Re: BFD Echo mode coverage in BFD for VXLAN

Greg Mirsky <gregimirsky@gmail.com> Thu, 08 August 2019 23:07 UTC

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From: Greg Mirsky <gregimirsky@gmail.com>
Date: Thu, 8 Aug 2019 16:06:59 -0700
Message-ID: <CA+RyBmURk5ew+DuHm9S_6yv0op=ALadoMfwWw9Qs5XLpsog2fA@mail.gmail.com>
Subject: Re: BFD Echo mode coverage in BFD for VXLAN
To: "Carlos Pignataro (cpignata)" <cpignata@cisco.com>
Cc: rtg-bfd WG <rtg-bfd@ietf.org>, "bfd-chairs@ietf.org" <bfd-chairs@ietf.org>, Martin Vigoureux <martin.vigoureux@nokia.com>
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Dear All,
I have not set the when this poll closes. I hope that two weeks would be
sufficient time for the WG community to express their thoughts.

Dear Carlos,
thank you for sharing your opinion on the scope of the document in regard
to BFD Echo mode. You've expressed support for exploring the applicability
of the BFD Echo mode. Would you support that effort by contributing some
text, if WG decides that documenting the applicability of the Echo mode in
BFD over VXLAN is useful?

Regards,
Greg


On Wed, Aug 7, 2019 at 6:18 PM Carlos Pignataro (cpignata) <
cpignata@cisco.com> wrote:

> Dear Greg,
>
> The option of replacing the existing text for something more ambiguous and
> implicit does not seem like progress in my humble opinion. The spec ends up
> with the same capabilities, but the text is more obscure. I do not support
> that option.
>
> My recommendation for your consideration would be:
>
>    1. Explore if it is possible to run BFD Echo as a single-hop.
>    2. If yes, add text supporting it.
>    3. If no, add text explaining why not on technical grounds.
>
>
> A less desirable option would be if the WG does not care about BFD Echo,
> to explicitly keep it out of scope (not on technical grounds).
>
> Best,
>
> Carlos.
>
> On Aug 5, 2019, at 6:16 PM, Greg Mirsky <gregimirsky@gmail.com> wrote:
>
> Dear All,
> in course of reviews of the draft, several times a question was asked
> about the rationale for excluding BFD Echo from the scope of this document:
>
> 7.  Echo BFD
>
>    Support for echo BFD is outside the scope of this document.
>
> Much appreciate your consideration of the following options:
>
>    - describe the applicability of BFD Echo in VXLAN environment in the
>    document;
>    - remove Section 7 and clarify in the Introduction
>
> NEW TEXT:
>
> This specification describes procedures only for BFD Asynchronous mode.
>
>
>    - make no changes at all.
>
> Regards,
> Greg
>
>
>