Hi Andrew,
Thanks for your comments and it was indeed the motivation for this solution for
the use-case brought forward.
Thanks,
Ketan
-----Original Message-----
From: Stone, Andrew (Nokia - CA/Ottawa) <andrew.st...@nokia.com>
Sent: 06 November 2020 00:45
To: Ketan Talaulikar (ketant) <ket...@cisco.com>; spring@ietf.org
Subject: Re: [spring] I-D Action:
draft-ietf-spring-segment-routing-policy-09.txt
Hi Ketan,
Thanks for this update / referencing the yang related question I had about
multiple objective/constraints (1). Regarding composite candidate path, quickly
thinking about it from a controller/pce point of view, it does seem like an
elegant solution to re-use the entire SR Policy construct in a nested manner to
achieve combination of TE constraint/objective patterns, avoiding a lot of
complexity in yang/protocol modelling at the cost of more SR Policy
headend/controller state to manage/deal/work with. I think it was a good idea
to have that restriction of a depth of one. No other comments or feedback yet,
will let this stew a bit.
Thanks again,
Andrew
On 2020-11-01, 8:02 PM, "spring on behalf of Ketan Talaulikar (ketant)"
<spring-boun...@ietf.org on behalf of ketant=40cisco....@dmarc.ietf.org> wrote:
Hello All,
We have just posted an update for the draft and following is the summary of
changes:
1) Introduction of the Composite Candidate Path construct to address a
pending comment from the WG (Ref :
https://mailarchive.ietf.org/arch/msg/spring/fEqE5TOwdh2vEyFm_MEjiXyP2ws/ and
https://mailarchive.ietf.org/arch/msg/spring/d9oSSbgp0jCExRx0SXyBY0CyqXU/)
2) Based on offline feedback received, updated SRv6 segment types to
include optional SRv6 SID and behavior instead of the new type that was
introduced for it in the v08.
3) Clarification of handling of colors and BGP multi-path scenarios based
on offline feedback received.
4) Clarification on considerations for TI-LFA for SR Policy as discussed in
the WG (Ref :
https://mailarchive.ietf.org/arch/msg/spring/EV1ytUsd5ZgkMHDN0IvFhw9id40/)
Please let know your comments/feedback.
Thanks,
Ketan (on behalf of co-authors)
-----Original Message-----
From: spring <spring-boun...@ietf.org> On Behalf Of internet-dra...@ietf.org
Sent: 02 November 2020 06:27
To: i-d-annou...@ietf.org
Cc: spring@ietf.org
Subject: [spring] I-D Action:
draft-ietf-spring-segment-routing-policy-09.txt
A New Internet-Draft is available from the on-line Internet-Drafts
directories.
This draft is a work item of the Source Packet Routing in Networking WG of
the IETF.
Title : Segment Routing Policy Architecture
Authors : Clarence Filsfils
Ketan Talaulikar
Daniel Voyer
Alex Bogdanov
Paul Mattes
Filename : draft-ietf-spring-segment-routing-policy-09.txt
Pages : 37
Date : 2020-11-01
Abstract:
Segment Routing (SR) allows a headend node to steer a packet flow
along any path. Intermediate per-flow states are eliminated thanks
to source routing. The headend node steers a flow into an SR Policy.
The header of a packet steered in an SR Policy is augmented with an
ordered list of segments associated with that SR Policy. This
document details the concepts of SR Policy and steering into an SR
Policy.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-spring-segment-routing-policy/
There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-spring-segment-routing-policy-09
https://datatracker.ietf.org/doc/html/draft-ietf-spring-segment-routing-policy-09
A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-spring-segment-routing-policy-09
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/
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