Re: [Isis-wg] Benoit Claise's No Objection on draft-ietf-isis-sbfd-discriminator-02: (with COMMENT)

"Alvaro Retana (aretana)" <aretana@cisco.com> Wed, 18 November 2015 18:12 UTC

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From: "Alvaro Retana (aretana)" <aretana@cisco.com>
To: "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>, "Benoit Claise (bclaise)" <bclaise@cisco.com>, The IESG <iesg@ietf.org>
Thread-Topic: [Isis-wg] Benoit Claise's No Objection on draft-ietf-isis-sbfd-discriminator-02: (with COMMENT)
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Date: Wed, 18 Nov 2015 18:11:58 +0000
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Subject: Re: [Isis-wg] Benoit Claise's No Objection on draft-ietf-isis-sbfd-discriminator-02: (with COMMENT)
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On 11/18/15, 12:47 PM, "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>
wrote:

Les:

>Neither IS-IS nor OSPF are the "application" here. We are simply the
>transport for an opaque piece of information. It makes no sense to me to
>ask the IGPs to clarify what is an issue between S-BFD and an application.

What you say makes sense.

It also makes sense to me that one could argue that since we're
transporting opaque information we could also include an extra piece of
opaque information to let someone else know what the first piece was for.
Note that I'm offering that scenario just as an example of the fact that
there are at least a couple of potential interpretations.

Because of the language used in the Base S-BFD draft (where it does call
OSPF/IS-IS an "application", [1]), I just want to play it safe and make
sure we're not pointing at each other and that result won't be that no one
does the mapping.

Thanks!

Alvaro.


[1]

   session.  Allocated S-BFD discriminators may be advertised by
   applications (e.g., OSPF/IS-IS).  Required result is that
   applications, on other network nodes, possess the knowledge of the
   mapping from remote entities to S-BFD discriminators.  The reflector