Re: [Lsr] LSR: Using DSCP for path/topology selection Q

Rob Shakir <rjs@rob.sh> Fri, 16 November 2018 00:47 UTC

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From: Rob Shakir <rjs@rob.sh>
Date: Thu, 15 Nov 2018 16:47:26 -0800
Message-ID: <CAHxMRebnhYbwBED8Us2ZR7ikJHHs6VBR6ZLy7cCqfyDJ6XVUAw@mail.gmail.com>
To: Toerless Eckert <tte@cs.fau.de>
Cc: Robert Raszuk <robert@raszuk.net>, "Les Ginsberg (ginsberg)" <ginsberg@cisco.com>, lsr@ietf.org
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Archived-At: <https://mailarchive.ietf.org/arch/msg/lsr/K9RPAzQOJgqy2EC4CGbLtpsFDeU>
Subject: Re: [Lsr] LSR: Using DSCP for path/topology selection Q
Precedence: list

On Thu, 15 Nov 2018 at 16:07 Toerless Eckert <tte@cs.fau.de> wrote:

> > And btw I read Peter's note as possibility (or invitation) to define
> > algorithm which takes into account DSCP rather then a announcement that
> > this is not there and it should never be.
>
> Sure, i am only talking about the solutions that tried to use DSCP for
> routing so far. I think those failed. And when other agree and we codify
> that, then that would not exclude the option for new work (like what
> Peter may have in mind) to superceed that recommendation.
>

A number of networks on which I have worked have used DSCP-based tunnel
selection to choose between RSVP-TE LSPs. This essentially is different
routing based on DSCP, which seems to be something that you're trying to
cover -- is that correct?

If so, given that these are running in real networks, I find it hard to
conclude that any IETF standard should declare them as failed.

r.

[Lsr] LSR: Using DSCP for path/topology selection… Toerless Eckert
Re: [Lsr] LSR: Using DSCP for path/topology selec… Les Ginsberg (ginsberg)
Re: [Lsr] LSR: Using DSCP for path/topology selec… Peter Psenak
Re: [Lsr] LSR: Using DSCP for path/topology selec… Toerless Eckert
Re: [Lsr] LSR: Using DSCP for path/topology selec… Robert Raszuk
Re: [Lsr] LSR: Using DSCP for path/topology selec… Toerless Eckert
Re: [Lsr] LSR: Using DSCP for path/topology selec… Robert Raszuk
Re: [Lsr] LSR: Using DSCP for path/topology selec… Rob Shakir
Re: [Lsr] LSR: Using DSCP for path/topology selec… Jeff Tantsura
Re: [Lsr] LSR: Using DSCP for path/topology selec… Tony Li
Re: [Lsr] LSR: Using DSCP for path/topology selec… Jeff Tantsura
Re: [Lsr] LSR: Using DSCP for path/topology selec… Robert Raszuk
Re: [Lsr] LSR: Using DSCP for path/topology selec… Jeff Tantsura
Re: [Lsr] LSR: Using DSCP for path/topology selec… Toerless Eckert
Re: [Lsr] LSR: Using DSCP for path/topology selec… Toerless Eckert
Re: [Lsr] LSR: Using DSCP for path/topology selec… Uma Chunduri
Re: [Lsr] LSR: Using DSCP for path/topology selec… Dongjie (Jimmy)
Re: [Lsr] LSR: Using DSCP for path/topology selec… Dongjie (Jimmy)
Re: [Lsr] LSR: Using DSCP for path/topology selec… Acee Lindem (acee)
Re: [Lsr] LSR: Using DSCP for path/topology selec… adrian
Re: [Lsr] LSR: Using DSCP for path/topology selec… Les Ginsberg (ginsberg)
Re: [Lsr] LSR: Using DSCP for path/topology selec… Alexander Vainshtein