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Re: [spring] Comments on draft-ietf-spring-bfd-07

Greg Mirsky <gregimirsky@gmail.com> Tue, 01 August 2023 22:45 UTC

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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Tue, 01 Aug 2023 15:45:11 -0700
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To: Ketan Talaulikar <ketant.ietf@gmail.com>
Cc: SPRING WG <spring@ietf.org>
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Subject: Re: [spring] Comments on draft-ietf-spring-bfd-07
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Hi Ketan,
thank you for clarifying the SR Policy composition. We've updated the draft
to address your suggestion. I greatly appreciate it if you review the
updates highlighted in the diff
<https://author-tools.ietf.org/iddiff?url2=draft-ietf-spring-bfd-08> and
would kindly share your feedback.

Regards,
Greg (on behalf of the authors)

On Wed, Jul 26, 2023 at 10:30 AM Ketan Talaulikar <ketant.ietf@gmail.com>
wrote:

> Hello All,
>
> Sharing the comments made at the mike in today's session to the list as we
> ran out of time:
>
> 1) The "path" to be monitored for SR Policy should be the Segment List and
> not Candidate path. Perhaps
> https://www.rfc-editor.org/rfc/rfc9256.html#section-2.13 will clarify the
> model for SR Policy. The RFC section 2 explains in more detail.
>
> 2) SR Policy construct is unidirectional and hence the issue of packet
> drops in reverse path is applicable to all forms. There may not always be a
> reverse path.
>
> 3) If there is a need to specify a reverse path, the same can be done
> without the need for LSP ping bootstrap overhead. E.g.,
> https://datatracker.ietf.org/doc/html/draft-ali-spring-bfd-sr-policy-10#section-3.3
> - there are also other mechanisms like using the BSID of the reverse path
> to return.
>
> Thanks,
> Ketan
>
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