Re: [spring] https://datatracker.ietf.org/doc/html/rfc8986 (Segment Routing over IPv6 (SRv6) Network Programming)

"Pablo Camarillo (pcamaril)" <pcamaril@cisco.com> Thu, 22 July 2021 17:26 UTC

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From: "Pablo Camarillo (pcamaril)" <pcamaril@cisco.com>
To: Rajesh M <mrajesh@juniper.net>
CC: "spring@ietf.org" <spring@ietf.org>
Thread-Topic: https://datatracker.ietf.org/doc/html/rfc8986 (Segment Routing over IPv6 (SRv6) Network Programming)
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Subject: Re: [spring] https://datatracker.ietf.org/doc/html/rfc8986 (Segment Routing over IPv6 (SRv6) Network Programming)
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Rajesh,

>From 8986 (section 4.16.3 last paragraph):
One of the applications of the USD flavor is the case of a Topology Independent Loop-Free Alternate (TI-LFA) in P routers with encapsulation. The USD flavor allows the last SR Segment Endpoint Node in the repair path list to decapsulate the IPv6 header added at the TI-LFA Point of Local Repair and forward the inner packet.

Hope it helps.

Cheers,
Pablo.

From: Rajesh M <mrajesh@juniper.net>
Sent: jueves, 22 de julio de 2021 13:48
To: cf(mailer list) <cf@cisco.com>om>; Pablo Camarillo (pcamaril) <pcamaril@cisco.com>om>; spring@ietf.org; Ketan Talaulikar (ketant) <ketant@cisco.com>
Subject: https://datatracker.ietf.org/doc/html/rfc8986 (Segment Routing over IPv6 (SRv6) Network Programming)

Hi All,


What is the use case for End SID with USD ? Mainly USD Flavor.



Apart from TILFA/MLA Decapsulation scenarios (When encapsulation is used at transit PLR).





Thanks

Rajesh














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