thursday, May 29, 2014 12:14 PM
> > To: marc.ibrahim; Nalini Elkins; Juergen Schoenwaelder; Vero Zheng
> > Cc: ippm@ietf.org; lmap@ietf.org
> > Subject: Re: [ippm] [lmap] I-D Action: draft-ietf-lmap-framework-05.txt
> > 
> > > I think the confusion comes from whether or not to consider individual MA.
> > > For a single MA, measuring existing traffic is passive relatively to
> > > this given MA.
> > > But if this traffic was sent from another MA, then the whole method is
> > > active since somebody has injected traffic.
> > >
> > > I think the definitions of active and passive methods are not relative
> > > to an MA but to all MAs/MPs involved each measurement. If this is the
> > > case, "Receiving" is not really different from "generating" since an
> > > MA will receive and measure what has been generated.
> > 
> > I'm not sure if it's confusion so much as it is the term ippm needs vs. the term
> > lmap needs. Lmap looks at the world from the perspective of the MA, and
> > from the perspective of the operation systems. Ippm looks at the world from
> > the perspective of metrics (and what needs to happen to generate the
> > metrics).
> > 
> > Lmap needs terms that describe (generally and as a specific instantiation of
> > the general term) what an MA does to accomplish its role in the term that
> > ippm needs.
> > It sounds like Ippm needs a term to describe holistically what is involved in
> > generation of a particular metric.
> > 
> > Using the same term (Measurement Method or its Measurement Task
> > instantiation) as both the MA functional role and as the holistic metric
> > generation method (task) is problematic. These need to be distinct terms.
> > 
> > In the context of the ippm registry, we really need registry entries to provide
> > specifics for configuring each MA role that is part of the holistic system
> > needed for the metric.
> > 
> > So if Measurement Method / Task describe the holistic technique, then lmap
> > needs new terms. If Measurement Method / Task describe an MA's specific
> > role, then ippm needs new terms for the holistic technique (and holistic
> > instantiations of that technique).
> > Barbara
> > 
> > 
> > _______________________________________________
> > ippm mailing list
> > ippm@ietf.org
> > https://www.ietf.org/mailman/listinfo/ippm
> 
> _______________________________________________
> lmap mailing list
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From: "MORTON, ALFRED C (AL)" <acmorton@att.com>
To: KEN KO <KEN.KO@adtran.com>, "STARK, BARBARA H" <bs7652@att.com>, marc.ibrahim <marc.ibrahim@usj.edu.lb>, Nalini Elkins <nalini.elkins@insidethestack.com>, Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>, Vero Zheng <vero.zheng@huawei.com>, "trevor.burbridge@bt.com" <trevor.burbridge@bt.com>, "philip.eardley@bt.com" <philip.eardley@bt.com>
Date: Thu, 29 May 2014 18:06:25 -0400
Thread-Topic: [ippm] [lmap] I-D Action: draft-ietf-lmap-framework-05.txt
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Subject: Re: [ippm] [lmap] I-D Action: draft-ietf-lmap-framework-05.txt
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Long thread today...

I think it ended-up in a productive place, a logical examination
of a realistic scenario and whether the framework and (more importantly)
the Information Model have the flexibility to instantiate it=20
( A - C - B hosts observing  or performing ICMP echo req/replies).
It's a similar concept to one we examined in IPPM and wrote about:=20
http://tools.ietf.org/html/rfc5644

The key factor in determining the type of measurement in this RFC was the
a priori knowledge of the packet (or stream) from the source.
Packet loss could be measured at  mid-point  "C"(and subsequent points)
because the measurement system knew when packets were sent from "A"
could distinguish between different packets of the same stream, and knew=20
how long to wait for them.=20

Once we are satisfied that the Information Model allows the needed flexibil=
ity
for control, it would be good to take another step: The Information Model
depends on the Performance Metrics Registry, which we have split into
active and passive sub-registries. If the observations you want to make at
mid-point "C" can be supported with a metric from the passive registry,
that's input to the measurement categorization. If not, try the active regi=
stry.
If the active and/or passive registries support some important scenarios,=20
then we've come a long way.

regards,
Al


________________________________________
From: ippm [ippm-bounces@ietf.org] On Behalf Of KEN KO [KEN.KO@adtran.com]
Sent: Thursday, May 29, 2014 2:15 PM
To: STARK, BARBARA H; marc.ibrahim; Nalini Elkins; Juergen Schoenwaelder; V=
ero Zheng; trevor.burbridge@bt.com; philip.eardley@bt.com
Cc: ippm@ietf.org; lmap@ietf.org
Subject: Re: [ippm] [lmap] I-D Action: draft-ietf-lmap-framework-05.txt

Barbara,

I agree with most of what you are saying.

Measurement Methods can be complex and can create different roles for diffe=
rent MAs, and it is very possible for each MA to be configured only with it=
s own role. There may be Methods for which MA A could participate with MAs =
B and C without a priori knowledge of their roles, and get completely diffe=
rent yet equally proper responses from each of them. I hadn't considered th=
is and it contradicts my earlier comment (which I rescind) about the initia=
ting MA having all information relevant to a Task.

Having said all that, I still don't see the need for a new term beyond the =
language we have already used - that is, each MA's role in executing a Task=
.

While we're at it, we might want to consider the above scenario with regard=
 to the draft Information Model. Can we currently configure a Task as being=
 triggered by something other than a Schedule - in response to an external =
stimulus like a message from a remote MA? I think we can:
- One or more ma-task-options objects within ma-task-obj specifies the non-=
Schedule conditions under which the Task is initiated. Unless Schedule-base=
d initiation is also desired, the Measurement Task Configuration would not =
be referenced in a local Schedule.

However, I don't see this addressed explicitly in either the framework or t=
he information model, and if this behavior is in scope I think it needs lan=
guage for clarity.

The other area you touch on (unilateral exceptions where, for instance, a M=
A does not respond to MAs outside a configured address range) seems equally=
 valid, and I'm more open to a new term  to describe it. Does "exceptions" =
fit the bill?

Ken

> -----Original Message-----
> From: STARK, BARBARA H [mailto:bs7652@att.com]
> Sent: Thursday, May 29, 2014 1:20 PM
> To: marc.ibrahim; KEN KO; Nalini Elkins; Juergen Schoenwaelder; Vero Zhen=
g
> Cc: lmap@ietf.org; ippm@ietf.org
> Subject: RE: [lmap] [ippm] I-D Action: draft-ietf-lmap-framework-05.txt
>
> > In a simple A-B ping example, it is a single task initiated by A that
> > is executing an active task that has been instructed by the
> > controller, while B is just "participating"
> > in the task. I don't see that we can we talk about a task being execute=
d by
> B.
> > Is replying to a ping a full task that can be instructed and scheduled
> > by the controller? I don't see that.
>
> I think it would be possible to schedule B to only respond to pings at ce=
rtain
> times of day. Responding to ping is something that can be enabled/disable=
d.
> In which case it can be enabled and disabled according to a schedule. The
> enabling/disabling of B's ability to respond to pings can be completely a=
nd
> totally distinct from any schedules that involve B initiating ping -- the=
y are 2
> distinct roles. Configuration of these roles is also distinct (responding=
 may not
> require any configuration other than the schedule, or it could be configu=
red
> to only respond to pings from certain IP addresses). It may even be that =
an
> MA only has the ability to initiate ping and never respond, or vice versa=
.
>
> I very much believe that from the MA perspective (lmap), it is critical t=
hat we
> be able to talk about the MA's role in a holistic technique. I also belie=
ve that
> the MA can have a passive role (does not generate measurement traffic) or
> an active role (generates measurement traffic) independent of how ippm
> may choose to characterize the holistic technique.
> Barbara

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


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Thread-Topic: [ippm] [lmap]  I-D Action: draft-ietf-lmap-framework-05.txt
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From: Mach Chen <mach.chen@huawei.com>
To: Greg Mirsky <gregimirsky@gmail.com>, "STARK, BARBARA H" <bs7652@att.com>
Thread-Topic: [ippm] [lmap] I-D Action: draft-ietf-lmap-framework-05.txt
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Subject: Re: [ippm] [lmap] I-D Action: draft-ietf-lmap-framework-05.txt
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From: "Romascanu, Dan (Dan)" <dromasca@avaya.com>
To: "STARK, BARBARA H" <bs7652@att.com>, KEN KO <KEN.KO@adtran.com>, marc.ibrahim <marc.ibrahim@usj.edu.lb>, Nalini Elkins <nalini.elkins@insidethestack.com>, Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>, Vero Zheng <vero.zheng@huawei.com>, "trevor.burbridge@bt.com" <trevor.burbridge@bt.com>, "philip.eardley@bt.com" <philip.eardley@bt.com>
Thread-Topic: [lmap] [ippm]     I-D Action: draft-ietf-lmap-framework-05.txt
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> -----Original Message-----
> From: lmap [mailto:lmap-bounces@ietf.org] On Behalf Of STARK, BARBARA H
> Sent: Friday, May 30, 2014 12:26 AM
> To: KEN KO; marc.ibrahim; Nalini Elkins; Juergen Schoenwaelder; Vero Zhen=
g;
> trevor.burbridge@bt.com; philip.eardley@bt.com
> Cc: ippm@ietf.org; lmap@ietf.org
> Subject: Re: [lmap] [ippm] I-D Action: draft-ietf-lmap-framework-05.txt
>=20
> > Measurement Methods can be complex and can create different roles for
> > different MAs, and it is very possible for each MA to be configured
> > only with its own role. There may be Methods for which MA A could
> > participate with MAs B and C without a priori knowledge of their
> > roles, and get completely different yet equally proper responses from
> > each of them. I hadn't considered this and it contradicts my earlier
> > comment (which I rescind) about the initiating MA having all informatio=
n
> relevant to a Task.
> >
> > Having said all that, I still don't see the need for a new term beyond
> > the language we have already used - that is, each MA's role in executin=
g a
> Task.
>=20
> I'm becoming ever more strongly convinced that either ippm or lmap needs =
a
> new term -- I don't care which. But my reading of framework and the
> information model is that what lmap is calling a Measurement Method and
> Measurement Task is related to the specific role the MA plays in the holi=
stic
> technique. The MA absolutely does not need to know what other roles do or
> how they are configured. It doesn't care what they do. It only knows what=
 it
> has to do. I think this is also important to understand in the design of =
the
> registry -- if there is some metric in the registry that requires proper
> configuration of multiple roles, the registry needs to be able to express=
 what
> the proper configuration is for each distinct role. As a compromise (sinc=
e
> many seem to want Measurement Method to be the holistic technique)
> maybe we should use Measurement Method for the holistic technique (and
> ippm can define that, because it's not really central to lmap), Measureme=
nt
> Method Role for the role of the Meas  urement Method that is implemented
> on a MA, and Measurement Task is an instantiation of a Measurement
> Method Role (which means a Task is *not* an instantiation of the
> Measurement Method -- which assumes ippm doesn't need a term for an
> instantiation of the holistic technique). Then lmap can have a Measuremen=
t
> Method Active Role that generates measurement traffic and may measure
> parameters, and a Measurement Method Passive Role that does not
> generate traffic and measures parameters. Ippm can define if there're suc=
h
> things as Active or Passive Measurement Methods. In lmap, we really only
> need to care about whether the role is active or passive, and not how the
> holistic technique is characterized.
>=20

Hi Barbara.

Doesn't become too complicated? What is the difference between the Measurem=
ent Method Role and Measurement Task and why do we need the two distinct te=
rms? Maybe it would help if you can provide a definition of Measurement Met=
hod Role because I frankly cannot compile ' Measurement Task is an instanti=
ation of a Measurement Method Role', in other words why do we need a generi=
c term and an instantiation?=20

Thanks and Regards,

Dan
(speaking as contributor)


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From: =?utf-8?B?6YKT54G16I6JL0xpbmdsaSBEZW5n?= <denglingli@chinamobile.com>
To: "'MORTON, ALFRED C \(AL\)'" <acmorton@att.com>, "'KEN KO'" <KEN.KO@adtran.com>, "'STARK, BARBARA H'" <bs7652@att.com>, "'marc.ibrahim'" <marc.ibrahim@usj.edu.lb>, "'Nalini Elkins'" <nalini.elkins@insidethestack.com>, "'Juergen Schoenwaelder'" <j.schoenwaelder@jacobs-university.de>, "'Vero Zheng'" <vero.zheng@huawei.com>, <trevor.burbridge@bt.com>, <philip.eardley@bt.com>
References: <CA+RyBmV-QbPwQAFinYvNKGJR-Jnp_roG=wAs7yAuhcObtSRuMA@mail.gmail.com> <A2E337CDB7BC4145B018B9BEE8EB3E0D40F406DE56@EMV67-UKRD.domain1.systemhost.net> <2EEA459CD95CCB4988BFAFC0F2287B5C5C8441BF@SZXEMA504-MBS.china.huawei.com> <20140529121607.GA82518@elstar.local> <1401366760.51380.YahooMailNeo@web125104.mail.ne1.yahoo.com> <2D09D61DDFA73D4C884805CC7865E6113043D70E@GAALPA1MSGUSR9L.ITServices.sbc.com> <1401367762.8149.YahooMailNeo@web125105.mail.ne1.yahoo.com> <2D09D61DDFA73D4C884805CC7865E6113043D765@GAALPA1MSGUSR9L.ITServices.sbc.com> <20140529130345.M94452@mail.usj.edu.lb> <2D09D61DDFA73D4C884805CC7865E6113043D987@GAALPA1MSGUSR9L.ITServices.sbc.com> <D14B7E40AEBFD54EA3AD964902DD7CB77756AD0C@ex-mb1.corp.adtran.com> <20140529164842.M20408@usj.edu.lb> <2D09D61DDFA73D4C884805CC7865E6113043DA2B@GAALPA1MSGUSR9L.ITServices.sbc.com>,  <D14B7E40AEBFD54EA3AD964902DD7CB77756AD3C@ex-mb1.corp.adtran.com> <2845723087023D4CB5114223779FA9C80178E0CD93@njfpsrvexg8.research.att.com>
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Hi Al,

I agree with you on all your points, except the use of the word =
"observation" for passive measurement.
More inline.

> The key factor in determining the type of measurement in this RFC was =
the
> a priori knowledge of the packet (or stream) from the source.
[=E9=82=93=E7=81=B5=E8=8E=89/Lingli Deng] Support. From the perspective =
of an MP performing a passive task, it has to do the measurement without =
any reliance on the prior knowledge from the source about the targeted =
traffic (when to expect it, how long and how large it would be, etc.). =
While in contrast, there is an active traffic generator in any active =
measurement task acting as the source, to ensure the participating MPs =
measures metrics for targeted traffic with known characteristics.=20

> Packet loss could be measured at  mid-point  "C"(and subsequent =
points)
> because the measurement system knew when packets were sent from "A"
> could distinguish between different packets of the same stream, and =
knew
> how long to wait for them.
[=E9=82=93=E7=81=B5=E8=8E=89/Lingli Deng] There are also passive =
measurement methods, which can measure packet loss at mid-point by doing =
a little more than pure observation.
Examples include =
http://tools.ietf.org/html/draft-elkins-ippm-pdm-metrics-04 and =
http://tools.ietf.org/html/draft-chen-ippm-coloring-based-ipfpm-framework=
-01 (where the IP header is being marked/appended by an upstream MP to =
coordinate with the downstream MP for measurement on existing traffic =
and no traffic is injected for the purpose of measurement therefore no =
prior knowledge other than the appended/markded information piggybacked =
to the targeted traffic can be assumed for any participating MP).
>=20
> Once we are satisfied that the Information Model allows the needed =
flexibility
> for control, it would be good to take another step: The Information =
Model
> depends on the Performance Metrics Registry, which we have split into
> active and passive sub-registries. If the observations you want to =
make at
> mid-point "C" can be supported with a metric from the passive =
registry,
> that's input to the measurement categorization. If not, try the active =
registry.
> If the active and/or passive registries support some important =
scenarios,
> then we've come a long way.
[=E9=82=93=E7=81=B5=E8=8E=89/Lingli Deng] I would like it more if the =
word "observation" is replaced by "measurement".
It gives two implications which I think Vero and Nalini wanted to avoid =
by raising the discussion in the first place.
1, It gives one the impression that a passive measurement task is always =
performed by an individual MP and does not need any coordination from =
outside.=20
2, An MP doing passive measurement is not supposed to "touch" the =
traffic, but only "observes" them, in which case packet loss can hardly =
be measured.
>

Given the fact that "passive measurement" has a lot of possibilities =
more than pure observation, I echo Vero and Nalini that one should cease =
using "observation" as an synonym for passive measurement.

Lingli





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From: "STARK, BARBARA H" <bs7652@att.com>
To: "Romascanu, Dan (Dan)" <dromasca@avaya.com>, KEN KO <KEN.KO@adtran.com>, "marc.ibrahim" <marc.ibrahim@usj.edu.lb>, Nalini Elkins <nalini.elkins@insidethestack.com>, Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>, Vero Zheng <vero.zheng@huawei.com>, "trevor.burbridge@bt.com" <trevor.burbridge@bt.com>, "philip.eardley@bt.com" <philip.eardley@bt.com>
Thread-Topic: [lmap] [ippm]     I-D Action: draft-ietf-lmap-framework-05.txt
Thread-Index: AQHPe19g7JlyMC2zj0SiwX4AAU19WZtXynkggABV6gD//99KoIABAGmAgAALQRA=
Date: Fri, 30 May 2014 14:14:38 +0000
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> Doesn't become too complicated? What is the difference between the
> Measurement Method Role and Measurement Task and why do we need
> the two distinct terms? Maybe it would help if you can provide a definiti=
on of
> Measurement Method Role because I frankly cannot compile ' Measurement
> Task is an instantiation of a Measurement Method Role', in other words wh=
y
> do we need a generic term and an instantiation?

The information model says:
   The Measurement Task Configuration will include ...  a registry
   entry [I-D....-ippm-...] that defines the Measurement
   Task.  The MA itself will resolve the registry entry to a local
   executable program.  In addition the Measurement Task is specialised
   through a set of configuration Options.  The nature and number of
   these Options will depend upon the Measurement Task and will be
   defined in the Measurement Task Registry.

So the information-model makes the Measurement Task an instantiation of a l=
ocal executable program. But how does the Controller learn about what regis=
try entries the MA is capable of resolving to local executable programs? Th=
at is, how does the Controller know what local executable programs exist on=
 the MA? I had thought this would be part of the capabilities that get repo=
rted to the Controller by the MA. Bu the ma-capability object has some dist=
inct other undefined measurement-id urn and doesn't provide the Controller =
with any list of registry entries that the MA is capable of resolving. Hope=
fully, this is just something that needs to be fixed in the information-mod=
el, and not an intentional lack of relationship between ma-capability and m=
a-task (or ma-task-registry).=20

Anyway, information-model says (wrt capability reporting) that "Capabilitie=
s include ... the set of Measurement Tasks that are actually installed or a=
vailable on the MA." This, to me, is a problematic statement. Now, not only=
 is the term Measurement Task being used to describe an instantiation of a =
local executable program with a specific set of values for input parameters=
 (ma-task-options<0..*>) and perhaps a particular cycle id (ma-task-cycle-i=
d) with a pointer to the local executable program (ma-task-registry), the t=
erm is also being used as synonymous with the local executable program.=20

I do not think that "Measurement Task" should be used as another name for t=
he local executable program. I would like to see this fixed. It would also =
appear that the ma-capability object is supposed to be the object that prov=
ides the information regarding these local executable programs that are ins=
talled/available on the MA. But the word "capabilities" is also said to inc=
lude interface details. So "local executable programs" is a subset of "capa=
bilities" (which means "capabilities" is also not an appropriate word to us=
e to just mean "local executable programs").=20

So do these "local executable programs" need a better name, so we aren't te=
mpted to call them "Measurement Task"? Or maybe we can just call them "Loca=
l Executable Programs" and define them as functionality in a MA that allows=
 the MA to perform a specific role of a Measurement Method. And Measurement=
 Task is an instantiation of a Local Executable Program. Because Measuremen=
t Task is definitely not an instantiation of the holistic Measurement Metho=
d. The ping initiator Local Executable Program can be completely distinct f=
rom the ping responder Local Executable Program. And it often is.
Barbara


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From: "Bajpai, Vaibhav" <v.bajpai@jacobs-university.de>
To: "STARK, BARBARA H" <bs7652@att.com>
Thread-Topic: [lmap] [ippm]     I-D Action: draft-ietf-lmap-framework-05.txt
Thread-Index: AQHPe4SyEJR6w5z5NkWIeISBck/YzZtYmzaAgABvNACAABh9gA==
Date: Fri, 30 May 2014 15:42:18 +0000
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Subject: Re: [ippm] [lmap] I-D Action: draft-ietf-lmap-framework-05.txt
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On 30 May 2014, at 16:14, STARK, BARBARA H <bs7652@att.com> wrote:

>> Doesn't become too complicated? What is the difference between the
>> Measurement Method Role and Measurement Task and why do we need
>> the two distinct terms? Maybe it would help if you can provide a =
definition of
>> Measurement Method Role because I frankly cannot compile ' =
Measurement
>> Task is an instantiation of a Measurement Method Role', in other =
words why
>> do we need a generic term and an instantiation?
>=20
> The information model says:
>   The Measurement Task Configuration will include ...  a registry
>   entry [I-D....-ippm-...] that defines the Measurement
>   Task.  The MA itself will resolve the registry entry to a local
>   executable program.  In addition the Measurement Task is specialised
>   through a set of configuration Options.  The nature and number of
>   these Options will depend upon the Measurement Task and will be
>   defined in the Measurement Task Registry.

The framework document [1] makes the measurement method refer to the =
IPPM metrics registries.
The information model (IM) [2] on the other hand, makes the measurement =
task refer to the=20
IPPM metrics registries. If we really want to use both Measurement =
Method and Measurement Task=20
terminologies, perhaps we need to update the IM to adhere better to the =
framework document:

   object {
       string              ma-method-name;
       urn                 ma-method-registry;
       ma-task-obj         ma-task-obj<0..*>;
   } ma-method-obj;=20

   object {
       string              ma-task-name;
       string              ma-task-options<0..*>;
      [string              ma-task-cycle-id;]
   } ma-task-obj;=20

> So the information-model makes the Measurement Task an instantiation =
of a local executable program. But how does the Controller learn about =
what registry entries the MA is capable of resolving to local executable =
programs? That is, how does the Controller know what local executable =
programs exist on the MA? I had thought this would be part of the =
capabilities that get reported to the Controller by the MA. Bu the =
ma-capability object has some distinct other undefined measurement-id =
urn and doesn't provide the Controller with any list of registry entries =
that the MA is capable of resolving. Hopefully, this is just something =
that needs to be fixed in the information-model, and not an intentional =
lack of relationship between ma-capability and ma-task (or =
ma-task-registry).=20

I also think so:

   object {
       urn                 ma-measurement-id;
      [string              ma-measurement-version;]
       ma-task-obj         ma-task-obj<0..*>;
   } ma-capability-obj;

The ma-tasks<0...*> objects sent in the instruction object will now be =
subset of the
the ma-tasks<0=85*> objects sent by the MA.


> Anyway, information-model says (wrt capability reporting) that =
"Capabilities include ... the set of Measurement Tasks that are actually =
installed or available on the MA." This, to me, is a problematic =
statement. Now, not only is the term Measurement Task being used to =
describe an instantiation of a local executable program with a specific =
set of values for input parameters (ma-task-options<0..*>) and perhaps a =
particular cycle id (ma-task-cycle-id) with a pointer to the local =
executable program (ma-task-registry), the term is also being used as =
synonymous with the local executable program.=20
>=20
> I do not think that "Measurement Task" should be used as another name =
for the local executable program. I would like to see this fixed. It =
would also appear that the ma-capability object is supposed to be the =
object that provides the information regarding these local executable =
programs that are installed/available on the MA. But the word =
"capabilities" is also said to include interface details. So "local =
executable programs" is a subset of "capabilities" (which means =
"capabilities" is also not an appropriate word to use to just mean =
"local executable programs").=20
>=20
> So do these "local executable programs" need a better name, so we =
aren't tempted to call them "Measurement Task"? Or maybe we can just =
call them "Local Executable Programs=94

A locally executable program can be any program (for e.g. ls) within the =
MA, no?=20
Shouldn=92t we restrict the terminology to programs that do =
measurements?

> and define them as functionality in a MA that allows the MA to perform =
a specific role of a Measurement Method. And Measurement Task is an =
instantiation of a Local Executable Program. Because Measurement Task is =
definitely not an instantiation of the holistic Measurement Method. The =
ping initiator Local Executable Program can be completely distinct from =
the ping responder Local Executable Program. And it often is.
> Barbara

[1] http://tools.ietf.org/html/draft-ietf-lmap-framework-05
[2] http://tools.ietf.org/html/draft-ietf-lmap-information-model-00

Best, Vaibhav

-----------------------------------------------------
Vaibhav Bajpai

Research I, Room 86
Computer Networks and Distributed Systems  (CNDS) Lab
School of Engineering and Sciences
Jacobs University Bremen, Germany

www.vaibhavbajpai.com


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From nobody Sun Jun  1 12:05:02 2014
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From: "Carey, Timothy (Timothy)" <timothy.carey@alcatel-lucent.com>
To: Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>, "STARK, BARBARA H" <bs7652@att.com>
Thread-Topic: [lmap] UDP Echo example
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Date: Sat, 31 May 2014 19:10:19 +0000
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Subject: Re: [ippm] [lmap] UDP Echo example
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Juergen,

Wouldn't the selected interface for the UDP test instance be part of the op=
tions for the task. The options have the "parameters" for the test which is=
 specific for each test, right?

As for a MA telling the controller its capabilities - wouldn't it be part o=
f the ma-interface-obj?

BR,
Tim

-----Original Message-----
From: Juergen Schoenwaelder [mailto:j.schoenwaelder@jacobs-university.de]=20
Sent: Friday, May 30, 2014 5:56 PM
To: STARK, BARBARA H
Cc: ippm@ietf.org; lmap@ietf.org
Subject: Re: [lmap] UDP Echo example

On Fri, May 30, 2014 at 05:20:05PM +0000, STARK, BARBARA H wrote:
>=20
> If we look at the TR-069 data model in [TR-143], we see that MA1's UDP Ec=
ho server functionality has input parameters of (1) a port to listen on and=
 (2) a source IP address (MA1 will only respond to UDP packets from this so=
urce IP address). In an LMAP world, I think these would be the information-=
model ma-task-options<0..*>. There is also an input of the network interfac=
e to listen on. [I see that while information-model lets the MA tell the Co=
ntroller what its interfaces are, there's no current linkage to allow an in=
terface to be specified for a ma-task-obj. I think this is probably just an=
 oversight and needs to be added.]=20

The interface is just another task option.

/js

--=20
Juergen Schoenwaelder           Jacobs University Bremen gGmbH
Phone: +49 421 200 3587         Campus Ring 1, 28759 Bremen, Germany
Fax:   +49 421 200 3103         <http://www.jacobs-university.de/>



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hi Al, all,

Thanks for the updated draft!

The changes appear to be extensive enough that a second WGLC is =
warranted; please provide any additional comments (or just a statement =
that you've read the new doc and it's OK) by Friday, June 13.

Thanks,

Brian (as chair)

On 29 May 2014, at 21:50, MORTON, ALFRED C (AL) <acmorton@att.com> =
wrote:

> Hi IPPM, and Lingli, Charles, and Dan in particular:
>=20
> Thanks for providing comments on this draft during WGLC.
> A version which hopefully addresses all your comments is here:
> http://tools.ietf.org/html/draft-ietf-ippm-lmap-path-03
>=20
> It should be fairly easy to find where your comments were=20
> addressed, using the diff file:
> http://tools.ietf.org/rfcdiff?url2=3Ddraft-ietf-ippm-lmap-path-03.txt
>=20
> Some changes are fairly extensive, to address Charles'
> request for rules for example. The co-authors had some fun with=20
> that aspect.
>=20
> I remember one specific question from Charles, "what is [SK]?"
> it's just a very tight reference to an informative white paper:
>=20
>   [SK]       Crawford, Sam., "Test Methodology White Paper", SamKnows
>              Whitebox Briefing Note
>              http://www.samknows.com/broadband/index.php, July 2011.
>=20
> regards,
> Al (for the co-authors)
>=20
> _______________________________________________
> ippm mailing list
> ippm@ietf.org
> https://www.ietf.org/mailman/listinfo/ippm


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From nobody Mon Jun  2 09:08:05 2014
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Subject: [ippm] Call for Calls for Adoption was Fwd: Document Action: 'Advanced Stream and Sampling Framework for IPPM' to Informational RFC (draft-ietf-ippm-2330-update-05.txt)
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Greetings, IPPM,

Thanks and congratulations to the authors on the approval of our first =
draft from the "new" (March 2013) charter!

As we're moving forward in our charter, it's time to consider adopting =
new drafts.

I've seen implicit requests for a call for adoption for the following =
two drafts, which were not adopted in Orlando because we wanted to see =
if 2330-update would change their scope significantly:

draft-morton-ippm-2679-bis-04
draft-morton-ippm-2680-bis-02

We have at least one explicit request for a call for adoption:

draft-hedin-ippm-type-p-monitor-03

If there are other documents which you would like to have considered for =
adoption as IPPM WG items in the next round under the present charter, =
please notify the chairs at ippm-chairs@tools.ietf.org by Friday, June =
6th; we'll run the call for adoption after that.

Thanks, cheers,

Brian (as chair)


Begin forwarded message:

> From: The IESG <iesg-secretary@ietf.org>
> Subject: Document Action: 'Advanced Stream and Sampling Framework for =
IPPM' to Informational RFC (draft-ietf-ippm-2330-update-05.txt)
> Date: 29 May 2014 21:41:55 GMT+2
> Resent-To: bill@wjcerveny.com, ietf@trammell.ch,
> To: IETF-Announce <ietf-announce@ietf.org>
> Cc: RFC Editor <rfc-editor@rfc-editor.org>, ippm mailing list =
<ippm@ietf.org>, ippm chair <ippm-chairs@tools.ietf.org>
>=20
> The IESG has approved the following document:
> - 'Advanced Stream and Sampling Framework for IPPM'
>  (draft-ietf-ippm-2330-update-05.txt) as Informational RFC
>=20
> This document is the product of the IP Performance Metrics Working =
Group.
>=20
> The IESG contact persons are Spencer Dawkins and Martin Stiemerling.
>=20
> A URL of this Internet Draft is:
> http://datatracker.ietf.org/doc/draft-ietf-ippm-2330-update/
>=20
>=20
>=20
>=20
>=20
> Technical Summary
>=20
>   To obtain repeatable results in modern networks, test descriptions=20=

>   need an expanded stream parameter framework that also augments=20
>   aspects specified as Type-P for test packets.  This memo updates
>   the IP Performance Metrics (IPPM) Framework, RFC 2330, with=20
>   advanced considerations for measurement methodology and testing. =20
>   The existing framework mostly assumes deterministic connectivity,=20
>   and that a single test stream will represent the characteristics of =
the=20
>   path when it is aggregated with other flows.  Networks have evolved=20=

>   and test stream descriptions must evolve with them, otherwise=20
>   unexpected network features may dominate the measured performance. =20=

>   This memo describes new stream parameters for both network=20
>   characterization and support of application design using IPPM =
metrics.
>=20
> Working Group Summary
>=20
>   This draft was first introduced to the working group in October =
2012.=20
>   Support for the draft was indicated at meetings with no dissent.
>=20
> Document Quality
>=20
>   As an update to the IPPM Framework, this document adds=20
>   new and updated considerations for stream parameters.
>=20
>   The document shepherd reviewed the document as a =93-02=94=20
>   draft and reviewed the changes which constitute =93-03=94 and =93-04=94=
.
>=20
>   As documented, other topics in the IPPM Framework which=20
>   might be updated or augmented are deferred to future work.  This=20
>   includes the topics of passive and various forms of of hybrid=20
>   active/passive measurements.
>=20
> Personnel
>=20
>   The document shepherd was Bill Cerveny. The responsible=20
>   area director is Spencer Dawkins.


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Subject: [ippm] WGLC for draft-ietf-ippm-rate-problem-05
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Greetings, all,

Working Group Last Call for draft-ietf-ippm-rate-problem-05 begins =
today,=20
until Wednesday 18 June 2014. Please send comments to ippm@ietf.org, =
including simple indications that you've reviewed the document and are =
okay with sending it up to the IESG for publication.

Thanks, cheers,

Brian (as chair)

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Subject: Re: [ippm] [lmap] Follow-up on recent discussion about draft-ietf-lmap-framework-05.txt
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BTW, =C2=A0I wanted to give you a heads-up that the team which has been wor=
king on the Passive Framework for IPPM (draft-zheng-ippm-framework-passive-=
00) will be posting our draft on June 11th.=0A=0AWe will have discussion an=
d definition of many of the terms involved in Passive Monitoring from the I=
PPM point of view.=0A=C2=A0=0AThanks,=0A=0ANalini Elkins=0AInside Products,=
 Inc.=0A(831) 659-8360=0Awww.insidethestack.com=0A=0A=0A=0A________________=
________________=0A From: "philip.eardley@bt.com" <philip.eardley@bt.com>=
=0ATo: vero.zheng@huawei.com; gregimirsky@gmail.com; mach.chen@huawei.com =
=0ACc: lmap@ietf.org =0ASent: Wednesday, June 4, 2014 8:37 AM=0ASubject: Re=
: [lmap] Follow-up on recent discussion about draft-ietf-lmap-framework-05.=
txt=0A =0A=0A=0A=C2=A0=0AIn the Intro, add to the paragraph about Active & =
Passive Tasks:=0AThere may also be Measurement Tasks that are intermediate =
between Passive and Active ones; consideration is outside the initial LMAP =
work scope.=0AVero>> If we tweak the definitions carefully, we may don=E2=
=80=99t need to exclude any measurement tasks outside scope.=0A=C2=A0=0A[ph=
il] ok, let's shorten to "There may also be Measurement Tasks that are inte=
rmediate between Passive and Active ones"=0A=C2=A0=0A=C2=A0=0A=0A__________=
_____________________________________=0Almap mailing list=0Almap@ietf.org=
=0Ahttps://www.ietf.org/mailman/listinfo/lmap
--1552829269-483949487-1401897265=:73162
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<html><body><div style=3D"color:#000; background-color:#fff; font-family:ar=
ial, helvetica, sans-serif;font-size:12pt"><div><span>BTW, &nbsp;I wanted t=
o give you a heads-up that the team which has been working on the Passive F=
ramework for IPPM (draft-zheng-ippm-framework-passive-00) will be posting o=
ur draft on June 11th.</span></div><div style=3D"color: rgb(0, 0, 0); font-=
size: 16px; font-family: arial, helvetica, sans-serif; font-style: normal; =
background-color: transparent;"><span><br></span></div><div style=3D"color:=
 rgb(0, 0, 0); font-size: 16px; font-family: arial, helvetica, sans-serif; =
font-style: normal; background-color: transparent;"><span>We will have disc=
ussion and definition of many of the terms involved in Passive Monitoring f=
rom the IPPM point of view.</span></div><div></div><div>&nbsp;</div><div>Th=
anks,</div><div><br></div><div>Nalini Elkins<br>Inside Products, Inc.<br>(8=
31) 659-8360<br>www.insidethestack.com<br></div><br>  <div
 style=3D"font-family: arial, helvetica, sans-serif; font-size: 12pt;"> <di=
v style=3D"font-family: 'times new roman', 'new york', times, serif; font-s=
ize: 12pt;"> <div dir=3D"ltr"> <hr size=3D"1">  <font size=3D"2" face=3D"Ar=
ial"> <b><span style=3D"font-weight:bold;">From:</span></b> "philip.eardley=
@bt.com" &lt;philip.eardley@bt.com&gt;<br> <b><span style=3D"font-weight: b=
old;">To:</span></b> vero.zheng@huawei.com; gregimirsky@gmail.com; mach.che=
n@huawei.com <br><b><span style=3D"font-weight: bold;">Cc:</span></b> lmap@=
ietf.org <br> <b><span style=3D"font-weight: bold;">Sent:</span></b> Wednes=
day, June 4, 2014 8:37 AM<br> <b><span style=3D"font-weight: bold;">Subject=
:</span></b> Re: [lmap] Follow-up on recent discussion about draft-ietf-lma=
p-framework-05.txt<br> </font> </div> <div class=3D"y_msg_container"><br><d=
iv id=3D"yiv5164760282"><style> _filtered #yiv5164760282 {=0A}=0A _filtered=
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a;}=0A _filtered #yiv5164760282 {=0A}=0A _filtered #yiv5164760282 {margin:7=
2.0pt 90.0pt 72.0pt 90.0pt;}=0A#yiv5164760282 P.yiv5164760282MsoNormal {=0A=
MARGIN:0cm 0cm 0pt;FONT-SIZE:12pt;}=0A#yiv5164760282 LI.yiv5164760282MsoNor=
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le18 {=0ACOLOR:#1f497d;}=0A#yiv5164760282 SPAN.yiv5164760282HTMLChar {=0A}=
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=0A=0A}=0A</style><style></style><style>#yiv5164760282 #yiv5164760282 --P {=
=0AMARGIN-TOP:0px;MARGIN-BOTTOM:0px;}=0A#yiv5164760282 </style><div>=0A<div=
 style=3D"font-family: Tahoma; direction: ltr; color: rgb(0, 0, 0); font-si=
ze: 10px;">=0A<div><span lang=3D"EN-US" style=3D"font-family: Calibri, sans=
-serif; color: rgb(31, 73, 125); font-size: 10.5pt;"></span>&nbsp;</div>=0A=
<div>=0A<div class=3D"yiv5164760282WordSection1">=0A<div><span lang=3D"EN-G=
B">In the Intro, add to the paragraph about Active &amp; Passive Tasks:</sp=
an></div>=0A<div><span lang=3D"EN-GB">There may also be Measurement Tasks t=
hat are intermediate between Passive and Active ones; consideration is outs=
ide the initial LMAP work scope.</span></div>=0A<div class=3D"yiv5164760282=
MsoNormal"><span lang=3D"EN-US" style=3D"font-family: Calibri, sans-serif; =
color: rgb(31, 73, 125); font-size: 10.5pt;">Vero&gt;&gt; If we tweak the d=
efinitions carefully, we may don=E2=80=99t need to exclude any measurement =
tasks outside scope.</span><span lang=3D"EN-GB" style=3D"font-family: Calib=
ri, sans-serif; color: rgb(31, 73, 125); font-size: 10.5pt;"></span></div>=
=0A<div class=3D"yiv5164760282MsoNormal"><span lang=3D"EN-US" style=3D"font=
-family: Calibri, sans-serif; color: rgb(31, 73, 125); font-size: 10.5pt;">=
</span>&nbsp;</div>=0A<div class=3D"yiv5164760282MsoNormal"><span lang=3D"E=
N-US" style=3D"font-family: Calibri, sans-serif; color: rgb(31, 73, 125); f=
ont-size: 10.5pt;"><font size=3D"2" face=3D"calibri">[phil] ok, let's short=
en to "<span lang=3D"EN-GB"><font color=3D"#000000" size=3D"3" face=3D"Sims=
un">There may also=0A be Measurement Tasks that are intermediate between Pa=
ssive and Active ones"</font></span></font></span></div><div class=3D"yiv51=
64760282yqt5310756401" id=3D"yiv5164760282yqtfd34189">=0A<div class=3D"yiv5=
164760282MsoNormal"><span lang=3D"EN-US" style=3D"font-family: Calibri, san=
s-serif; color: rgb(31, 73, 125); font-size: 10.5pt;"><font color=3D"#00000=
0" size=3D"3" face=3D"calibri"><span lang=3D"EN-GB"></span></font></span>&n=
bsp;</div>=0A<div class=3D"yiv5164760282MsoNormal"><span lang=3D"EN-US"></s=
pan>&nbsp;</div>=0A</div></div><div class=3D"yiv5164760282yqt5310756401" id=
=3D"yiv5164760282yqtfd00675">=0A</div></div><div class=3D"yiv5164760282yqt5=
310756401" id=3D"yiv5164760282yqtfd85450">=0A</div></div><div class=3D"yiv5=
164760282yqt5310756401" id=3D"yiv5164760282yqtfd09448">=0A</div></div></div=
><br><div class=3D"yqt5310756401" id=3D"yqtfd37116">_______________________=
________________________<br clear=3D"none">lmap mailing list<br clear=3D"no=
ne"><a shape=3D"rect" ymailto=3D"mailto:lmap@ietf.org" href=3D"mailto:lmap@=
ietf.org">lmap@ietf.org</a><br clear=3D"none"><a shape=3D"rect" href=3D"htt=
ps://www.ietf.org/mailman/listinfo/lmap" target=3D"_blank">https://www.ietf=
.org/mailman/listinfo/lmap</a><br clear=3D"none"></div><br><br></div> </div=
> </div>  </div></body></html>
--1552829269-483949487-1401897265=:73162--


From nobody Thu Jun  5 04:56:22 2014
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Subject: [ippm] I-D Action: draft-ietf-ippm-ipsec-03.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 IP Performance Metrics Working Group of the IETF.

        Title           : Network Performance Measurement for IPsec
        Authors         : Kostas Pentikousis
                          Yang Cui
                          Emma Zhang
	Filename        : draft-ietf-ippm-ipsec-03.txt
	Pages           : 12
	Date            : 2014-06-05

Abstract:
   The O/TWAMP security mechanism requires that both the client and
   server endpoints possess a shared secret.  Since the currently-
   standardized O/TWAMP security mechanism only supports a pre-shared
   key mode, large scale deployment of O/TWAMP is hindered
   significantly.  At the same time, recent trends point to wider IKEv2
   deployment which, in turn, calls for mechanisms and methods that
   enable tunnel end-users, as well as operators, to measure one-way and
   two-way network performance in a standardized manner.  This document
   discusses the use of keys derived from an IKEv2 SA as the shared key
   in O/TWAMP.  If the shared key can be derived from the IKEv2 SA, O/
   TWAMP can support certificate-based key exchange, which would allow
   for more operational flexibility and efficiency.  The key derivation
   presented in this document can also facilitate automatic key
   management.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-ippm-ipsec/

There's also a htmlized version available at:
http://tools.ietf.org/html/draft-ietf-ippm-ipsec-03

A diff from the previous version is available at:
http://www.ietf.org/rfcdiff?url2=draft-ietf-ippm-ipsec-03


Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.

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


From nobody Thu Jun  5 05:02:09 2014
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From: Kostas Pentikousis <k.pentikousis@eict.de>
To: "ippm@ietf.org" <ippm@ietf.org>, "ipsec@ietf.org" <ipsec@ietf.org>
Date: Thu, 5 Jun 2014 14:01:50 +0200
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From: "Bajpai, Vaibhav" <v.bajpai@jacobs-university.de>
To: "ippm@ietf.org" <ippm@ietf.org>
Thread-Topic: [draft-ietf-ippm-lmap-path-03]: cgn deployments 
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Subject: [ippm] [draft-ietf-ippm-lmap-path-03]: cgn deployments
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Hello,

This is with reference to draft-ietf-ippm-lmap-path-03 [1].
[1] http://tools.ietf.org/html/draft-ietf-ippm-lmap-path-03

Translation Between Reference Path and Various Technologies
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

   Subsc. -- Private -- Private -- Service-- Intra IP -- GRA -- Transit
   device     Net #1     Net #2    Demarc.    Access     GW     GRA GW
   mp000                            mp100      mp150    mp190    mp200
   |--UE--|------------CPE/NAT--------|------|-BRAS-|------|
                                      |------DSL Network---|
   |_______Un-managed sub-path________|__Managed sub-path__|

The BRAS is deployed at mp150 within the reference path. However, if I =
compare
this with the specific case of CGN deployments:

   Subsc. -- Private ------------- Service-- Intra IP -- GRA -- Transit
   device     Net #1               Demarc.    Access     GW     GRA GW
   mp000                            mp100      mp150    mp190    mp200
   |--UE--|------------CPE/NAT--------|------|-CGN-|------|
                                      |-----DSL Network---|
   |_______Un-managed sub-path________|_Managed sub-path__|

               GRA =3D Globally Routable Address, GW =3D Gateway

   A Carrier Grade NAT (CGN) deployed in the Service Provider's
   access network would be positioned between mp100 and mp190, and
   the egress side of the CGN may be designated mp150. mp150 is
   generally an intermediate measurement point in the same address
   space as mp190.

The CGN is also deployed at mp150 in the ^ figure. Is the CGN embedded =
within
the BRAS? If not, it would be nice to know if the CGN is deployed before =
the
BRAS or after the BRAS within the reference path.

Best, Vaibhav

-----------------------------------------------------
Vaibhav Bajpai

Research I, Room 86
Computer Networks and Distributed Systems  (CNDS) Lab
School of Engineering and Sciences
Jacobs University Bremen, Germany

www.vaibhavbajpai.com

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From nobody Thu Jun 12 07:00:26 2014
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From: Christofer Flinta <christofer.flinta@ericsson.com>
To: "ippm@ietf.org" <ippm@ietf.org>
Thread-Topic: [ippm] WGLC for draft-ietf-ippm-rate-problem-05
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Hi IPPM group,

I have a comment on the rate-problem draft.

I fully agree that asymmetrical packet size can be an important feature for=
 rate measurements. However, I don't find it necessary to have it mandatory=
 for all types of measurements, as specified in section 5:

"The ability to control packet size on the tested path and enable
   asymmetrical packet size testing in a two-way architecture are
   REQUIRED.  This allows both the conventional symmetric packet size
   testing and asymmetrical packet size testing to employed to solve
   various aspects of rate measurement: real-time communications often
   have symmetrical streams, while file transfers have highly
   asymmetrical streams in the data and acknowledgement traffic
   directions."

In this paragraph the requirement on asymmetrical packet size is supported =
by two examples: real-time communications and file transfer. However, the t=
ext states that real-time communications are often symmetrical, while file =
transfer is asymmetrical (because of TCP ACKs). This means that the need fo=
r the asymmetrical size is actually mainly for TCP test streams, while most=
 UDP test streams will use symmetrical size.

Therefore, I think asymmetrical size should be mandatory only for TCP test =
streams and optional for UDP test streams. I suggest changing the first par=
t of the paragraph to:

"The ability to control packet size on the tested path is REQUIRED. Asymmet=
rical packet size testing in a two-way architecture is REQUIRED for TCP tes=
t streams and OPTIONAL for UDP test streams."

BR,
Christofer



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>
<meta name=3D"Generator" content=3D"Microsoft Exchange Server">
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<font face=3D"Courier New" size=3D"2"><span style=3D"font-size:10pt;">
<div><font color=3D"#1F497D">Hi IPPM group,</font></div>
<div><font color=3D"#1F497D">&nbsp;</font></div>
<div><font color=3D"#1F497D">I have a comment on the rate-problem draft.</f=
ont></div>
<div><font color=3D"#1F497D">&nbsp;</font></div>
<div><font color=3D"#1F497D">I fully agree that asymmetrical packet size ca=
n be an important feature for rate measurements. However, I don&#8217;t fin=
d it necessary to have it mandatory for all types of measurements, as speci=
fied in section 5:</font></div>
<div><font color=3D"#1F497D">&nbsp;</font></div>
<div><font face=3D"Calibri" color=3D"#1F497D">&#8220;<font face=3D"Courier =
New" color=3D"black">The ability to control packet size on the tested path =
and enable</font></font></div>
<div>&nbsp;&nbsp; asymmetrical packet size testing in a two-way architectur=
e are</div>
<div>&nbsp;&nbsp; REQUIRED.&nbsp; This allows both the conventional symmetr=
ic packet size</div>
<div>&nbsp;&nbsp; testing and asymmetrical packet size testing to employed =
to solve</div>
<div>&nbsp;&nbsp; various aspects of rate measurement: real-time communicat=
ions often</div>
<div>&nbsp;&nbsp; have symmetrical streams, while file transfers have highl=
y</div>
<div>&nbsp;&nbsp; asymmetrical streams in the data and acknowledgement traf=
fic</div>
<div>&nbsp;&nbsp; directions.<font face=3D"Calibri" size=3D"2" color=3D"#1F=
497D"><span style=3D"font-size:11pt;">&#8221;</span></font></div>
<div><font face=3D"Calibri" size=3D"2" color=3D"#1F497D"><span style=3D"fon=
t-size:11pt;">&nbsp;</span></font></div>
<div><font size=3D"2" color=3D"#1F497D"><span style=3D"font-size:11pt;">In =
this paragraph the requirement on asymmetrical packet size is supported by =
two examples: real-time communications and file transfer. However, the text=
 states that real-time communications
are often symmetrical, while file transfer is asymmetrical (because of TCP =
ACKs). This means that the need for the asymmetrical size is actually mainl=
y for TCP test streams, while most UDP test streams will use symmetrical si=
ze. </span></font></div>
<div><font face=3D"Calibri" size=3D"2" color=3D"#1F497D"><span style=3D"fon=
t-size:11pt;">&nbsp;</span></font></div>
<div><font size=3D"2" color=3D"#1F497D"><span style=3D"font-size:11pt;">The=
refore, I think asymmetrical size should be mandatory only for TCP test str=
eams and optional for UDP test streams. I suggest changing the first part o=
f the paragraph to:</span></font></div>
<div><font face=3D"Calibri" size=3D"2" color=3D"#1F497D"><span style=3D"fon=
t-size:11pt;">&nbsp;</span></font></div>
<div><font face=3D"Calibri" color=3D"#1F497D">&#8220;<font face=3D"Courier =
New" color=3D"black">The ability to control packet size on the tested path =
is REQUIRED. Asymmetrical packet size testing in a two-way architecture is =
REQUIRED </font><font face=3D"Courier New" color=3D"red">for
TCP test streams and OPTIONAL for UDP test streams</font><font face=3D"Cour=
ier New" color=3D"black">.&#8221;</font></font></div>
<div>&nbsp;</div>
<div><font size=3D"2"><span style=3D"font-size:11pt;">BR,</span></font></di=
v>
<div><font size=3D"2"><span style=3D"font-size:11pt;">Christofer</span></fo=
nt></div>
<div><font face=3D"Calibri" size=3D"2"><span style=3D"font-size:11pt;">&nbs=
p;</span></font></div>
<div><font face=3D"Calibri" size=3D"2"><span style=3D"font-size:11pt;">&nbs=
p;</span></font></div>
</span></font>
</body>
</html>

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From: "MORTON, ALFRED C (AL)" <acmorton@att.com>
To: Christofer Flinta <christofer.flinta@ericsson.com>, "ippm@ietf.org" <ippm@ietf.org>
Date: Thu, 12 Jun 2014 10:13:08 -0400
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Subject: Re: [ippm] WGLC for draft-ietf-ippm-rate-problem-05
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Hi Christofer,

This paragraph and requirement is the result of much discussion and
compromise (already).

We do not mandate measurements, but for rate measurement we mandate
the capability to control packet sizes including asymmetrical sizes.
There are circumstances where it is valid to test with UDP using
asymmetrical sizes, so we don't want to mix transport layers with
this requirement.

regards,
Al

From: ippm [mailto:ippm-bounces@ietf.org] On Behalf Of Christofer Flinta
Sent: Thursday, June 12, 2014 10:00 AM
To: ippm@ietf.org
Subject: [ippm] WGLC for draft-ietf-ippm-rate-problem-05

Hi IPPM group,

I have a comment on the rate-problem draft.

I fully agree that asymmetrical packet size can be an important feature for=
 rate measurements. However, I don't find it necessary to have it mandatory=
 for all types of measurements, as specified in section 5:

"The ability to control packet size on the tested path and enable
   asymmetrical packet size testing in a two-way architecture are
   REQUIRED.  This allows both the conventional symmetric packet size
   testing and asymmetrical packet size testing to employed to solve
   various aspects of rate measurement: real-time communications often
   have symmetrical streams, while file transfers have highly
   asymmetrical streams in the data and acknowledgement traffic
   directions."

In this paragraph the requirement on asymmetrical packet size is supported =
by two examples: real-time communications and file transfer. However, the t=
ext states that real-time communications are often symmetrical, while file =
transfer is asymmetrical (because of TCP ACKs). This means that the need fo=
r the asymmetrical size is actually mainly for TCP test streams, while most=
 UDP test streams will use symmetrical size.

Therefore, I think asymmetrical size should be mandatory only for TCP test =
streams and optional for UDP test streams. I suggest changing the first par=
t of the paragraph to:

"The ability to control packet size on the tested path is REQUIRED. Asymmet=
rical packet size testing in a two-way architecture is REQUIRED for TCP tes=
t streams and OPTIONAL for UDP test streams."

BR,
Christofer



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</o:shapelayout></xml><![endif]--></head><body lang=3DEN-US link=3Dblue vli=
nk=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span style=3D'f=
ont-size:10.0pt;font-family:"Courier New"'>Hi Christofer,<o:p></o:p></span>=
</p><p class=3DMsoNormal><span style=3D'font-size:10.0pt;font-family:"Couri=
er New"'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span style=3D'fo=
nt-size:10.0pt;font-family:"Courier New"'>This paragraph and requirement is=
 the result of much discussion and<o:p></o:p></span></p><p class=3DMsoNorma=
l><span style=3D'font-size:10.0pt;font-family:"Courier New"'>compromise (al=
ready). <o:p></o:p></span></p><p class=3DMsoNormal><span style=3D'font-size=
:10.0pt;font-family:"Courier New"'><o:p>&nbsp;</o:p></span></p><p class=3DM=
soNormal><span style=3D'font-size:10.0pt;font-family:"Courier New"'>We do n=
ot mandate measurements, but for rate measurement we mandate<o:p></o:p></sp=
an></p><p class=3DMsoNormal><span style=3D'font-size:10.0pt;font-family:"Co=
urier New"'>the capability to control packet sizes including asymmetrical s=
izes.<o:p></o:p></span></p><p class=3DMsoNormal><span style=3D'font-size:10=
.0pt;font-family:"Courier New"'>There are circumstances where it is valid t=
o test with UDP using <o:p></o:p></span></p><p class=3DMsoNormal><span styl=
e=3D'font-size:10.0pt;font-family:"Courier New"'>asymmetrical sizes, so we =
don't want to mix transport layers with<o:p></o:p></span></p><p class=3DMso=
Normal><span style=3D'font-size:10.0pt;font-family:"Courier New"'>this requ=
irement.<o:p></o:p></span></p><p class=3DMsoNormal><span style=3D'font-size=
:10.0pt;font-family:"Courier New"'><o:p>&nbsp;</o:p></span></p><p class=3DM=
soNormal><span style=3D'font-size:10.0pt;font-family:"Courier New"'>regards=
,<o:p></o:p></span></p><p class=3DMsoNormal><span style=3D'font-size:10.0pt=
;font-family:"Courier New"'>Al<o:p></o:p></span></p><p class=3DMsoNormal><s=
pan style=3D'font-size:10.0pt;font-family:"Courier New"'><o:p>&nbsp;</o:p><=
/span></p><div style=3D'border:none;border-left:solid blue 1.5pt;padding:0i=
n 0in 0in 4.0pt'><div><div style=3D'border:none;border-top:solid #B5C4DF 1.=
0pt;padding:3.0pt 0in 0in 0in'><p class=3DMsoNormal><b><span style=3D'font-=
size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style=
=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'> ippm [mailto:ippm-=
bounces@ietf.org] <b>On Behalf Of </b>Christofer Flinta<br><b>Sent:</b> Thu=
rsday, June 12, 2014 10:00 AM<br><b>To:</b> ippm@ietf.org<br><b>Subject:</b=
> [ippm] WGLC for draft-ietf-ippm-rate-problem-05<o:p></o:p></span></p></di=
v></div><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><p class=3DMsoNormal=
><span style=3D'font-size:10.0pt;font-family:"Courier New";color:#1F497D'>H=
i IPPM group,</span><span style=3D'font-size:10.0pt;font-family:"Courier Ne=
w"'><o:p></o:p></span></p></div><div><p class=3DMsoNormal><span style=3D'fo=
nt-size:10.0pt;font-family:"Courier New";color:#1F497D'>&nbsp;</span><span =
style=3D'font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>=
</div><div><p class=3DMsoNormal><span style=3D'font-size:10.0pt;font-family=
:"Courier New";color:#1F497D'>I have a comment on the rate-problem draft.</=
span><span style=3D'font-size:10.0pt;font-family:"Courier New"'><o:p></o:p>=
</span></p></div><div><p class=3DMsoNormal><span style=3D'font-size:10.0pt;=
font-family:"Courier New";color:#1F497D'>&nbsp;</span><span style=3D'font-s=
ize:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p></div><div><p c=
lass=3DMsoNormal><span style=3D'font-size:10.0pt;font-family:"Courier New";=
color:#1F497D'>I fully agree that asymmetrical packet size can be an import=
ant feature for rate measurements. However, I don&#8217;t find it necessary=
 to have it mandatory for all types of measurements, as specified in sectio=
n 5:</span><span style=3D'font-size:10.0pt;font-family:"Courier New"'><o:p>=
</o:p></span></p></div><div><p class=3DMsoNormal><span style=3D'font-size:1=
0.0pt;font-family:"Courier New";color:#1F497D'>&nbsp;</span><span style=3D'=
font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p></div><di=
v><p class=3DMsoNormal><span style=3D'font-size:10.0pt;font-family:"Calibri=
","sans-serif";color:#1F497D'>&#8220;</span><span style=3D'font-size:10.0pt=
;font-family:"Courier New";color:black'>The ability to control packet size =
on the tested path and enable</span><span style=3D'font-size:10.0pt;font-fa=
mily:"Courier New"'><o:p></o:p></span></p></div><div><p class=3DMsoNormal><=
span style=3D'font-size:10.0pt;font-family:"Courier New"'>&nbsp;&nbsp; asym=
metrical packet size testing in a two-way architecture are<o:p></o:p></span=
></p></div><div><p class=3DMsoNormal><span style=3D'font-size:10.0pt;font-f=
amily:"Courier New"'>&nbsp;&nbsp; REQUIRED.&nbsp; This allows both the conv=
entional symmetric packet size<o:p></o:p></span></p></div><div><p class=3DM=
soNormal><span style=3D'font-size:10.0pt;font-family:"Courier New"'>&nbsp;&=
nbsp; testing and asymmetrical packet size testing to employed to solve<o:p=
></o:p></span></p></div><div><p class=3DMsoNormal><span style=3D'font-size:=
10.0pt;font-family:"Courier New"'>&nbsp;&nbsp; various aspects of rate meas=
urement: real-time communications often<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span style=3D'font-size:10.0pt;font-family:"Courier New"=
'>&nbsp;&nbsp; have symmetrical streams, while file transfers have highly<o=
:p></o:p></span></p></div><div><p class=3DMsoNormal><span style=3D'font-siz=
e:10.0pt;font-family:"Courier New"'>&nbsp;&nbsp; asymmetrical streams in th=
e data and acknowledgement traffic<o:p></o:p></span></p></div><div><p class=
=3DMsoNormal><span style=3D'font-size:10.0pt;font-family:"Courier New"'>&nb=
sp;&nbsp; directions.</span><span style=3D'font-size:11.0pt;font-family:"Ca=
libri","sans-serif";color:#1F497D'>&#8221;</span><span style=3D'font-size:1=
0.0pt;font-family:"Courier New"'><o:p></o:p></span></p></div><div><p class=
=3DMsoNormal><span style=3D'font-size:11.0pt;font-family:"Calibri","sans-se=
rif";color:#1F497D'>&nbsp;</span><span style=3D'font-size:10.0pt;font-famil=
y:"Courier New"'><o:p></o:p></span></p></div><div><p class=3DMsoNormal><spa=
n style=3D'font-size:11.0pt;font-family:"Courier New";color:#1F497D'>In thi=
s paragraph the requirement on asymmetrical packet size is supported by two=
 examples: real-time communications and file transfer. However, the text st=
ates that real-time communications are often symmetrical, while file transf=
er is asymmetrical (because of TCP ACKs). This means that the need for the =
asymmetrical size is actually mainly for TCP test streams, while most UDP t=
est streams will use symmetrical size. </span><span style=3D'font-size:10.0=
pt;font-family:"Courier New"'><o:p></o:p></span></p></div><div><p class=3DM=
soNormal><span style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif"=
;color:#1F497D'>&nbsp;</span><span style=3D'font-size:10.0pt;font-family:"C=
ourier New"'><o:p></o:p></span></p></div><div><p class=3DMsoNormal><span st=
yle=3D'font-size:11.0pt;font-family:"Courier New";color:#1F497D'>Therefore,=
 I think asymmetrical size should be mandatory only for TCP test streams an=
d optional for UDP test streams. I suggest changing the first part of the p=
aragraph to:</span><span style=3D'font-size:10.0pt;font-family:"Courier New=
"'><o:p></o:p></span></p></div><div><p class=3DMsoNormal><span style=3D'fon=
t-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>&nbsp;</spa=
n><span style=3D'font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></s=
pan></p></div><div><p class=3DMsoNormal><span style=3D'font-size:10.0pt;fon=
t-family:"Calibri","sans-serif";color:#1F497D'>&#8220;</span><span style=3D=
'font-size:10.0pt;font-family:"Courier New";color:black'>The ability to con=
trol packet size on the tested path is REQUIRED. Asymmetrical packet size t=
esting in a two-way architecture is REQUIRED </span><span style=3D'font-siz=
e:10.0pt;font-family:"Courier New";color:red'>for TCP test streams and OPTI=
ONAL for UDP test streams</span><span style=3D'font-size:10.0pt;font-family=
:"Courier New";color:black'>.&#8221;</span><span style=3D'font-size:10.0pt;=
font-family:"Courier New"'><o:p></o:p></span></p></div><div><p class=3DMsoN=
ormal><span style=3D'font-size:10.0pt;font-family:"Courier New"'>&nbsp;<o:p=
></o:p></span></p></div><div><p class=3DMsoNormal><span style=3D'font-size:=
11.0pt;font-family:"Courier New"'>BR,</span><span style=3D'font-size:10.0pt=
;font-family:"Courier New"'><o:p></o:p></span></p></div><div><p class=3DMso=
Normal><span style=3D'font-size:11.0pt;font-family:"Courier New"'>Christofe=
r</span><span style=3D'font-size:10.0pt;font-family:"Courier New"'><o:p></o=
:p></span></p></div><div><p class=3DMsoNormal><span style=3D'font-size:11.0=
pt;font-family:"Calibri","sans-serif"'>&nbsp;</span><span style=3D'font-siz=
e:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p></div><div><p cla=
ss=3DMsoNormal><span style=3D'font-size:11.0pt;font-family:"Calibri","sans-=
serif"'>&nbsp;</span><span style=3D'font-size:10.0pt;font-family:"Courier N=
ew"'><o:p></o:p></span></p></div></div></div></body></html>=

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From: Steve Baillargeon <steve.baillargeon@ericsson.com>
To: "MORTON, ALFRED C (AL)" <acmorton@att.com>, Christofer Flinta <christofer.flinta@ericsson.com>, "ippm@ietf.org" <ippm@ietf.org>
Thread-Topic: [ippm] WGLC for draft-ietf-ippm-rate-problem-05
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Subject: Re: [ippm] WGLC for draft-ietf-ippm-rate-problem-05
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Hi
+1 for Christopher.

There are circumstances where it is valid to test UDP bitrate using symmetr=
ical packet sizes.
Many UDP based protocols like UDP echo plus and TWAMP can measure/estimate =
bitrates using symmetrical packet sizes. Another concrete example is the TW=
AMP extension described in RFC 6802. The standard TWAMP specs clearly recom=
mends using symmetrical packet sizes. Why exclude existing protocols?

There were much discussion on this topic in the past but nothing has been d=
one to address it in the draft.
I have not seen any compromise other than the text proposed by Christofer.

Regards
Steve


From: ippm [mailto:ippm-bounces@ietf.org] On Behalf Of MORTON, ALFRED C (AL=
)
Sent: June-12-14 10:13 AM
To: Christofer Flinta; ippm@ietf.org
Subject: Re: [ippm] WGLC for draft-ietf-ippm-rate-problem-05

Hi Christofer,

This paragraph and requirement is the result of much discussion and
compromise (already).

We do not mandate measurements, but for rate measurement we mandate
the capability to control packet sizes including asymmetrical sizes.
There are circumstances where it is valid to test with UDP using
asymmetrical sizes, so we don't want to mix transport layers with
this requirement.

regards,
Al

From: ippm [mailto:ippm-bounces@ietf.org] On Behalf Of Christofer Flinta
Sent: Thursday, June 12, 2014 10:00 AM
To: ippm@ietf.org<mailto:ippm@ietf.org>
Subject: [ippm] WGLC for draft-ietf-ippm-rate-problem-05

Hi IPPM group,

I have a comment on the rate-problem draft.

I fully agree that asymmetrical packet size can be an important feature for=
 rate measurements. However, I don't find it necessary to have it mandatory=
 for all types of measurements, as specified in section 5:

"The ability to control packet size on the tested path and enable
   asymmetrical packet size testing in a two-way architecture are
   REQUIRED.  This allows both the conventional symmetric packet size
   testing and asymmetrical packet size testing to employed to solve
   various aspects of rate measurement: real-time communications often
   have symmetrical streams, while file transfers have highly
   asymmetrical streams in the data and acknowledgement traffic
   directions."

In this paragraph the requirement on asymmetrical packet size is supported =
by two examples: real-time communications and file transfer. However, the t=
ext states that real-time communications are often symmetrical, while file =
transfer is asymmetrical (because of TCP ACKs). This means that the need fo=
r the asymmetrical size is actually mainly for TCP test streams, while most=
 UDP test streams will use symmetrical size.

Therefore, I think asymmetrical size should be mandatory only for TCP test =
streams and optional for UDP test streams. I suggest changing the first par=
t of the paragraph to:

"The ability to control packet size on the tested path is REQUIRED. Asymmet=
rical packet size testing in a two-way architecture is REQUIRED for TCP tes=
t streams and OPTIONAL for UDP test streams."

BR,
Christofer



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<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Hi<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">&#43;1 for Christopher.<o=
:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">There are circumstances w=
here it is valid to test UDP bitrate using symmetrical packet sizes.<o:p></=
o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Many UDP based protocols =
like UDP echo plus and TWAMP can measure/estimate bitrates using symmetrica=
l packet sizes. Another concrete example is the TWAMP extension
 described in RFC 6802. The standard TWAMP specs clearly recommends using s=
ymmetrical packet sizes. Why exclude existing protocols?<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">There were much discussio=
n on this topic in the past but nothing has been done to address it in the =
draft.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">I have not seen any compr=
omise other than the text proposed by Christofer.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Regards<o:p></o:p></span>=
</p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D">Steve<o:p></o:p></span></=
p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1F497D"><o:p>&nbsp;</o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&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 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US" style=3D"font-size:10.0pt;fo=
nt-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span =
lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&qu=
ot;sans-serif&quot;"> ippm [mailto:ippm-bounces@ietf.org]
<b>On Behalf Of </b>MORTON, ALFRED C (AL)<br>
<b>Sent:</b> June-12-14 10:13 AM<br>
<b>To:</b> Christofer Flinta; ippm@ietf.org<br>
<b>Subject:</b> Re: [ippm] WGLC for draft-ietf-ippm-rate-problem-05<o:p></o=
:p></span></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">Hi Christofer,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">This paragraph and requirement is the resul=
t of much discussion and<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">compromise (already).
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">We do not mandate measurements, but for rat=
e measurement we mandate<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">the capability to control packet sizes incl=
uding asymmetrical sizes.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">There are circumstances where it is valid t=
o test with UDP using
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">asymmetrical sizes, so we don't want to mix=
 transport layers with<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">this requirement.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;"><o:p>&nbsp;</o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">regards,<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">Al<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;"><o:p>&nbsp;</o:p></span></p>
<div style=3D"border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm =
4.0pt">
<div>
<div style=3D"border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
0cm 0cm">
<p class=3D"MsoNormal"><b><span lang=3D"EN-US" style=3D"font-size:10.0pt;fo=
nt-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;">From:</span></b><span =
lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Tahoma&quot;,&qu=
ot;sans-serif&quot;"> ippm [<a href=3D"mailto:ippm-bounces@ietf.org">mailto=
:ippm-bounces@ietf.org</a>]
<b>On Behalf Of </b>Christofer Flinta<br>
<b>Sent:</b> Thursday, June 12, 2014 10:00 AM<br>
<b>To:</b> <a href=3D"mailto:ippm@ietf.org">ippm@ietf.org</a><br>
<b>Subject:</b> [ippm] WGLC for draft-ietf-ippm-rate-problem-05<o:p></o:p><=
/span></p>
</div>
</div>
<p class=3D"MsoNormal"><span lang=3D"EN-US"><o:p>&nbsp;</o:p></span></p>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:#1F497D">Hi IPPM group,</span><span la=
ng=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"=
><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:#1F497D">&nbsp;</span><span lang=3D"EN=
-US" style=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><o:p></=
o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:#1F497D">I have a comment on the rate-=
problem draft.</span><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-fa=
mily:&quot;Courier New&quot;"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:#1F497D">&nbsp;</span><span lang=3D"EN=
-US" style=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><o:p></=
o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:#1F497D">I fully agree that asymmetric=
al packet size can be an important feature for rate measurements. However, =
I don&#8217;t find it necessary to have it mandatory for
 all types of measurements, as specified in section 5:</span><span lang=3D"=
EN-US" style=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><o:p>=
</o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;;color:#1F497D">&nbsp;</span><span lang=3D"EN=
-US" style=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><o:p></=
o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&#8220;</s=
pan><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Courie=
r New&quot;;color:black">The ability to control packet size on the tested p=
ath
 and enable</span><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-famil=
y:&quot;Courier New&quot;"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">&nbsp;&nbsp; asymmetrical packet size testi=
ng in a two-way architecture are<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">&nbsp;&nbsp; REQUIRED.&nbsp; This allows bo=
th the conventional symmetric packet size<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">&nbsp;&nbsp; testing and asymmetrical packe=
t size testing to employed to solve<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">&nbsp;&nbsp; various aspects of rate measur=
ement: real-time communications often<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">&nbsp;&nbsp; have symmetrical streams, whil=
e file transfers have highly<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">&nbsp;&nbsp; asymmetrical streams in the da=
ta and acknowledgement traffic<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">&nbsp;&nbsp; directions.</span><span lang=
=3D"EN-US" style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;=
sans-serif&quot;;color:#1F497D">&#8221;</span><span lang=3D"EN-US" style=3D=
"font-size:10.0pt;font-family:&quot;Courier New&quot;"><o:p></o:p></span></=
p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;</sp=
an><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Courier=
 New&quot;"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Courier New&quot;;color:#1F497D">In this paragraph the require=
ment on asymmetrical packet size is supported by two examples: real-time co=
mmunications and file transfer. However, the text
 states that real-time communications are often symmetrical, while file tra=
nsfer is asymmetrical (because of TCP ACKs). This means that the need for t=
he asymmetrical size is actually mainly for TCP test streams, while most UD=
P test streams will use symmetrical
 size. </span><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&q=
uot;Courier New&quot;"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;</sp=
an><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Courier=
 New&quot;"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Courier New&quot;;color:#1F497D">Therefore, I think asymmetric=
al size should be mandatory only for TCP test streams and optional for UDP =
test streams. I suggest changing the first part
 of the paragraph to:</span><span lang=3D"EN-US" style=3D"font-size:10.0pt;=
font-family:&quot;Courier New&quot;"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&nbsp;</sp=
an><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Courier=
 New&quot;"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1F497D">&#8220;</s=
pan><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Courie=
r New&quot;;color:black">The ability to control packet size on the tested p=
ath
 is REQUIRED. Asymmetrical packet size testing in a two-way architecture is=
 REQUIRED
</span><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;;color:red">for TCP test streams and OPTIONAL for UDP test st=
reams</span><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quo=
t;Courier New&quot;;color:black">.&#8221;</span><span lang=3D"EN-US" style=
=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><o:p></o:p></span=
></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:10.0pt;font-=
family:&quot;Courier New&quot;">&nbsp;<o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Courier New&quot;">BR,</span><span lang=3D"EN-US" style=3D"fon=
t-size:10.0pt;font-family:&quot;Courier New&quot;"><o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Courier New&quot;">Christofer</span><span lang=3D"EN-US" style=
=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><o:p></o:p></span=
></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">&nbsp;</span><span lang=
=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><=
o:p></o:p></span></p>
</div>
<div>
<p class=3D"MsoNormal"><span lang=3D"EN-US" style=3D"font-size:11.0pt;font-=
family:&quot;Calibri&quot;,&quot;sans-serif&quot;">&nbsp;</span><span lang=
=3D"EN-US" style=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><=
o:p></o:p></span></p>
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From: Joachim Fabini <Joachim.Fabini@tuwien.ac.at>
Date: Thu, 12 Jun 2014 17:11:19 +0200
To: Christofer Flinta <christofer.flinta@ericsson.com>
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Subject: Re: [ippm] WGLC for draft-ietf-ippm-rate-problem-05
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Hi Christofer,
I'd rather stay with the current wording and requirement. Main app-layer pro=
tocols (sip, H.323, etc) are prepared to handle asymmetric streams (i.e. dis=
tinct codecs for forward and backward path) on top of UDP. We have asymmetri=
c networks in the access and I can envision many scenarios which require asy=
mmetry for UDP, too (unidirectional video streaming with some RTCP feedback,=
 video-on-demand with feedback channel, asymmetric video with high res in do=
wnlink and low res in uplink, even CBR voice with distinct codecs in uplink a=
nd downlink might become reality sooner than expected with upcoming VoLTE).=20=

So I'd favour to extend and be more specific with respect to the text which d=
iscusses use cases, but leave the requirement as-is.=20
regards Joachim

> Am 12.06.2014 um 16:00 schrieb Christofer Flinta <christofer.flinta@ericss=
on.com>:
>=20
> Hi IPPM group,
> =20
> I have a comment on the rate-problem draft.
> =20
> I fully agree that asymmetrical packet size can be an important feature fo=
r rate measurements. However, I don=E2=80=99t find it necessary to have it m=
andatory for all types of measurements, as specified in section 5:
> =20
> =E2=80=9CThe ability to control packet size on the tested path and enable
>    asymmetrical packet size testing in a two-way architecture are
>    REQUIRED.  This allows both the conventional symmetric packet size
>    testing and asymmetrical packet size testing to employed to solve
>    various aspects of rate measurement: real-time communications often
>    have symmetrical streams, while file transfers have highly
>    asymmetrical streams in the data and acknowledgement traffic
>    directions.=E2=80=9D
> =20
> In this paragraph the requirement on asymmetrical packet size is supported=
 by two examples: real-time communications and file transfer. However, the t=
ext states that real-time communications are often symmetrical, while file t=
ransfer is asymmetrical (because of TCP ACKs). This means that the need for t=
he asymmetrical size is actually mainly for TCP test streams, while most UDP=
 test streams will use symmetrical size.
> =20
> Therefore, I think asymmetrical size should be mandatory only for TCP test=
 streams and optional for UDP test streams. I suggest changing the first par=
t of the paragraph to:
> =20
> =E2=80=9CThe ability to control packet size on the tested path is REQUIRED=
. Asymmetrical packet size testing in a two-way architecture is REQUIRED for=
 TCP test streams and OPTIONAL for UDP test streams.=E2=80=9D
> =20
> BR,
> Christofer
> =20
> =20
> _______________________________________________
> ippm mailing list
> ippm@ietf.org
> https://www.ietf.org/mailman/listinfo/ippm

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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto"><div>Hi Christofer,</div><div>I'd rather st=
ay with the current wording and requirement. Main app-layer protocols (sip, H=
.323, etc) are prepared to handle asymmetric streams (i.e. distinct codecs f=
or forward and backward path) on top of UDP. We have asymmetric networks in t=
he access and I can envision many scenarios which require asymmetry for UDP,=
 too (unidirectional video streaming with some RTCP feedback, video-on-deman=
d with feedback channel, asymmetric video with high res in downlink and low r=
es in uplink, even CBR voice with distinct codecs in uplink and downlink mig=
ht become reality sooner than expected with upcoming VoLTE).&nbsp;</div><div=
>So I'd favour to extend and be more specific with respect to the text which=
 discusses use cases, but leave the requirement as-is.&nbsp;</div><div>regar=
ds Joachim</div><div><br>Am 12.06.2014 um 16:00 schrieb Christofer Flinta &l=
t;<a href=3D"mailto:christofer.flinta@ericsson.com">christofer.flinta@ericss=
on.com</a>&gt;:<br><br></div><blockquote type=3D"cite"><div>

<meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii">=

<meta name=3D"Generator" content=3D"Microsoft Exchange Server">
<!-- converted from rtf -->
<style><!-- .EmailQuote { margin-left: 1pt; padding-left: 4pt; border-left: #=
800000 2px solid; } --></style>


<font face=3D"Courier New" size=3D"2"><span style=3D"font-size:10pt;">
<div><font color=3D"#1F497D">Hi IPPM group,</font></div>
<div><font color=3D"#1F497D">&nbsp;</font></div>
<div><font color=3D"#1F497D">I have a comment on the rate-problem draft.</fo=
nt></div>
<div><font color=3D"#1F497D">&nbsp;</font></div>
<div><font color=3D"#1F497D">I fully agree that asymmetrical packet size can=
 be an important feature for rate measurements. However, I don=E2=80=99t fin=
d it necessary to have it mandatory for all types of measurements, as specif=
ied in section 5:</font></div>
<div><font color=3D"#1F497D">&nbsp;</font></div>
<div><font face=3D"Calibri" color=3D"#1F497D">=E2=80=9C<font face=3D"Courier=
 New" color=3D"black">The ability to control packet size on the tested path a=
nd enable</font></font></div>
<div>&nbsp;&nbsp; asymmetrical packet size testing in a two-way architecture=
 are</div>
<div>&nbsp;&nbsp; REQUIRED.&nbsp; This allows both the conventional symmetri=
c packet size</div>
<div>&nbsp;&nbsp; testing and asymmetrical packet size testing to employed t=
o solve</div>
<div>&nbsp;&nbsp; various aspects of rate measurement: real-time communicati=
ons often</div>
<div>&nbsp;&nbsp; have symmetrical streams, while file transfers have highly=
</div>
<div>&nbsp;&nbsp; asymmetrical streams in the data and acknowledgement traff=
ic</div>
<div>&nbsp;&nbsp; directions.<font face=3D"Calibri" size=3D"2" color=3D"#1F4=
97D"><span style=3D"font-size:11pt;">=E2=80=9D</span></font></div>
<div><font face=3D"Calibri" size=3D"2" color=3D"#1F497D"><span style=3D"font=
-size:11pt;">&nbsp;</span></font></div>
<div><font size=3D"2" color=3D"#1F497D"><span style=3D"font-size:11pt;">In t=
his paragraph the requirement on asymmetrical packet size is supported by tw=
o examples: real-time communications and file transfer. However, the text st=
ates that real-time communications
are often symmetrical, while file transfer is asymmetrical (because of TCP A=
CKs). This means that the need for the asymmetrical size is actually mainly f=
or TCP test streams, while most UDP test streams will use symmetrical size. <=
/span></font></div>
<div><font face=3D"Calibri" size=3D"2" color=3D"#1F497D"><span style=3D"font=
-size:11pt;">&nbsp;</span></font></div>
<div><font size=3D"2" color=3D"#1F497D"><span style=3D"font-size:11pt;">Ther=
efore, I think asymmetrical size should be mandatory only for TCP test strea=
ms and optional for UDP test streams. I suggest changing the first part of t=
he paragraph to:</span></font></div>
<div><font face=3D"Calibri" size=3D"2" color=3D"#1F497D"><span style=3D"font=
-size:11pt;">&nbsp;</span></font></div>
<div><font face=3D"Calibri" color=3D"#1F497D">=E2=80=9C<font face=3D"Courier=
 New" color=3D"black">The ability to control packet size on the tested path i=
s REQUIRED. Asymmetrical packet size testing in a two-way architecture is RE=
QUIRED </font><font face=3D"Courier New" color=3D"red">for
TCP test streams and OPTIONAL for UDP test streams</font><font face=3D"Couri=
er New" color=3D"black">.=E2=80=9D</font></font></div>
<div>&nbsp;</div>
<div><font size=3D"2"><span style=3D"font-size:11pt;">BR,</span></font></div=
>
<div><font size=3D"2"><span style=3D"font-size:11pt;">Christofer</span></fon=
t></div>
<div><font face=3D"Calibri" size=3D"2"><span style=3D"font-size:11pt;">&nbsp=
;</span></font></div>
<div><font face=3D"Calibri" size=3D"2"><span style=3D"font-size:11pt;">&nbsp=
;</span></font></div>
</span></font>


</div></blockquote><blockquote type=3D"cite"><div><span>____________________=
___________________________</span><br><span>ippm mailing list</span><br><spa=
n><a href=3D"mailto:ippm@ietf.org">ippm@ietf.org</a></span><br><span><a href=
=3D"https://www.ietf.org/mailman/listinfo/ippm">https://www.ietf.org/mailman=
/listinfo/ippm</a></span><br></div></blockquote></body></html>=

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From: Steve Baillargeon <steve.baillargeon@ericsson.com>
To: Joachim Fabini <Joachim.Fabini@tuwien.ac.at>, Christofer Flinta <christofer.flinta@ericsson.com>
Thread-Topic: [ippm] WGLC for draft-ietf-ippm-rate-problem-05
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From nobody Thu Jun 12 09:26:20 2014
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From: Greg Mirsky <gregimirsky@gmail.com>
To: "MORTON, ALFRED C (AL)" <acmorton@att.com>
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Subject: Re: [ippm] WGLC for draft-ietf-ippm-rate-problem-05
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Dear Al, et. al,
I support text change proposed by Christofer. I believe it does not limit
anything but allows more flexibility to measurement control protocol.
And I'd remind the WG that we had discussion of this particular requirement
before:

   - http://www.ietf.org/mail-archive/web/ippm/current/msg03130.html;
   <http://www.ietf.org/mail-archive/web/ippm/current/msg03130.html>


   - http://www.ietf.org/mail-archive/web/ippm/current/msg03065.html;

Regards,
Greg


On Thu, Jun 12, 2014 at 7:13 AM, MORTON, ALFRED C (AL) <acmorton@att.com>
wrote:

> Hi Christofer,
>
>
>
> This paragraph and requirement is the result of much discussion and
>
> compromise (already).
>
>
>
> We do not mandate measurements, but for rate measurement we mandate
>
> the capability to control packet sizes including asymmetrical sizes.
>
> There are circumstances where it is valid to test with UDP using
>
> asymmetrical sizes, so we don't want to mix transport layers with
>
> this requirement.
>
>
>
> regards,
>
> Al
>
>
>
> *From:* ippm [mailto:ippm-bounces@ietf.org] *On Behalf Of *Christofer
> Flinta
> *Sent:* Thursday, June 12, 2014 10:00 AM
> *To:* ippm@ietf.org
> *Subject:* [ippm] WGLC for draft-ietf-ippm-rate-problem-05
>
>
>
> Hi IPPM group,
>
>
>
> I have a comment on the rate-problem draft.
>
>
>
> I fully agree that asymmetrical packet size can be an important feature
> for rate measurements. However, I don=E2=80=99t find it necessary to have=
 it
> mandatory for all types of measurements, as specified in section 5:
>
>
>
> =E2=80=9CThe ability to control packet size on the tested path and enable
>
>    asymmetrical packet size testing in a two-way architecture are
>
>    REQUIRED.  This allows both the conventional symmetric packet size
>
>    testing and asymmetrical packet size testing to employed to solve
>
>    various aspects of rate measurement: real-time communications often
>
>    have symmetrical streams, while file transfers have highly
>
>    asymmetrical streams in the data and acknowledgement traffic
>
>    directions.=E2=80=9D
>
>
>
> In this paragraph the requirement on asymmetrical packet size is supporte=
d
> by two examples: real-time communications and file transfer. However, the
> text states that real-time communications are often symmetrical, while fi=
le
> transfer is asymmetrical (because of TCP ACKs). This means that the need
> for the asymmetrical size is actually mainly for TCP test streams, while
> most UDP test streams will use symmetrical size.
>
>
>
> Therefore, I think asymmetrical size should be mandatory only for TCP tes=
t
> streams and optional for UDP test streams. I suggest changing the first
> part of the paragraph to:
>
>
>
> =E2=80=9CThe ability to control packet size on the tested path is REQUIRE=
D.
> Asymmetrical packet size testing in a two-way architecture is REQUIRED fo=
r
> TCP test streams and OPTIONAL for UDP test streams.=E2=80=9D
>
>
>
> BR,
>
> Christofer
>
>
>
>
>
> _______________________________________________
> ippm mailing list
> ippm@ietf.org
> https://www.ietf.org/mailman/listinfo/ippm
>
>

--089e0122a3e216f76f04fba60592
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div><div><div>Dear Al, et. al,<br></div>I support text ch=
ange proposed by Christofer. I believe it does not limit anything but allow=
s more flexibility to measurement control protocol.<br></div>And I&#39;d re=
mind the WG that we had discussion of this particular requirement before:<b=
r>
<ul><li><span style=3D"font-size:11pt;font-family:&quot;Calibri&quot;,&quot=
;sans-serif&quot;"><a href=3D"http://www.ietf.org/mail-archive/web/ippm/cur=
rent/msg03130.html"><span style=3D"color:black"><span style=3D"color:black"=
>http://www.ietf.org/mail-archive/web/ippm/current/msg03130.html;</span></s=
pan></a></span></li>
</ul></div><span style=3D"font-size:11pt;font-family:&quot;Calibri&quot;,&q=
uot;sans-serif&quot;"><span style=3D"color:black"><span style=3D"color:blac=
k"></span></span></span><div><ul><li><span style=3D"font-size:11pt;font-fam=
ily:&quot;Calibri&quot;,&quot;sans-serif&quot;"><a href=3D"http://www.ietf.=
org/mail-archive/web/ippm/current/msg03065.html"><span style=3D"color:black=
"><span style=3D"color:black">http://www.ietf.org/mail-archive/web/ippm/cur=
rent/msg03<span style=3D"color:black">065.html</span></span></span></a>;</s=
pan></li>
</ul></div><div><span style=3D"font-size:11pt;font-family:&quot;Calibri&quo=
t;,&quot;sans-serif&quot;">Regards,<br></span></div><div><span style=3D"fon=
t-size:11pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;">Greg<br=
>
</span></div></div><div class=3D"gmail_extra"><br><br><div class=3D"gmail_q=
uote">On Thu, Jun 12, 2014 at 7:13 AM, MORTON, ALFRED C (AL) <span dir=3D"l=
tr">&lt;<a href=3D"mailto:acmorton@att.com" target=3D"_blank">acmorton@att.=
com</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><div link=3D"blue" vlink=3D"purple" lang=3D"=
EN-US"><div><p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-fam=
ily:&quot;Courier New&quot;">Hi Christofer,<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Co=
urier New&quot;"><u></u>=C2=A0<u></u></span></p><p class=3D"MsoNormal"><spa=
n style=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;">This parag=
raph and requirement is the result of much discussion and<u></u><u></u></sp=
an></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Co=
urier New&quot;">compromise (already). <u></u><u></u></span></p><p class=3D=
"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Courier New&q=
uot;"><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Co=
urier New&quot;">We do not mandate measurements, but for rate measurement w=
e mandate<u></u><u></u></span></p><p class=3D"MsoNormal"><span style=3D"fon=
t-size:10.0pt;font-family:&quot;Courier New&quot;">the capability to contro=
l packet sizes including asymmetrical sizes.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Co=
urier New&quot;">There are circumstances where it is valid to test with UDP=
 using <u></u><u></u></span></p><p class=3D"MsoNormal"><span style=3D"font-=
size:10.0pt;font-family:&quot;Courier New&quot;">asymmetrical sizes, so we =
don&#39;t want to mix transport layers with<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Co=
urier New&quot;">this requirement.<u></u><u></u></span></p><p class=3D"MsoN=
ormal"><span style=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"=
><u></u>=C2=A0<u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Co=
urier New&quot;">regards,<u></u><u></u></span></p><p class=3D"MsoNormal"><s=
pan style=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;">Al<u></u=
><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Co=
urier New&quot;"><u></u>=C2=A0<u></u></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 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;"> ippm [ma=
ilto:<a href=3D"mailto:ippm-bounces@ietf.org" target=3D"_blank">ippm-bounce=
s@ietf.org</a>] <b>On Behalf Of </b>Christofer Flinta<br>
<b>Sent:</b> Thursday, June 12, 2014 10:00 AM<br><b>To:</b> <a href=3D"mail=
to:ippm@ietf.org" target=3D"_blank">ippm@ietf.org</a><br><b>Subject:</b> [i=
ppm] WGLC for draft-ietf-ippm-rate-problem-05<u></u><u></u></span></p></div=
>
</div><div><div class=3D"h5"><p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p=
><div><p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&q=
uot;Courier New&quot;;color:#1f497d">Hi IPPM group,</span><span style=3D"fo=
nt-size:10.0pt;font-family:&quot;Courier New&quot;"><u></u><u></u></span></=
p>
</div><div><p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-fami=
ly:&quot;Courier New&quot;;color:#1f497d">=C2=A0</span><span style=3D"font-=
size:10.0pt;font-family:&quot;Courier New&quot;"><u></u><u></u></span></p><=
/div><div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Co=
urier New&quot;;color:#1f497d">I have a comment on the rate-problem draft.<=
/span><span style=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;">=
<u></u><u></u></span></p>
</div><div><p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-fami=
ly:&quot;Courier New&quot;;color:#1f497d">=C2=A0</span><span style=3D"font-=
size:10.0pt;font-family:&quot;Courier New&quot;"><u></u><u></u></span></p><=
/div><div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Co=
urier New&quot;;color:#1f497d">I fully agree that asymmetrical packet size =
can be an important feature for rate measurements. However, I don=E2=80=99t=
 find it necessary to have it mandatory for all types of measurements, as s=
pecified in section 5:</span><span style=3D"font-size:10.0pt;font-family:&q=
uot;Courier New&quot;"><u></u><u></u></span></p>
</div><div><p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-fami=
ly:&quot;Courier New&quot;;color:#1f497d">=C2=A0</span><span style=3D"font-=
size:10.0pt;font-family:&quot;Courier New&quot;"><u></u><u></u></span></p><=
/div><div>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-family:&quot;Ca=
libri&quot;,&quot;sans-serif&quot;;color:#1f497d">=E2=80=9C</span><span sty=
le=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;;color:black">The=
 ability to control packet size on the tested path and enable</span><span s=
tyle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><u></u><u></u=
></span></p>
</div><div><p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-fami=
ly:&quot;Courier New&quot;">=C2=A0=C2=A0 asymmetrical packet size testing i=
n a two-way architecture are<u></u><u></u></span></p></div><div><p class=3D=
"MsoNormal">
<span style=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;">=C2=A0=
=C2=A0 REQUIRED.=C2=A0 This allows both the conventional symmetric packet s=
ize<u></u><u></u></span></p></div><div><p class=3D"MsoNormal"><span style=
=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;">=C2=A0=C2=A0 test=
ing and asymmetrical packet size testing to employed to solve<u></u><u></u>=
</span></p>
</div><div><p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-fami=
ly:&quot;Courier New&quot;">=C2=A0=C2=A0 various aspects of rate measuremen=
t: real-time communications often<u></u><u></u></span></p></div><div><p cla=
ss=3D"MsoNormal">
<span style=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;">=C2=A0=
=C2=A0 have symmetrical streams, while file transfers have highly<u></u><u>=
</u></span></p></div><div><p class=3D"MsoNormal"><span style=3D"font-size:1=
0.0pt;font-family:&quot;Courier New&quot;">=C2=A0=C2=A0 asymmetrical stream=
s in the data and acknowledgement traffic<u></u><u></u></span></p>
</div><div><p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-fami=
ly:&quot;Courier New&quot;">=C2=A0=C2=A0 directions.</span><span style=3D"f=
ont-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;colo=
r:#1f497d">=E2=80=9D</span><span style=3D"font-size:10.0pt;font-family:&quo=
t;Courier New&quot;"><u></u><u></u></span></p>
</div><div><p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-fami=
ly:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">=C2=A0</span><=
span style=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><u></u>=
<u></u></span></p>
</div><div><p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-fami=
ly:&quot;Courier New&quot;;color:#1f497d">In this paragraph the requirement=
 on asymmetrical packet size is supported by two examples: real-time commun=
ications and file transfer. However, the text states that real-time communi=
cations are often symmetrical, while file transfer is asymmetrical (because=
 of TCP ACKs). This means that the need for the asymmetrical size is actual=
ly mainly for TCP test streams, while most UDP test streams will use symmet=
rical size. </span><span style=3D"font-size:10.0pt;font-family:&quot;Courie=
r New&quot;"><u></u><u></u></span></p>
</div><div><p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-fami=
ly:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">=C2=A0</span><=
span style=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><u></u>=
<u></u></span></p>
</div><div><p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-fami=
ly:&quot;Courier New&quot;;color:#1f497d">Therefore, I think asymmetrical s=
ize should be mandatory only for TCP test streams and optional for UDP test=
 streams. I suggest changing the first part of the paragraph to:</span><spa=
n style=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><u></u><u>=
</u></span></p>
</div><div><p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-fami=
ly:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">=C2=A0</span><=
span style=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;"><u></u>=
<u></u></span></p>
</div><div><p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-fami=
ly:&quot;Calibri&quot;,&quot;sans-serif&quot;;color:#1f497d">=E2=80=9C</spa=
n><span style=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;;color=
:black">The ability to control packet size on the tested path is REQUIRED. =
Asymmetrical packet size testing in a two-way architecture is REQUIRED </sp=
an><span style=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;;colo=
r:red">for TCP test streams and OPTIONAL for UDP test streams</span><span s=
tyle=3D"font-size:10.0pt;font-family:&quot;Courier New&quot;;color:black">.=
=E2=80=9D</span><span style=3D"font-size:10.0pt;font-family:&quot;Courier N=
ew&quot;"><u></u><u></u></span></p>
</div><div><p class=3D"MsoNormal"><span style=3D"font-size:10.0pt;font-fami=
ly:&quot;Courier New&quot;">=C2=A0<u></u><u></u></span></p></div><div><p cl=
ass=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-family:&quot;Courier=
 New&quot;">BR,</span><span style=3D"font-size:10.0pt;font-family:&quot;Cou=
rier New&quot;"><u></u><u></u></span></p>
</div><div><p class=3D"MsoNormal"><span style=3D"font-size:11.0pt;font-fami=
ly:&quot;Courier New&quot;">Christofer</span><span style=3D"font-size:10.0p=
t;font-family:&quot;Courier New&quot;"><u></u><u></u></span></p></div><div>=
<p class=3D"MsoNormal">
<span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;sans-=
serif&quot;">=C2=A0</span><span style=3D"font-size:10.0pt;font-family:&quot=
;Courier New&quot;"><u></u><u></u></span></p></div><div><p class=3D"MsoNorm=
al"><span style=3D"font-size:11.0pt;font-family:&quot;Calibri&quot;,&quot;s=
ans-serif&quot;">=C2=A0</span><span style=3D"font-size:10.0pt;font-family:&=
quot;Courier New&quot;"><u></u><u></u></span></p>
</div></div></div></div></div></div><br>___________________________________=
____________<br>
ippm mailing list<br>
<a href=3D"mailto:ippm@ietf.org">ippm@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/ippm" target=3D"_blank">ht=
tps://www.ietf.org/mailman/listinfo/ippm</a><br>
<br></blockquote></div><br></div>

--089e0122a3e216f76f04fba60592--


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Subject: Re: [ippm] WGLC for draft-ietf-ippm-rate-problem-05
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Hi Steve,

my "asymmetric streams" should read as "streams with asymmetric packet
sizes in a two-way architecture". Please correct me if I'm wrong: my
understanding of Christopher's proposal is that streams in the forward
path which trigger streams of distinct packet size in the reverse path
should be optional.
The targeted measurement methodology/process appears to share some main
traits with some earlier, rather theoretical work I've done in another
context [1]. Therein, as part of a feasibility study, we also change
characteristics of forward link measurement streams in the reflecting
node to infer on accurate forward and reverse link one-way delay.
Seconded by findings in the 2330-update draft (in particular when
thinking of  distinct reactive/on-demand capacity allocation policies of
forward/reverse measurement path) the ability to trigger distinct packet
sizes in a two-way architecture's reverse link (for UDP) seems to me to
make sufficient sense to justify more than an "Optional".

[1]: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6553584

br
Joachim

On 12.06.2014 18:08, Steve Baillargeon wrote:
> Hi Joachim
> Christofer did not say asymmetry is not needed. He is saying that both asymmetry and symmetry are valid use cases for active and passive bitrate measurements in two-way architecture. I prefer we use the new proposed text since it satisfies all.
> 
> -Steve
> 
> 
> From: ippm [mailto:ippm-bounces@ietf.org] On Behalf Of Joachim Fabini
> Sent: June-12-14 11:11 AM
> To: Christofer Flinta
> Cc: ippm@ietf.org
> Subject: Re: [ippm] WGLC for draft-ietf-ippm-rate-problem-05
> 
> Hi Christofer,
> I'd rather stay with the current wording and requirement. Main app-layer protocols (sip, H.323, etc) are prepared to handle asymmetric streams (i.e. distinct codecs for forward and backward path) on top of UDP. We have asymmetric networks in the access and I can envision many scenarios which require asymmetry for UDP, too (unidirectional video streaming with some RTCP feedback, video-on-demand with feedback channel, asymmetric video with high res in downlink and low res in uplink, even CBR voice with distinct codecs in uplink and downlink might become reality sooner than expected with upcoming VoLTE).
> So I'd favour to extend and be more specific with respect to the text which discusses use cases, but leave the requirement as-is.
> regards Joachim
> 
> Am 12.06.2014 um 16:00 schrieb Christofer Flinta <christofer.flinta@ericsson.com<mailto:christofer.flinta@ericsson.com>>:
> Hi IPPM group,
> 
> I have a comment on the rate-problem draft.
> 
> I fully agree that asymmetrical packet size can be an important feature for rate measurements. However, I don’t find it necessary to have it mandatory for all types of measurements, as specified in section 5:
> 
> “The ability to control packet size on the tested path and enable
>    asymmetrical packet size testing in a two-way architecture are
>    REQUIRED.  This allows both the conventional symmetric packet size
>    testing and asymmetrical packet size testing to employed to solve
>    various aspects of rate measurement: real-time communications often
>    have symmetrical streams, while file transfers have highly
>    asymmetrical streams in the data and acknowledgement traffic
>    directions.”
> 
> In this paragraph the requirement on asymmetrical packet size is supported by two examples: real-time communications and file transfer. However, the text states that real-time communications are often symmetrical, while file transfer is asymmetrical (because of TCP ACKs). This means that the need for the asymmetrical size is actually mainly for TCP test streams, while most UDP test streams will use symmetrical size.
> 
> Therefore, I think asymmetrical size should be mandatory only for TCP test streams and optional for UDP test streams. I suggest changing the first part of the paragraph to:
> 
> “The ability to control packet size on the tested path is REQUIRED. Asymmetrical packet size testing in a two-way architecture is REQUIRED for TCP test streams and OPTIONAL for UDP test streams.”
> 
> BR,
> Christofer
> 
> 
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From nobody Thu Jun 12 15:12:20 2014
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From: Steve Baillargeon <steve.baillargeon@ericsson.com>
To: Joachim Fabini <Joachim.Fabini@tuwien.ac.at>, Christofer Flinta <christofer.flinta@ericsson.com>
Thread-Topic: [ippm] WGLC for draft-ietf-ippm-rate-problem-05
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Subject: Re: [ippm] WGLC for draft-ietf-ippm-rate-problem-05
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To: Steve Baillargeon <steve.baillargeon@ericsson.com>, Christofer Flinta <christofer.flinta@ericsson.com>
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Subject: Re: [ippm] WGLC for draft-ietf-ippm-rate-problem-05
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Hi Steve,

RECOMMENDED for UDP might be one way to go. However, if the rate-problem
draft becomes a RFC, it will be a feature that two-way measurement tools
may implement - as an _option_. In my opinion, asymmetric packet size
for two-way measurements is one of the main contributions of the
rate-problem draft and that justifies a REQUIRED.

Treating UDP and TCP differently with respect to forward and reverse
link packet size would make sense for me - if we know that there is no
use case for UDP. But imho there must be objective arguments why we
_discriminate_ (or privilege) one transport protocol over the other and
_not_ why we treat it in a generic way.
My personal preference for standardization would be to develop generic
solutions, advocate equal protocol treatment - unless there are good
reasons to discriminate one. I don't see such a reason for this specific
case.

I mentioned in my earlier postings some use cases for UDP, which I
believe to be realistic or become real in the next years. And,
continuing rather theoretical about transport protocol evolution:
Half-connections in DCCP target exactly the same communication pattern
which we experience for TCP. Data flow plus control flow is going in one
direction, control flow in the reverse link. This ends up in distinct
packet sizes for forward and reverse link. One can dispute about the
success of DCCP, but I like the design of the protocol as such, it has a
strong theoretical background, including requirements engineering.

To summarize my arguments: imho we should try to go the generic way
unless we have very good reasons _not_ to do so. And reactive link
behavior, combined with asymmetrical uplink/downlink like we find, e.g.,
in today's mobile cellular networks, is imho a _strong_ reason to have
REQUIRED for distinct forward/reverse link packet sizes for all
transport protocols - including UDP (*).

br
Joachim
(*) My experience is that we can trigger state changes and specific
reactive link conditions/transitions (in the context of explorative
measurements) with UDP (or ICMP) much more deterministic than we can do
with TCP.


On 13.06.2014 00:12, Steve Baillargeon wrote:
> Hi Joachim
> RECOMMENDED is probably a better way to go. 
> With various Internet traffic mix, we have test results that show forward and reverse available (raw) capacities (with different loading and/or link speed and/or shaping conditions) can be estimated with a single two-way test stream  using the same test packet size (assuming the packet size does not cause fragmentation). 
> 
> I am OK with the following statement (as suggested by Christofer): The ability to control packet size on the tested path is REQUIRED. 
> 
> I still think the following statement is incomplete or misleading: Asymmetrical packet size testing in a two-way architecture is REQUIRED.
> 
> As a minimum, should it better explain when and why asymmetrical packet size testing is REQUIRED?
> 
> -Steve
> 
> 
> 
> -----Original Message-----
> From: Joachim Fabini [mailto:Joachim.Fabini@tuwien.ac.at] 
> Sent: June-12-14 3:47 PM
> To: Steve Baillargeon; Christofer Flinta
> Cc: ippm@ietf.org
> Subject: Re: [ippm] WGLC for draft-ietf-ippm-rate-problem-05
> 
> Hi Steve,
> 
> my "asymmetric streams" should read as "streams with asymmetric packet sizes in a two-way architecture". Please correct me if I'm wrong: my understanding of Christopher's proposal is that streams in the forward path which trigger streams of distinct packet size in the reverse path should be optional.
> The targeted measurement methodology/process appears to share some main traits with some earlier, rather theoretical work I've done in another context [1]. Therein, as part of a feasibility study, we also change characteristics of forward link measurement streams in the reflecting node to infer on accurate forward and reverse link one-way delay.
> Seconded by findings in the 2330-update draft (in particular when thinking of  distinct reactive/on-demand capacity allocation policies of forward/reverse measurement path) the ability to trigger distinct packet sizes in a two-way architecture's reverse link (for UDP) seems to me to make sufficient sense to justify more than an "Optional".
> 
> [1]: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6553584
> 
> br
> Joachim
> 
> On 12.06.2014 18:08, Steve Baillargeon wrote:
>> Hi Joachim
>> Christofer did not say asymmetry is not needed. He is saying that both asymmetry and symmetry are valid use cases for active and passive bitrate measurements in two-way architecture. I prefer we use the new proposed text since it satisfies all.
>>
>> -Steve
>>
>>
>> From: ippm [mailto:ippm-bounces@ietf.org] On Behalf Of Joachim Fabini
>> Sent: June-12-14 11:11 AM
>> To: Christofer Flinta
>> Cc: ippm@ietf.org
>> Subject: Re: [ippm] WGLC for draft-ietf-ippm-rate-problem-05
>>
>> Hi Christofer,
>> I'd rather stay with the current wording and requirement. Main app-layer protocols (sip, H.323, etc) are prepared to handle asymmetric streams (i.e. distinct codecs for forward and backward path) on top of UDP. We have asymmetric networks in the access and I can envision many scenarios which require asymmetry for UDP, too (unidirectional video streaming with some RTCP feedback, video-on-demand with feedback channel, asymmetric video with high res in downlink and low res in uplink, even CBR voice with distinct codecs in uplink and downlink might become reality sooner than expected with upcoming VoLTE).
>> So I'd favour to extend and be more specific with respect to the text which discusses use cases, but leave the requirement as-is.
>> regards Joachim
>>
>> Am 12.06.2014 um 16:00 schrieb Christofer Flinta <christofer.flinta@ericsson.com<mailto:christofer.flinta@ericsson.com>>:
>> Hi IPPM group,
>>
>> I have a comment on the rate-problem draft.
>>
>> I fully agree that asymmetrical packet size can be an important feature for rate measurements. However, I don’t find it necessary to have it mandatory for all types of measurements, as specified in section 5:
>>
>> “The ability to control packet size on the tested path and enable
>>    asymmetrical packet size testing in a two-way architecture are
>>    REQUIRED.  This allows both the conventional symmetric packet size
>>    testing and asymmetrical packet size testing to employed to solve
>>    various aspects of rate measurement: real-time communications often
>>    have symmetrical streams, while file transfers have highly
>>    asymmetrical streams in the data and acknowledgement traffic
>>    directions.”
>>
>> In this paragraph the requirement on asymmetrical packet size is supported by two examples: real-time communications and file transfer. However, the text states that real-time communications are often symmetrical, while file transfer is asymmetrical (because of TCP ACKs). This means that the need for the asymmetrical size is actually mainly for TCP test streams, while most UDP test streams will use symmetrical size.
>>
>> Therefore, I think asymmetrical size should be mandatory only for TCP test streams and optional for UDP test streams. I suggest changing the first part of the paragraph to:
>>
>> “The ability to control packet size on the tested path is REQUIRED. Asymmetrical packet size testing in a two-way architecture is REQUIRED for TCP test streams and OPTIONAL for UDP test streams.”
>>
>> BR,
>> Christofer
>>
>>
>> _______________________________________________
>> ippm mailing list
>> ippm@ietf.org<mailto:ippm@ietf.org>
>> https://www.ietf.org/mailman/listinfo/ippm
>>
> 
> 


From nobody Thu Jun 19 08:23:59 2014
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Subject: [ippm] I-D Action: draft-ietf-ippm-lmap-path-04.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 IP Performance Metrics Working Group of the IETF.

        Title           : A Reference Path and Measurement Points for LMAP
        Authors         : Marcelo Bagnulo
                          Trevor Burbridge
                          Sam Crawford
                          Phil Eardley
                          Al Morton
	Filename        : draft-ietf-ippm-lmap-path-04.txt
	Pages           : 14
	Date            : 2014-06-19

Abstract:
   This document defines a reference path for Large-scale Measurement of
   Broadband Access Performance (LMAP) and measurement points for
   commonly used performance metrics.  The methods for measurement point
   location may be applicable to similar measurement projects using the
   extensions described here.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-ippm-lmap-path/

There's also a htmlized version available at:
http://tools.ietf.org/html/draft-ietf-ippm-lmap-path-04

A diff from the previous version is available at:
http://www.ietf.org/rfcdiff?url2=draft-ietf-ippm-lmap-path-04


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From nobody Thu Jun 19 09:20:42 2014
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From: "MORTON, ALFRED C (AL)" <acmorton@att.com>
To: "ippm@ietf.org" <ippm@ietf.org>
Date: Thu, 19 Jun 2014 12:20:37 -0400
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This version addresses the comments received=20
on and off list, and fixes a nits-checker error
that emerged with the new text in 03 (2119 key words
had not been used before that version,=20
so there was no ref or boilerplate).

> -----Original Message-----
> From: I-D-Announce [mailto:i-d-announce-bounces@ietf.org] On Behalf Of
> internet-drafts@ietf.org
> Sent: Thursday, June 19, 2014 11:24 AM
> To: i-d-announce@ietf.org
> Cc: ippm@ietf.org
> Subject: I-D Action: draft-ietf-ippm-lmap-path-04.txt
>=20
>=20
> A New Internet-Draft is available from the on-line Internet-Drafts
> directories.
>  This draft is a work item of the IP Performance Metrics Working Group of
> the IETF.
>=20
>         Title           : A Reference Path and Measurement Points for LMA=
P
>         Authors         : Marcelo Bagnulo
>                           Trevor Burbridge
>                           Sam Crawford
>                           Phil Eardley
>                           Al Morton
> 	Filename        : draft-ietf-ippm-lmap-path-04.txt
> 	Pages           : 14
> 	Date            : 2014-06-19
>=20
> Abstract:
>    This document defines a reference path for Large-scale Measurement of
>    Broadband Access Performance (LMAP) and measurement points for
>    commonly used performance metrics.  The methods for measurement point
>    location may be applicable to similar measurement projects using the
>    extensions described here.
>=20
>=20
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-ippm-lmap-path/
>=20
> There's also a htmlized version available at:
> http://tools.ietf.org/html/draft-ietf-ippm-lmap-path-04
>=20
> A diff from the previous version is available at:
> http://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-ippm-lmap-path-04
>=20
>=20
> Please note that it may take a couple of minutes from the time of
> submission
> until the htmlized version and diff are available at tools.ietf.org.
>=20
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
>=20
> _______________________________________________
> I-D-Announce mailing list
> I-D-Announce@ietf.org
> https://www.ietf.org/mailman/listinfo/i-d-announce
> Internet-Draft directories: http://www.ietf.org/shadow.html
> or ftp://ftp.ietf.org/ietf/1shadow-sites.txt


From nobody Tue Jun 24 07:17:23 2014
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From: Brian Trammell <ietf@trammell.ch>
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Subject: [ippm] Calls for adoption as WG items
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Greetings, IPPM,

This is a call for adoption for four new milestones under the current =
IPPM charter.

(1) Submit a draft updating RFC2679 based on testing and implementation=20=

    experience (RFC 6808) to the IESG as Proposed Standard
  (under consideration for this milestone is =
draft-morton-ippm-2679-bis-04)

(2) Submit a draft updating RFC2680 based on testing and implementation=20=

    experience (draft-ietf-ippm-testplan-rfc2680-05) to the IESG as=20
    Proposed Standard
  (under consideration for this milestone is =
draft-morton-ippm-2679-bis-04)

(3) Submit a draft adding DSCP and ECN monitoring to TWAMP to the=20
    IESG as Proposed Standard
  (under consideration for this milestone is =
draft-hedin-ippm-type-p-monitor-03)

(4) Submit a draft adding a UDP Checksum Trailer to OWAMP and TWAMP to =
the IESG=20
    as Informational
  (under consideration for this milestone is =
draft-mizrahi-ippm-checksum-trailer-00)

For each draft, please indicate the following to the list at =
ippm@ietf.org

(a) whether you support the addition of the milestone and the adoption =
of the draft as a WG item to fulfill that milestone
(b) whether you have read the draft
(c) whether you pledge to review the draft during the WG process.

This call for adoption will last until Thursday 10 July 2014.

Many thanks, best regards,

Brian

On 02 Jun 2014, at 18:07, Brian Trammell <ietf@trammell.ch> wrote:

> Greetings, IPPM,
>=20
> Thanks and congratulations to the authors on the approval of our first =
draft from the "new" (March 2013) charter!
>=20
> As we're moving forward in our charter, it's time to consider adopting =
new drafts.
>=20
> I've seen implicit requests for a call for adoption for the following =
two drafts, which were not adopted in Orlando because we wanted to see =
if 2330-update would change their scope significantly:
>=20
> draft-morton-ippm-2679-bis-04
> draft-morton-ippm-2680-bis-02
>=20
> We have at least one explicit request for a call for adoption:
>=20
> draft-hedin-ippm-type-p-monitor-03
>=20
> If there are other documents which you would like to have considered =
for adoption as IPPM WG items in the next round under the present =
charter, please notify the chairs at ippm-chairs@tools.ietf.org by =
Friday, June 6th; we'll run the call for adoption after that.
>=20
> Thanks, cheers,
>=20
> Brian (as chair)
>=20
>=20
> Begin forwarded message:
>=20
>> From: The IESG <iesg-secretary@ietf.org>
>> Subject: Document Action: 'Advanced Stream and Sampling Framework for =
IPPM' to Informational RFC (draft-ietf-ippm-2330-update-05.txt)
>> Date: 29 May 2014 21:41:55 GMT+2
>> Resent-To: bill@wjcerveny.com, ietf@trammell.ch,
>> To: IETF-Announce <ietf-announce@ietf.org>
>> Cc: RFC Editor <rfc-editor@rfc-editor.org>, ippm mailing list =
<ippm@ietf.org>, ippm chair <ippm-chairs@tools.ietf.org>
>>=20
>> The IESG has approved the following document:
>> - 'Advanced Stream and Sampling Framework for IPPM'
>> (draft-ietf-ippm-2330-update-05.txt) as Informational RFC
>>=20
>> This document is the product of the IP Performance Metrics Working =
Group.
>>=20
>> The IESG contact persons are Spencer Dawkins and Martin Stiemerling.
>>=20
>> A URL of this Internet Draft is:
>> http://datatracker.ietf.org/doc/draft-ietf-ippm-2330-update/
>>=20
>>=20
>>=20
>>=20
>>=20
>> Technical Summary
>>=20
>>  To obtain repeatable results in modern networks, test descriptions=20=

>>  need an expanded stream parameter framework that also augments=20
>>  aspects specified as Type-P for test packets.  This memo updates
>>  the IP Performance Metrics (IPPM) Framework, RFC 2330, with=20
>>  advanced considerations for measurement methodology and testing. =20
>>  The existing framework mostly assumes deterministic connectivity,=20
>>  and that a single test stream will represent the characteristics of =
the=20
>>  path when it is aggregated with other flows.  Networks have evolved=20=

>>  and test stream descriptions must evolve with them, otherwise=20
>>  unexpected network features may dominate the measured performance. =20=

>>  This memo describes new stream parameters for both network=20
>>  characterization and support of application design using IPPM =
metrics.
>>=20
>> Working Group Summary
>>=20
>>  This draft was first introduced to the working group in October =
2012.=20
>>  Support for the draft was indicated at meetings with no dissent.
>>=20
>> Document Quality
>>=20
>>  As an update to the IPPM Framework, this document adds=20
>>  new and updated considerations for stream parameters.
>>=20
>>  The document shepherd reviewed the document as a =93-02=94=20
>>  draft and reviewed the changes which constitute =93-03=94 and =93-04=94=
.
>>=20
>>  As documented, other topics in the IPPM Framework which=20
>>  might be updated or augmented are deferred to future work.  This=20
>>  includes the topics of passive and various forms of of hybrid=20
>>  active/passive measurements.
>>=20
>> Personnel
>>=20
>>  The document shepherd was Bill Cerveny. The responsible=20
>>  area director is Spencer Dawkins.
>=20
> _______________________________________________
> ippm mailing list
> ippm@ietf.org
> https://www.ietf.org/mailman/listinfo/ippm


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From nobody Tue Jun 24 08:10:26 2014
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Subject: [ippm] WGLC on draft-ietf-ippm-ipsec-03
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Greetings, all,

This message begins WGLC on draft-ietf-ippm-ipsec-03. Please send any =
comments to the list (including simply "I've read the draft and support =
publication") by the end of day Tuesday 8 July 2014.

Thanks, cheers,

Brian

Begin forwarded message:

> From: Kostas Pentikousis <k.pentikousis@eict.de>
> Subject: [ippm] WG: New Version Notification for =
draft-ietf-ippm-ipsec-03.txt
> Date: 5 Jun 2014 14:01:50 GMT+2
> To: "ippm@ietf.org" <ippm@ietf.org>, "ipsec@ietf.org" <ipsec@ietf.org>
>=20
> Dear all,
>=20
> We have updated the draft on "Network Performance Measurement for =
IPsec" (see below). We would greatly appreciate comments from both IPPM =
and IPSEC as we're heading to finalizing this work item in IPPM.
>=20
> Best regards,
>=20
> Kostas
>=20
>=20
> -----Urspr=FCngliche Nachricht-----
> Von: internet-drafts@ietf.org [mailto:internet-drafts@ietf.org]=20
> Gesendet: Donnerstag, 5. Juni 2014 13:56
> An: Yang Cui; Emma Zhang; Emma Zhang; Yang Cui; Kostas Pentikousis; =
Kostas Pentikousis
> Betreff: New Version Notification for draft-ietf-ippm-ipsec-03.txt
>=20
>=20
> A new version of I-D, draft-ietf-ippm-ipsec-03.txt has been =
successfully submitted by Kostas Pentikousis and posted to the IETF =
repository.
>=20
> Name:		draft-ietf-ippm-ipsec
> Revision:	03
> Title:		Network Performance Measurement for IPsec
> Document date:	2014-06-05
> Group:		ippm
> Pages:		12
> URL:            =
http://www.ietf.org/internet-drafts/draft-ietf-ippm-ipsec-03.txt
> Status:         =
https://datatracker.ietf.org/doc/draft-ietf-ippm-ipsec/
> Htmlized:       http://tools.ietf.org/html/draft-ietf-ippm-ipsec-03
> Diff:           =
http://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-ippm-ipsec-03
>=20
> Abstract:
>   The O/TWAMP security mechanism requires that both the client and
>   server endpoints possess a shared secret.  Since the currently-
>   standardized O/TWAMP security mechanism only supports a pre-shared
>   key mode, large scale deployment of O/TWAMP is hindered
>   significantly.  At the same time, recent trends point to wider IKEv2
>   deployment which, in turn, calls for mechanisms and methods that
>   enable tunnel end-users, as well as operators, to measure one-way =
and
>   two-way network performance in a standardized manner.  This document
>   discusses the use of keys derived from an IKEv2 SA as the shared key
>   in O/TWAMP.  If the shared key can be derived from the IKEv2 SA, O/
>   TWAMP can support certificate-based key exchange, which would allow
>   for more operational flexibility and efficiency.  The key derivation
>   presented in this document can also facilitate automatic key
>   management.
>=20
>=20
>=20
>=20
> Please note that it may take a couple of minutes from the time of =
submission until the htmlized version and diff are available at =
tools.ietf.org.
>=20
> The IETF Secretariat
>=20
> _______________________________________________
> ippm mailing list
> ippm@ietf.org
> https://www.ietf.org/mailman/listinfo/ippm


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From nobody Tue Jun 24 13:23:43 2014
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Greetings, all,

According to the tentative agenda (subject to change), we'll have a two =
hour slot in Toronto, 16:40-18:40 EDT on Tuesday 22 July.

I expect we'll have presentations from all present working group =
documents with not yet in LC or with LC unfinished before the Toronto =
document deadline; these will be:

draft-ietf-ippm-ipsec-03 (currently in WGLC)
draft-ietf-ippm-model-based-metrics-02 (if updated before the meeting)
draft-ietf-ippm-registry (as yet unsubmitted)
draft-ietf-ippm-registry-active-00
draft-ietf-ippm-registry-passive-00

The following drafts will have completed call for adoption, but will not =
have been updated before the meeting with respect to the outcome of =
those calls for adoption; I expect we'll have a slot for each of these, =
too, to continue any discussion arising from the call for adoption:

draft-morton-ippm-2679-bis-04
draft-morton-ippm-2680-bis-02
draft-hedin-ippm-type-p-monitor-03
draft-mizrahi-ippm-checksum-trailer-00

The following draft has been updated since London, and follow from =
topics previously discussed in the WG, so I'd expect a presentation from =
the authors of this draft as well:

draft-zheng-ippm-framework-passive-00

Please send any other requests for slots to the =
ippm-chairs@tools.ietf.org by Tuesday 1 July.

Thanks, cheers,

Brian (as chair)

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From nobody Tue Jun 24 14:22:01 2014
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Subject: [ippm] Reactive behavior is deterministic?
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Section 1.1 of draft-ietf-ippm-2330-update-05.txt uses the word
deterministic in the definition of "reactive behavior".   Is the accurate
for technologies in question?   I am under the impression that both LTE
channel switching and Comcast powerboost have at least some component of
their behaviors that depend on network load.  This would make some details
of these technologies "nondeterministic" relative to test traffic that was
uninformed about network state.

Furthermore, I argue most places where reactive networks are used, the
optimal design embodies load sensitive adaptation, so this is probably the
common case, not the exception.

I'm not sure I even know why there is a "deterministic" assumption.  Does
it matter elsewhere.

Thanks,
--MM--
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<div dir=3D"ltr">Section 1.1 of=C2=A0draft-ietf-ippm-2330-update-05.txt use=
s the word deterministic in the definition of &quot;reactive behavior&quot;=
. =C2=A0 Is the accurate for technologies in question? =C2=A0 I am under th=
e impression that both LTE channel switching and Comcast powerboost have at=
 least some component of their behaviors that depend on network load. =C2=
=A0This would make some details of these technologies &quot;nondeterministi=
c&quot; relative to test traffic that was uninformed about network state.<d=
iv>
<br></div><div>Furthermore, I argue most places where reactive networks are=
 used, the optimal design embodies load sensitive adaptation, so this is pr=
obably the common case, not the exception.</div><div><br></div><div>I&#39;m=
 not sure I even know why there is a &quot;deterministic&quot; assumption. =
=C2=A0Does it matter elsewhere.</div>
<div><br></div><div><div><div><div dir=3D"ltr"><div>Thanks,</div>--MM--<br>=
The best way to predict the future is to create it. =C2=A0- Alan Kay<br><br=
>Privacy matters! =C2=A0We know from recent events that people are using ou=
r services to speak in defiance of unjust governments. =C2=A0 We treat priv=
acy and security as matters of life and death, because for some users, they=
 are.</div>
</div>
</div></div></div>

--047d7b2e7724ea89da04fc9b6570--


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--461871616-978520638-1403648851=:57463
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Guys,=0A=0AWe have posted a new version of our Passive Framework draft. =A0=
 Please take a look and give us comments!=A0=0A=A0=0AThanks so much.=0A=0AN=
alini Elkins=0AInside Products, Inc.=0A(831) 659-8360=0Awww.insidethestack.=
com=0A=0A=0A----- Forwarded Message -----=0AFrom: "internet-drafts@ietf.org=
" <internet-drafts@ietf.org>=0ATo: Greg Mirsky <gregory.mirsky@ericsson.com=
>; Nalini Elkins <nalini.elkins@insidethestack.com>; Lianshu Zheng <vero.zh=
eng@huawei.com>; Nalini Elkins <nalini.elkins@insidethestack.com>; Greg Mir=
sky <gregory.mirsky@ericsson.com>; Deng Lingli <denglingli@chinamobile.com>=
; Michael Ackermann <mike.ackermann@bcbsmi.com>; Michael Ackermann <mike.ac=
kermann@bcbsmi.com>; Lingli Deng <denglingli@chinamobile.com>; Lianshu Zhen=
g <vero.zheng@huawei.com> =0ASent: Tuesday, June 24, 2014 3:26 PM=0ASubject=
: New Version Notification for draft-zheng-ippm-framework-passive-01.txt=0A=
 =0A=0A=0AA new version of I-D, draft-zheng-ippm-framework-passive-01.txt=
=0Ahas been successfully submitted by Nalini Elkins and posted to the=0AIET=
F repository.=0A=0AName:=A0=A0=A0 =A0=A0=A0 draft-zheng-ippm-framework-pass=
ive=0ARevision:=A0=A0=A0 01=0ATitle:=A0=A0=A0 =A0=A0=A0 Framework for IP Pa=
ssive Performance Measurements=0ADocument date:=A0=A0=A0 2014-06-24=0AGroup=
:=A0=A0=A0 =A0=A0=A0 Individual Submission=0APages:=A0=A0=A0 =A0=A0=A0 13=
=0AURL:=A0 =A0 =A0 =A0 =A0 =A0 http://www.ietf.org/internet-drafts/draft-zh=
eng-ippm-framework-passive-01.txt=0AStatus:=A0 =A0 =A0 =A0 https://datatrac=
ker.ietf.org/doc/draft-zheng-ippm-framework-passive/=0AHtmlized:=A0 =A0 =A0=
 http://tools.ietf.org/html/draft-zheng-ippm-framework-passive-01=0ADiff:=
=A0 =A0 =A0 =A0 =A0 http://www.ietf.org/rfcdiff?url2=3Ddraft-zheng-ippm-fra=
mework-passive-01=0A=0AAbstract:=0A=A0  This document describes the framewo=
rk for passive measurement. In=0A=A0  particular, the differences between p=
assive and active measurements=0A=A0  are analyzed, general considerations =
for both metric definition and=0A=A0  measurement methodology are discussed=
, and requirements for various=0A=A0  entities performing a given passive m=
easurement task are described=0A=A0  according to a reference model.=0A=0A=
=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=
 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =
=A0 =A0 =A0 =A0 =0A=0A=0APlease note that it may take a couple of minutes f=
rom the time of submission=0Auntil the htmlized version and diff are availa=
ble at tools.ietf.org.=0A=0AThe IETF Secretariat
--461871616-978520638-1403648851=:57463
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<html><body><div style=3D"color:#000; background-color:#fff; font-family:He=
lveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;fo=
nt-size:12pt"><div><span>Guys,</span></div><div style=3D"color: rgb(0, 0, 0=
); font-size: 16px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica=
, Arial, 'Lucida Grande', sans-serif; font-style: normal; background-color:=
 transparent;"><span><br></span></div><div style=3D"color: rgb(0, 0, 0); fo=
nt-size: 16px; font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Ari=
al, 'Lucida Grande', sans-serif; font-style: normal; background-color: tran=
sparent;"><span>We have posted a new version of our Passive Framework draft=
. &nbsp; Please take a look and give us comments!&nbsp;</span></div><div></=
div><div>&nbsp;</div><div>Thanks so much.</div><div><br></div><div>Nalini E=
lkins<br>Inside Products, Inc.<br>(831) 659-8360<br>www.insidethestack.com<=
br></div><div><br></div>  <div style=3D"font-family: HelveticaNeue,
 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size=
: 12pt;"> <div style=3D"font-family: HelveticaNeue, 'Helvetica Neue', Helve=
tica, Arial, 'Lucida Grande', sans-serif; font-size: 12pt;"> <div dir=3D"lt=
r"> ----- Forwarded Message -----<br>  <font size=3D"2" face=3D"Arial"> <b>=
<span style=3D"font-weight:bold;">From:</span></b> "internet-drafts@ietf.or=
g" &lt;internet-drafts@ietf.org&gt;<br> <b><span style=3D"font-weight: bold=
;">To:</span></b> Greg Mirsky &lt;gregory.mirsky@ericsson.com&gt;; Nalini E=
lkins &lt;nalini.elkins@insidethestack.com&gt;; Lianshu Zheng &lt;vero.zhen=
g@huawei.com&gt;; Nalini Elkins &lt;nalini.elkins@insidethestack.com&gt;; G=
reg Mirsky &lt;gregory.mirsky@ericsson.com&gt;; Deng Lingli &lt;denglingli@=
chinamobile.com&gt;; Michael Ackermann &lt;mike.ackermann@bcbsmi.com&gt;; M=
ichael Ackermann &lt;mike.ackermann@bcbsmi.com&gt;; Lingli Deng &lt;denglin=
gli@chinamobile.com&gt;; Lianshu Zheng &lt;vero.zheng@huawei.com&gt; <br>
 <b><span style=3D"font-weight: bold;">Sent:</span></b> Tuesday, June 24, 2=
014 3:26 PM<br> <b><span style=3D"font-weight: bold;">Subject:</span></b> N=
ew Version Notification for draft-zheng-ippm-framework-passive-01.txt<br> <=
/font> </div> <div class=3D"y_msg_container"><br><br>A new version of I-D, =
draft-zheng-ippm-framework-passive-01.txt<br>has been successfully submitte=
d by Nalini Elkins and posted to the<br>IETF repository.<br><br>Name:&nbsp;=
&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; draft-zheng-ippm-framework-passive<br>Revis=
ion:&nbsp;&nbsp;&nbsp; 01<br>Title:&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; Fr=
amework for IP Passive Performance Measurements<br>Document date:&nbsp;&nbs=
p;&nbsp; 2014-06-24<br>Group:&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; Individu=
al Submission<br>Pages:&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; 13<br>URL:&nbs=
p; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <a href=3D"http://www.ietf.org/intern=
et-drafts/draft-zheng-ippm-framework-passive-01.txt"
 target=3D"_blank">http://www.ietf.org/internet-drafts/draft-zheng-ippm-fra=
mework-passive-01.txt</a><br>Status:&nbsp; &nbsp; &nbsp; &nbsp;  <a href=3D=
"https://datatracker.ietf.org/doc/draft-zheng-ippm-framework-passive/" targ=
et=3D"_blank">https://datatracker.ietf.org/doc/draft-zheng-ippm-framework-p=
assive/</a><br>Htmlized:&nbsp; &nbsp; &nbsp;  <a href=3D"http://tools.ietf.=
org/html/draft-zheng-ippm-framework-passive-01" target=3D"_blank">http://to=
ols.ietf.org/html/draft-zheng-ippm-framework-passive-01</a><br>Diff:&nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp;  <a href=3D"http://www.ietf.org/rfcdiff?url2=3D=
draft-zheng-ippm-framework-passive-01" target=3D"_blank">http://www.ietf.or=
g/rfcdiff?url2=3Ddraft-zheng-ippm-framework-passive-01</a><br><br>Abstract:=
<br>&nbsp;  This document describes the framework for passive measurement. =
In<br>&nbsp;  particular, the differences between passive and active measur=
ements<br>&nbsp;  are analyzed, general considerations for both metric defi=
nition
 and<br>&nbsp;  measurement methodology are discussed, and requirements for=
 various<br>&nbsp;  entities performing a given passive measurement task ar=
e described<br>&nbsp;  according to a reference model.<br><br>&nbsp; &nbsp;=
 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &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; &nbsp; &nbsp; &nbsp; =
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <br><br><br>Please note th=
at it may take a couple of minutes from the time of submission<br>until the=
 htmlized version and diff are available at tools.ietf.org.<br><br>The IETF=
 Secretariat<br><br><br><br></div> </div> </div>  </div></body></html>
--461871616-978520638-1403648851=:57463--


From nobody Wed Jun 25 09:57:01 2014
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From: Steve Baillargeon <steve.baillargeon@ericsson.com>
To: Brian Trammell <ietf@trammell.ch>, "ippm@ietf.org" <ippm@ietf.org>, "k.pentikousis@eict.de" <k.pentikousis@eict.de>
Thread-Topic: [ippm] WGLC on draft-ietf-ippm-ipsec-03
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Subject: Re: [ippm] WGLC on draft-ietf-ippm-ipsec-03
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Hi Kosta, Hi Brian
I support with the following comments:

- The tile of the draft is misleading. It should say something like O/TWAMP=
 Shared Secret Key Feature
- The use case in section 1 is not clear. It should indicate this mode is i=
ntended for protecting and exchanging OWAMP/TWAMP test protocol between two=
 IKEv2 systems when OWAMP/TWAMP control/test traffic is not protected by IP=
Sec=20
- I personally think the most common case is to protect OWAMP/TWAMP control=
/test traffic with IPsec. It is important to highlight the benefits associa=
ted with this new mode versus the common unauthenticated O/TWAMP mode prote=
cted via AH or ESP.
- in section 4.1 first sentence, the requirement level is ambiguous. I thin=
k it should say...the shared secret MUST be derived ...(as opposed to can).=
 Same comment for the second paragraph, the word if should be replaced by w=
hen.
- end of section 4.1, the expected behavior when the IKEv2 SA is rekeyed is=
 not clear. Same is true when the IKEv2 SA is deleted for whatever reasons.=
 What should the O/TWAMP  part of the IKE system do when the IKE SA is reke=
yed or deleted? Should it close its test sessions and setup new test sessio=
ns using the key associated with the newly established IKEv2 SA? Waiting fo=
r the lifetime to expire does not make sense. And if you do, what happens n=
ext?
- section 4.2. Three (3) new TWAMP modes are not needed. One TWAMP mode cal=
led Shared Secret Key should be sufficient. This mode can then be used on c=
onjunction with the authenticated, encrypted and mixed modes. Please do not=
 use the X mode over IKEv2. The text "over" is always misleading.

Regards
Steve Baillargeon
Ericsson


-----Original Message-----
From: ippm [mailto:ippm-bounces@ietf.org] On Behalf Of Brian Trammell
Sent: June-24-14 11:10 AM
To: ippm@ietf.org
Subject: [ippm] WGLC on draft-ietf-ippm-ipsec-03

Greetings, all,

This message begins WGLC on draft-ietf-ippm-ipsec-03. Please send any comme=
nts to the list (including simply "I've read the draft and support publicat=
ion") by the end of day Tuesday 8 July 2014.

Thanks, cheers,

Brian

Begin forwarded message:

> From: Kostas Pentikousis <k.pentikousis@eict.de>
> Subject: [ippm] WG: New Version Notification for draft-ietf-ippm-ipsec-03=
.txt
> Date: 5 Jun 2014 14:01:50 GMT+2
> To: "ippm@ietf.org" <ippm@ietf.org>, "ipsec@ietf.org" <ipsec@ietf.org>
>=20
> Dear all,
>=20
> We have updated the draft on "Network Performance Measurement for IPsec" =
(see below). We would greatly appreciate comments from both IPPM and IPSEC =
as we're heading to finalizing this work item in IPPM.
>=20
> Best regards,
>=20
> Kostas
>=20
>=20
> -----Urspr=FCngliche Nachricht-----
> Von: internet-drafts@ietf.org [mailto:internet-drafts@ietf.org]=20
> Gesendet: Donnerstag, 5. Juni 2014 13:56
> An: Yang Cui; Emma Zhang; Emma Zhang; Yang Cui; Kostas Pentikousis; Kosta=
s Pentikousis
> Betreff: New Version Notification for draft-ietf-ippm-ipsec-03.txt
>=20
>=20
> A new version of I-D, draft-ietf-ippm-ipsec-03.txt has been successfully =
submitted by Kostas Pentikousis and posted to the IETF repository.
>=20
> Name:		draft-ietf-ippm-ipsec
> Revision:	03
> Title:		Network Performance Measurement for IPsec
> Document date:	2014-06-05
> Group:		ippm
> Pages:		12
> URL:            http://www.ietf.org/internet-drafts/draft-ietf-ippm-ipsec=
-03.txt
> Status:         https://datatracker.ietf.org/doc/draft-ietf-ippm-ipsec/
> Htmlized:       http://tools.ietf.org/html/draft-ietf-ippm-ipsec-03
> Diff:           http://www.ietf.org/rfcdiff?url2=3Ddraft-ietf-ippm-ipsec-=
03
>=20
> Abstract:
>   The O/TWAMP security mechanism requires that both the client and
>   server endpoints possess a shared secret.  Since the currently-
>   standardized O/TWAMP security mechanism only supports a pre-shared
>   key mode, large scale deployment of O/TWAMP is hindered
>   significantly.  At the same time, recent trends point to wider IKEv2
>   deployment which, in turn, calls for mechanisms and methods that
>   enable tunnel end-users, as well as operators, to measure one-way and
>   two-way network performance in a standardized manner.  This document
>   discusses the use of keys derived from an IKEv2 SA as the shared key
>   in O/TWAMP.  If the shared key can be derived from the IKEv2 SA, O/
>   TWAMP can support certificate-based key exchange, which would allow
>   for more operational flexibility and efficiency.  The key derivation
>   presented in this document can also facilitate automatic key
>   management.
>=20
>=20
>=20
>=20
> Please note that it may take a couple of minutes from the time of submiss=
ion until the htmlized version and diff are available at tools.ietf.org.
>=20
> The IETF Secretariat
>=20
> _______________________________________________
> ippm mailing list
> ippm@ietf.org
> https://www.ietf.org/mailman/listinfo/ippm


From nobody Wed Jun 25 23:42:36 2014
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Subject: [ippm] I-D Action: draft-mizrahi-ippm-checksum-trailer-01.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 IP Performance Metrics Working Group of the IETF.

        Title           : UDP Checksum Trailer in OWAMP and TWAMP
        Author          : Tal Mizrahi
	Filename        : draft-mizrahi-ippm-checksum-trailer-01.txt
	Pages           : 11
	Date            : 2014-06-25

Abstract:
   The One-Way Active Measurement Protocol (OWAMP) and the Two-Way
   Active Measurement Protocol (TWAMP) are used for performance
   monitoring in IP networks. Delay measurement is performed in these
   protocols by using timestamped test packets. Some implementations use
   hardware-based timestamping engines that integrate the accurate
   transmission timestamp into every outgoing OWAMP/TWAMP test packet
   during transmission.  Since these packets are transported over UDP,
   the UDP checksum field is then updated to reflect this modification.
   This document proposes to use the last 2 octets of every test packet
   as a Checksum Trailer, allowing timestamping engines to reflect the
   checksum modification in the last 2 octets rather than in the UDP
   checksum field. The behavior defined in this document is completely
   interoperable with existing OWAMP/TWAMP implementations.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-mizrahi-ippm-checksum-trailer/

There's also a htmlized version available at:
http://tools.ietf.org/html/draft-mizrahi-ippm-checksum-trailer-01

A diff from the previous version is available at:
http://www.ietf.org/rfcdiff?url2=draft-mizrahi-ippm-checksum-trailer-01


Please note that it may take a couple of minutes from the time of submission
until the htmlized version and diff are available at tools.ietf.org.

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


From nobody Wed Jun 25 23:43:14 2014
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From: Tal Mizrahi <talmi@marvell.com>
To: "ippm@ietf.org" <ippm@ietf.org>, "ippm-chairs@tools.ietf.org Chairs (ippm-chairs@tools.ietf.org)" <ippm-chairs@tools.ietf.org>
Date: Thu, 26 Jun 2014 09:42:54 +0300
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--_000_74470498B659FA4687F0B0018C19A89C01E731F0231EILMB01marve_
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Hi,

Posted an updated draft to avoid expiration.
http://tools.ietf.org/html/draft-mizrahi-ippm-checksum-trailer-01
No changes since the last draft.

Thanks,
Tal Mizrahi.


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<html xmlns:v=3D"urn:schemas-microsoft-com:vml" xmlns:o=3D"urn:schemas-micr=
osoft-com:office:office" xmlns:w=3D"urn:schemas-microsoft-com:office:word" =
xmlns:m=3D"http://schemas.microsoft.com/office/2004/12/omml" xmlns=3D"http:=
//www.w3.org/TR/REC-html40"><head><meta http-equiv=3DContent-Type content=
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oft Word 14 (filtered medium)"><style><!--
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	font-family:"Calibri","sans-serif";
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	{mso-style-type:export-only;
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<o:shapedefaults v:ext=3D"edit" spidmax=3D"1026" />
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<o:shapelayout v:ext=3D"edit">
<o:idmap v:ext=3D"edit" data=3D"1" />
</o:shapelayout></xml><![endif]--></head><body lang=3DEN-US link=3Dblue vli=
nk=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal>Hi,<o:p></o:p></=
p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Posted an =
updated draft to avoid expiration.<o:p></o:p></p><p class=3DMsoNormal><a hr=
ef=3D"http://tools.ietf.org/html/draft-mizrahi-ippm-checksum-trailer-01">ht=
tp://tools.ietf.org/html/draft-mizrahi-ippm-checksum-trailer-01</a><o:p></o=
:p></p><p class=3DMsoNormal>No changes since the last draft.<o:p></o:p></p>=
<p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Thanks,<o:p>=
</o:p></p><p class=3DMsoNormal><span style=3D'font-size:10.0pt;font-family:=
"Arial","sans-serif"'>Tal Mizrahi.<o:p></o:p></span></p><p class=3DMsoNorma=
l><o:p>&nbsp;</o:p></p></div></body></html>=

--_000_74470498B659FA4687F0B0018C19A89C01E731F0231EILMB01marve_--

