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From: "Sriram, Kotikalapudi (Fed)" <kotikalapudi.sriram@nist.gov>
To: IDR <idr@ietf.org>, GROW WG <grow@ietf.org>
CC: "sidrops@ietf.org" <sidrops@ietf.org>, "idr-chairs@ietf.org" <idr-chairs@ietf.org>
Thread-Topic: Deprecation of AS_SET and AS_CONFED_SET -- feedback requested 
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Archived-At: <https://mailarchive.ietf.org/arch/msg/sidrops/JsgDseWMa8LurRI0Abe3D9u1u84>
Subject: [Sidrops] Deprecation of AS_SET and AS_CONFED_SET -- feedback requested
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There was significant interest expressed during a SIDROPS presentation in M=
ontreal
and in the discussion that followed at the mike about advancing the followi=
ng individual draft:
https://tools.ietf.org/html/draft-kumari-deprecate-as-set-confed-set-14 =20
(standards track)  =20

The authors have revised and uploaded a new version (-14).
Your inputs/comments are welcome. In particular, please share any specific=
=20
operational considerations/concerns you may have regarding this topic.

(Note: A BCP was published on this topics in 2011 -- https://tools.ietf.org=
/html/rfc6472 )  =20

Thank you.

Sriram =


From nobody Wed Aug  7 09:00:08 2019
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Subject: Re: [Sidrops] Deprecation of AS_SET and AS_CONFED_SET -- feedback requested
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Sriram, Kotikalapudi (Fed) wrote on 07/08/2019 18:42:
> The authors have revised and uploaded a new version (-14).
> Your inputs/comments are welcome. In particular, please share any specific
> operational considerations/concerns you may have regarding this topic.

It would be great if this were to progress to standards track RFC. 
AS_SETs are a nuisance and cause real-world confusion with no 
appreciable gain.

Nick


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Subject: Re: [Sidrops] [GROW] Deprecation of AS_SET and AS_CONFED_SET -- feedback requested
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Sriram: 

Are you asking for WG Adoption of this draft at this time or just feedback?


Sue 

-----Original Message-----
From: GROW [mailto:grow-bounces@ietf.org] On Behalf Of Sriram, Kotikalapudi
(Fed)
Sent: Wednesday, August 7, 2019 11:43 AM
To: IDR; GROW WG
Cc: idr-chairs@ietf.org; sidrops@ietf.org
Subject: [GROW] Deprecation of AS_SET and AS_CONFED_SET -- feedback
requested

There was significant interest expressed during a SIDROPS presentation in
Montreal and in the discussion that followed at the mike about advancing the
following individual draft:
https://tools.ietf.org/html/draft-kumari-deprecate-as-set-confed-set-14  
(standards track)   

The authors have revised and uploaded a new version (-14).
Your inputs/comments are welcome. In particular, please share any specific
operational considerations/concerns you may have regarding this topic.

(Note: A BCP was published on this topics in 2011 --
https://tools.ietf.org/html/rfc6472 )   

Thank you.

Sriram
_______________________________________________
GROW mailing list
GROW@ietf.org
https://www.ietf.org/mailman/listinfo/grow


From nobody Wed Aug  7 15:24:44 2019
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Subject: [Sidrops] =?utf-8?q?BCP_224=2C_RFC_8634_on_BGPsec_Router_Certifi?= =?utf-8?q?cate_Rollover?=
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A new Request for Comments is now available in online RFC libraries.

        BCP 224        
        RFC 8634

        Title:      BGPsec Router Certificate Rollover 
        Author:     B. Weis, 
                    R. Gagliano,
                    K. Patel
        Status:     Best Current Practice
        Stream:     IETF
        Date:       August 2019
        Mailbox:    bew.stds@gmail.com, 
                    rogaglia@cisco.com, 
                    keyur@arrcus.com
        Pages:      11
        Characters: 26170
        See Also:   BCP 224

        I-D Tag:    draft-ietf-sidrops-bgpsec-rollover-04.txt

        URL:        https://www.rfc-editor.org/info/rfc8634

        DOI:        10.17487/RFC8634

Certification Authorities (CAs) within the Resource Public Key
Infrastructure (RPKI) manage BGPsec router certificates as well as
RPKI certificates.  The rollover of BGPsec router certificates must
be carefully performed in order to synchronize the distribution of
router public keys with BGPsec UPDATE messages verified with those
router public keys.  This document describes a safe rollover process,
and it discusses when and why the rollover of BGPsec router
certificates is necessary.  When this rollover process is followed,
the rollover will be performed without routing information being
lost.

This document is a product of the SIDR Operations Working Group of the IETF.


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A new Request for Comments is now available in online RFC libraries.

        
        RFC 8635

        Title:      Router Keying for BGPsec 
        Author:     R. Bush,
                    S. Turner,
                    K. Patel
        Status:     Standards Track
        Stream:     IETF
        Date:       August 2019
        Mailbox:    randy@psg.com, 
                    sean@sn3rd.com, 
                    keyur@arrcus.com
        Pages:      21
        Characters: 48774
        Updates/Obsoletes/SeeAlso:   None

        I-D Tag:    draft-ietf-sidrops-rtr-keying-06.txt

        URL:        https://www.rfc-editor.org/info/rfc8635

        DOI:        10.17487/RFC8635

BGPsec-speaking routers are provisioned with private keys in order to
sign BGPsec announcements.  The corresponding public keys are
published in the Global Resource Public Key Infrastructure (RPKI),
enabling verification of BGPsec messages.  This document describes
two methods of generating the public-private key pairs: router-driven
and operator-driven.

This document is a product of the SIDR Operations Working Group of the IETF.

This is now a Proposed Standard.

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A new Request for Comments is now available in online RFC libraries.

        
        RFC 8630

        Title:      Resource Public Key Infrastructure (RPKI) 
                    Trust Anchor Locator 
        Author:     G. Huston, 
                    S. Weiler,
                    G. Michaelson, 
                    S. Kent,
                    T. Bruijnzeels
        Status:     Standards Track
        Stream:     IETF
        Date:       August 2019
        Mailbox:    gih@apnic.net, 
                    weiler@csail.mit.edu, 
                    ggm@apnic.net,
                    kent@alum.mit.edu, 
                    tim@nlnetlabs.nl
        Pages:      11
        Characters: 24173
        Obsoletes:  RFC 7730

        I-D Tag:    draft-ietf-sidrops-https-tal-08.txt

        URL:        https://www.rfc-editor.org/info/rfc8630

        DOI:        10.17487/RFC8630

This document defines a Trust Anchor Locator (TAL) for the Resource
Public Key Infrastructure (RPKI).  The TAL allows Relying Parties in
the RPKI to download the current Trust Anchor (TA) Certification
Authority (CA) certificate from one or more locations and verify that
the key of this self-signed certificate matches the key on the TAL.
Thus, Relying Parties can be configured with TA keys but can allow
these TAs to change the content of their CA certificate.  In
particular, it allows TAs to change the set of IP Address Delegations
and/or Autonomous System Identifier Delegations included in the
extension(s) (RFC 3779) of their certificate.

This document obsoletes the previous definition of the TAL as
provided in RFC 7730 by adding support for Uniform Resource
Identifiers (URIs) (RFC 3986) that use HTTP over TLS (HTTPS) (RFC
7230) as the scheme.

This document is a product of the SIDR Operations Working Group of the IETF.

This is now a Proposed Standard.

STANDARDS TRACK: This document specifies an Internet Standards Track
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A new meeting session request has just been submitted by Chris Morrow, a Chair of the sidrops working group.


---------------------------------------------------------
Working Group Name: SIDR Operations
Area Name: Operations and Management Area
Session Requester: Chris Morrow

Number of Sessions: 1
Length of Session(s):  1.5 Hours
Number of Attendees: 62
Conflicts to Avoid: 
 Chair Conflict: idr grow lsvr rtgwg lsr mpls pim spring 6man




People who must be present:
  Keyur Patel
  Chris Morrow
  Warren &quot;Ace&quot; Kumari

Resources Requested:

Special Requests:
  
---------------------------------------------------------


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From: Alexander Azimov <a.e.azimov@gmail.com>
Date: Tue, 20 Aug 2019 12:08:38 +0300
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Subject: Re: [Sidrops] draft-ietf-sidrops-aspa-verification-01: Handling unknowns
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--0000000000002baa74059088cee1
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Hi Jakob,

I'm sorry that it took so long to reply to your suggestion.

I think that explicitly state what means the absence of record (AS-A, AS-C)
is a good idea.
There are already several minor issues that were found in the draft, I will
work them through in the next couple of weeks.

=D1=81=D0=B1, 27 =D0=B8=D1=8E=D0=BB. 2019 =D0=B3. =D0=B2 04:35, Jakob Heitz=
 (jheitz) <jheitz@cisco.com>:

> The draft states:
>
> An ASPA attests that a Customer AS holder (CAS) has authorized a
> particular Provider AS (PAS) to propagate the Customer=E2=80=99s IPv4/IPv=
6
> announcements onward, e.g. to the Provider=E2=80=99s upstream providers o=
r peers.
>
> I suggest to make this more precise and to add the "otherwise" condition:
>
> An ASPA attests that a Customer AS holder (CAS) has authorized a
> particular Provider AS (PAS) to propagate the Customer=E2=80=99s IPv4/IPv=
6
> announcements to all of the provider's neighbors. If an AS, AS-A publishe=
s
> at least one ASPA and it lists AS-B as a provider and AS-C is connected t=
o
> AS-A, but AS-A does not list AS-C in an ASPA, then AS-A authorizes AS-B t=
o
> propagate the announcements of AS-A to all of AS-B's neighbor ASes and
> authorizes AS-C to propagate AS-A's announcements only to ASes that
> consider AS-C to be their provider. I.e., AS-A prohibits AS-C from
> propagating the announcements of AS-A to AS-D if AS-D does not consider
> AS-C to be provider for AS-D.
>
> Consequently, a chain of ASPAs can be used to verify the plausibility of
> an AS-PATH.
>
>
> Thanks,
> Jakob.
>
>
> On Jul 26, 2019, at 11:08 AM, Alexander Azimov <a.e.azimov@gmail.com>
> wrote:
>
> I'm sorry for the last email. It was supposed to be bigger.
>
> =D0=BF=D1=82, 26 =D0=B8=D1=8E=D0=BB. 2019 =D0=B3. =D0=B2 08:38, Jakob Hei=
tz (jheitz) <jheitz@cisco.com>:
>
>> If you receive an AS-PATH of 2 ASes and neither of them make any
>> attestation,
>>
>> then your procedure calls it valid. It could be invalid,
>>
>> so it must be considered unknown.
>>
> It an interesting point. When I was writing the ASPATH verification
> procedure I had in mind that we need to detect invalids. But for debuggin=
g
> purposes, it might be also useful to distinguish fully verified paths whe=
re
> all pairs are valid and those paths that represent a combination of valid
> and unknown pairs. It will also require clarification that for backward
> compatibility such unknown paths MUST be treated as valid. We should add
> this option into consideration.
>
> If an AS-PATH contains an AS-SET, then the segments on either side of
>>
>> the AS-SET can still be verified. If any such segment turns out to be
>>
>> invalid, then the whole path must be considered invalid, not unverifiabl=
e.
>>
> I do agree and that's how both downstream path upstream path procedures
> are defined in the draft.
> As we discussed in person, we might need additional clarification in the
> beginning where {AS(I), AS(I-1)...} sequence is defined.
>
>
>> My procedure accounts for these cases and more.
>>
>> For the cases where every AS makes an attestation, my procedure agrees
>> with yours.
>>
> If you have ASPA(1, 2) you can't make assumptions about relations of 2.
> Otherwise, it may lead to incorrect results in the case of siblings.
>
> BTW, you have a copy/paste error in 5.2 Downstream paths:
>>
>> If a route from ROUTE_AFI address family is received from a customer
>>
>> should be:
>>
>> If a route from ROUTE_AFI address family is received from a provider
>>
>> Yes, you are right. Copy-paste can become tricky. Will be fixed in the
> next version.
>
>

--=20
Best regards,
Alexander Azimov

--0000000000002baa74059088cee1
Content-Type: text/html; charset="UTF-8"
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<div dir=3D"ltr"><div>Hi Jakob,</div><div><br></div>I&#39;m sorry that it t=
ook so long to reply to your suggestion.<br><br>I think that explicitly sta=
te what means the absence of record (AS-A, AS-C) is a good idea.<br>There a=
re already several minor issues that were found in the draft, I will work t=
hem through in the next couple of weeks. </div><br><div class=3D"gmail_quot=
e"><div dir=3D"ltr" class=3D"gmail_attr">=D1=81=D0=B1, 27 =D0=B8=D1=8E=D0=
=BB. 2019 =D0=B3. =D0=B2 04:35, Jakob Heitz (jheitz) &lt;<a href=3D"mailto:=
jheitz@cisco.com">jheitz@cisco.com</a>&gt;:<br></div><blockquote class=3D"g=
mail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204=
,204,204);padding-left:1ex">



<div dir=3D"auto">
The draft states:
<div><br>
<div>An ASPA attests that a Customer AS holder (CAS) has authorized a parti=
cular Provider AS (PAS) to propagate the Customer=E2=80=99s IPv4/IPv6 annou=
ncements onward, e.g. to the Provider=E2=80=99s upstream providers or peers=
.</div>
<div><br>
</div>
<div>I suggest to make this more precise and to add the &quot;otherwise&quo=
t; condition:</div>
<div><br>
</div>
<div>An ASPA attests that a Customer AS holder (CAS) has authorized a parti=
cular Provider AS (PAS) to propagate the Customer=E2=80=99s IPv4/IPv6 annou=
ncements to all of the provider&#39;s neighbors. If an AS, AS-A publishes a=
t least one ASPA and it lists AS-B as a provider
 and AS-C is connected to AS-A, but AS-A does not list AS-C in an ASPA, the=
n AS-A authorizes AS-B to propagate the announcements of AS-A to all of AS-=
B&#39;s neighbor ASes and authorizes AS-C to propagate AS-A&#39;s announcem=
ents only to ASes that consider AS-C to
 be their provider. I.e., AS-A prohibits AS-C from propagating the announce=
ments of AS-A to AS-D if AS-D does not consider AS-C to be provider for AS-=
D.</div>
<div><br>
</div>
<div>Consequently, a chain of ASPAs can be used to verify the plausibility =
of an AS-PATH.</div>
<div><br>
<div><br>
<div id=3D"gmail-m_2198705632326305422AppleMailSignature" dir=3D"ltr">Thank=
s,<br>
<div>Jakob.</div>
<div><br>
</div>
</div>
<div dir=3D"ltr"><br>
On Jul 26, 2019, at 11:08 AM, Alexander Azimov &lt;<a href=3D"mailto:a.e.az=
imov@gmail.com" target=3D"_blank">a.e.azimov@gmail.com</a>&gt; wrote:<br>
<br>
</div>
<blockquote type=3D"cite">
<div dir=3D"ltr">
<div dir=3D"ltr">
<div dir=3D"ltr">I&#39;m sorry for the last email. It was supposed to be bi=
gger.<br>
</div>
<br>
<div class=3D"gmail_quote">
<div dir=3D"ltr" class=3D"gmail_attr">=D0=BF=D1=82, 26 =D0=B8=D1=8E=D0=BB. =
2019 =D0=B3. =D0=B2 08:38, Jakob Heitz (jheitz) &lt;<a href=3D"mailto:jheit=
z@cisco.com" target=3D"_blank">jheitz@cisco.com</a>&gt;:<br>
</div>
<blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-=
left:1px solid rgb(204,204,204);padding-left:1ex">
<div lang=3D"EN-US">
<div class=3D"gmail-m_2198705632326305422gmail-m_8485921529776962215WordSec=
tion1">
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;;color:rgb(112,48,160)">If you receive an AS-PATH of 2 ASes an=
d neither of them make any attestation,</span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;;color:rgb(112,48,160)">then your procedure calls it valid. It=
 could be invalid,</span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;;color:rgb(112,48,160)">so it must be considered unknown.</spa=
n></p>
</div>
</div>
</blockquote>
It an interesting point. When I was writing the ASPATH verification procedu=
re I had in mind that we need to detect invalids. But for debugging purpose=
s, it might be also useful to distinguish fully verified paths where all pa=
irs are valid and those paths that
 represent a combination of valid and unknown pairs. It will also require c=
larification that for backward compatibility such unknown paths MUST be tre=
ated as valid. We should add this option into consideration.
<br>
</div>
<div class=3D"gmail_quote"><br>
<blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-=
left:1px solid rgb(204,204,204);padding-left:1ex">
<div lang=3D"EN-US">
<div class=3D"gmail-m_2198705632326305422gmail-m_8485921529776962215WordSec=
tion1">
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;;color:rgb(112,48,160)"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;;color:rgb(112,48,160)">If an AS-PATH contains an AS-SET, then=
 the segments on either side of<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;;color:rgb(112,48,160)">the AS-SET can still be verified. If a=
ny such segment turns out to be<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;;color:rgb(112,48,160)">invalid, then the whole path must be c=
onsidered invalid, not unverifiable.</span></p>
</div>
</div>
</blockquote>
<div>I do agree and that&#39;s how both downstream path upstream path proce=
dures are defined in the draft.
<br>
</div>
<div>As we discussed in person, we might need additional clarification in t=
he beginning where {AS(I), AS(I-1)...} sequence is defined.<br>
</div>
<div>=C2=A0</div>
<blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-=
left:1px solid rgb(204,204,204);padding-left:1ex">
<div lang=3D"EN-US">
<div class=3D"gmail-m_2198705632326305422gmail-m_8485921529776962215WordSec=
tion1">
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;;color:rgb(112,48,160)"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;;color:rgb(112,48,160)">My procedure accounts for these cases =
and more.<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;;color:rgb(112,48,160)">For the cases where every AS makes an =
attestation, my procedure agrees with yours.</span></p>
</div>
</div>
</blockquote>
<div>If you have ASPA(1, 2) you can&#39;t make assumptions about relations =
of 2. Otherwise, it may lead to incorrect results in the case of siblings.<=
/div>
<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-=
left:1px solid rgb(204,204,204);padding-left:1ex">
<div lang=3D"EN-US">
<div class=3D"gmail-m_2198705632326305422gmail-m_8485921529776962215WordSec=
tion1">
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;;color:rgb(112,48,160)"><u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;;color:rgb(112,48,160)">BTW, you have a copy/paste error in 5.=
2 Downstream paths:<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;;color:black">If a route from ROUTE_AFI address family is rece=
ived from a customer<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10pt;font-family:&quot;Cour=
ier New&quot;;color:rgb(112,48,160)">should be:<u></u><u></u></span></p>
<pre><span style=3D"color:black">If a route from ROUTE_AFI address family i=
s received from a provider</span></pre>
</div>
</div>
</blockquote>
<div>Yes, you are right. Copy-paste can become tricky. Will be fixed in the=
 next version.</div>
</div>
<br>
</div>
</div>
</blockquote>
</div>
</div>
</div>
</div>

</blockquote></div><br clear=3D"all"><br>-- <br><div dir=3D"ltr" class=3D"g=
mail_signature"><div dir=3D"ltr">Best regards,<div>Alexander Azimov</div></=
div></div>

--0000000000002baa74059088cee1--


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From: Alexander Azimov <a.e.azimov@gmail.com>
Date: Tue, 20 Aug 2019 12:43:12 +0300
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To: Oleg Muravskiy <oleg@ripe.net>
Cc: Randy Bush <randy@psg.com>, SIDR Operations WG <sidrops@ietf.org>
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Subject: Re: [Sidrops] draft-ymbk-sidrops-ov-egress
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I'm slightly late, but I also support the adoption of this document.

=D0=BF=D0=BD, 29 =D0=B8=D1=8E=D0=BB. 2019 =D0=B3. =D0=B2 15:01, Oleg Muravs=
kiy <oleg@ripe.net>:

> On 23 Jul 2019, at 22:37, Randy Bush <randy@psg.com> wrote:
> >
> > request wg adoption of draft-ymbk-sidrops-ov-egress
> >
> > randy
>
> Support
>
> Oleg
>
> _______________________________________________
> Sidrops mailing list
> Sidrops@ietf.org
> https://www.ietf.org/mailman/listinfo/sidrops
>


--=20
Best regards,
Alexander Azimov

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<div dir=3D"ltr">I&#39;m slightly late, but I also support the adoption of =
this document.<br></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" cla=
ss=3D"gmail_attr">=D0=BF=D0=BD, 29 =D0=B8=D1=8E=D0=BB. 2019 =D0=B3. =D0=B2 =
15:01, Oleg Muravskiy &lt;<a href=3D"mailto:oleg@ripe.net">oleg@ripe.net</a=
>&gt;:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0=
px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On 23 Jul=
 2019, at 22:37, Randy Bush &lt;<a href=3D"mailto:randy@psg.com" target=3D"=
_blank">randy@psg.com</a>&gt; wrote:<br>
&gt; <br>
&gt; request wg adoption of draft-ymbk-sidrops-ov-egress<br>
&gt; <br>
&gt; randy<br>
<br>
Support<br>
<br>
Oleg<br>
<br>
_______________________________________________<br>
Sidrops mailing list<br>
<a href=3D"mailto:Sidrops@ietf.org" target=3D"_blank">Sidrops@ietf.org</a><=
br>
<a href=3D"https://www.ietf.org/mailman/listinfo/sidrops" rel=3D"noreferrer=
" target=3D"_blank">https://www.ietf.org/mailman/listinfo/sidrops</a><br>
</blockquote></div><br clear=3D"all"><br>-- <br><div dir=3D"ltr" class=3D"g=
mail_signature"><div dir=3D"ltr">Best regards,<div>Alexander Azimov</div></=
div></div>

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Subject: [Sidrops] Minor comments on draft-ietf-sidrops-aspa-profile-00
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Hi all,

Triggered by an email exchange with Alexander, I figured I would send my =
(minor) comments on the aspa profile to the list as well.

=3D Multiple "providerASID"

For ASPA verification it's important that routers get all =
"providerASIDs" for a "customerASID". Since it's a single "customerASID" =
who signs the ASPA I think it would be best to allow all "providerASIDs" =
in a single object. Like so:

OLD:
       ASProviderAttestation ::=3D SEQUENCE {
           version [0] ASPAVersion DEFAULT v0,
           AFI  AddressFamilyIdentifier,
           customerASID  ASID,
           providerASID  ASID }

NEW:
       ASProviderAttestation ::=3D SEQUENCE {
           version [0] ASPAVersion DEFAULT v0,
           AFI  AddressFamilyIdentifier,
           customerASID  ASID,
           providerASID  SEQUENCE (SIZE(1..MAX)) OFASID }


Of course it's possible to make separate ASPA objects for each =
"providerASID", but I think it introduces avoidable risks with no clear =
benefits. When managing separate objects signing CAs would need to make =
sure that they publish changes as a set. If RPs use rsync as the fetch =
protocol they may learn of some, but not all, objects if the repository =
is being updated just as they are fetching.

The use of RRDP can mitigate this issue, but having a single object in =
this case is cheap and avoids some of the risks. An RP would always see =
the full set (for the moment that it validates).


=3D Small EE certs

The draft currently has:

      The autonomous system identifier delegation extension [RFC3779] is
      present in the end-entity (EE) certificate (contained within the
      ASPA), and the customer AS number in the ASPA is contained within
      the set of AS numbers specified by the EE certificate's autonomous
      system identifier delegation extension.

I think it's better practice to require that:

      The autonomous system identifier delegation extension [RFC3779] =
MUST
      be present in the end-entity (EE) certificate (contained within =
the
      ASPA), and MUST contain a single AS number that matches the =
customer
      AS number. The IP address delegation extensions MUST NOT be used.

The reason for this is fate-sharing. If any of the other irrelevant =
resources on the EE certificate would no longer be contained on the CA =
certificate - e.g. because of a resource transfer - then the object as a =
whole would become invalid.

There is still discussion about transfers and the deployment of =
'reconsidered' validation rules. But.. I think that's best discussed =
outside of this draft. Here it seems that the problems can simply be =
avoided by having a single AS on the EE cert.


=3D Add file extension to section 6 (IANA considerations)

In addition to the OIDs I believe a filename extension should be =
registered.=20

   IANA is to add an item for the Signed TAL file extension to the "RPKI
   Repository Name Scheme" created by [RFC6481] as follows:

          Extension  |   RPKI Object              | References
          -----------+-------------------------------------------
           .asp      |   Trust Anchor Keys        | [this document]

(of course feel free to chose another extension - I think four =
characters: .aspa would also be fine)=20

File extensions were introduced to help RPs in parsing - so they don't =
have to do trial an error parsing of objects as all possible types. The =
OIDs are not quite enough, because certificates and CRLs are not RPKI =
signed objects.


Kind regards

Tim



