Re: [Lsr] LSR WG Adoption Call for "Algorithm Related IGP-Adjacency SID Advertisement"

["Ketan Talaulikar (ketant)" <[e-mail]>]

Hi Gyan,

This document does not even “update” the LSR Flex-Algo draft since it is introducing something new and on top. It does not change what’s in the LSR Flex-Algo draft.

This document would be pretty much independent and an optional/add-on element on top of the LSR Flex-Algo solution.

Thanks,
Ketan

From: Gyan Mishra <[e-mail]>
Sent: 10 June 2021 18:54
To: Ketan Talaulikar (ketant) <[e-mail]>
Cc: [e-mail]; [e-mail]; [e-mail]
Subject: Re: [Lsr] LSR WG Adoption Call for "Algorithm Related IGP-Adjacency SID Advertisement"


Hi Ketan

See in-line

Thanks

Gyan

On Thu, Jun 10, 2021 at 4:40 AM Ketan Talaulikar (ketant) <[e-mail]<mailto:[e-mail]>> wrote:
One quick clarification on the following:

Does this draft update the SR IGP extensions for SR-MPLS RFC 8665 8666 8667.
[PSF] Yes.
KT> This draft proposes something new (an Algo-specific Adj-SID) and their relevant signalling extensions for the IGPs. It does not change anything in the RFCs referred to above. Hence there is no "updates" consideration here.

    Gyan>This is a confusing point and maybe something the authors can clarify in the text.  So this  draft defines a new Adj-Sid that has an Algo identifier specifically for Flex Algo and if that’s the case I agree it does not update the SR-MPLS IGP extensions, but instead should update the Flex Algo extensions.


Thanks,
Ketan

-----Original Message-----
From: Lsr <[e-mail]<mailto:[e-mail]>> On Behalf Of [e-mail]<mailto:[e-mail]>
Sent: 10 June 2021 11:48
To: [e-mail]<mailto:[e-mail]>
Cc: [e-mail]<mailto:[e-mail]>; [e-mail]<mailto:[e-mail]>
Subject: Re: [Lsr] LSR WG Adoption Call for "Algorithm Related IGP-Adjacency SID Advertisement"

Hi Gyan,

Thanks for your support.
Please see inline [PSF]

Regards,
PSF


------------------原始邮件------------------
发件人：GyanMishra
收件人：Christian Hopps;
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日 期 ：2021年06月10日 13:05
主 题 ：Re: [Lsr] LSR WG Adoption Call for "Algorithm Related IGP-Adjacency SID Advertisement"
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I support WG adoption of this draft.

This draft fills the gap where multiple algorithm identifiers are associated with a link applied to prefix sid and to add parity as now this draft provides Algo association with the adjacency SID as well.  At the end of the introduction is stated that the algorithm identifier should be included as part of the adjacency SID advertisement for SR-MPLS.   What about SRv6?

[PSF] For SRv6, tt was born with this ability, since SRv6 END.X SID can be allocated from an algorithm specific Locator.


Does this draft update the SR IGP extensions for SR-MPLS RFC 8665 8666 8667.

[PSF] Yes.


Also does it update the Flex Algo draft?
https://datatracker.ietf.org/doc/html/draft-ietf-lsr-flex-algo-16

[PSF] No.


In section 5 operations describes how flex Algo plane can now be differentiated on the same  adjacency link with the Algo identifier adjacency sid to Algo plane can now have QOS and link resources characteristics defined which maybe beneficial to TEAS network slicing application as well as used in conjunction with a resource sid for underlay resource provisioning for Enhanced VPN overlay.

[PSF] Agree. Flex-algo can be used alone as a network slicing mechanism for some limited scenarios, and adj-sid per algo provide a basis for this purpose. However this is outside the scope of this document, so it is not described in detailed.


Kind Regards

Gyan

On Wed, May 26, 2021 at 5:00 PM Christian Hopps <[e-mail]<mailto:[e-mail]>> wrote:

Hi Folks,

This begins a 2 week WG Adoption Call for the following draft:

https://datatracker.ietf.org/doc/draft-peng-lsr-algorithm-related-adjacency-sid/

Please indicate your support or objections by June 9th, 2021

Authors, please respond to the list indicating whether you are aware of any IPR that applies to this draft.

Thanks,
Acee and Chris.

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Gyan Mishra
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Gyan Mishra

Network Solutions Architect

Email [e-mail]<mailto:[e-mail]>

M 301 502-1347