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Re: [v6ops] Flow Label Load Balancing

Mark Smith <markzzzsmith@gmail.com> Sat, 28 November 2020 06:42 UTC

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From: Mark Smith <markzzzsmith@gmail.com>
Date: Sat, 28 Nov 2020 17:42:20 +1100
Message-ID: <CAO42Z2xqU4gs9iP=u_0Z16Qk+U24_YH0h5vTmJRJ5XZXZ0nweQ@mail.gmail.com>
To: Fernando Gont <fernando@gont.com.ar>
Cc: Tom Herbert <tom@herbertland.com>, IPv6 Operations <v6ops@ietf.org>, tcpm <tcpm@ietf.org>
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Subject: Re: [v6ops] Flow Label Load Balancing
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On Sat, 28 Nov 2020, 14:52 Fernando Gont, <fernando@gont.com.ar> wrote:

> On 27/11/20 21:32, Mark Smith wrote:
> >
> > On Sat, 28 Nov 2020, 10:32 Tom Herbert, <tom@herbertland.com
> > <mailto:tom@herbertland.com>> wrote:
> [....]
> >
> > If hosts start trying to take control of steering traffic by varying the
> > flow label value within a flow, making the network's job harder, and the
> > network being blamed for the possibility bad network performance that
> > may result, the response will be both quick and easy - network operators
> > will switch off looking the Flow Label.
>
> THat is *exactly* why I noted that I'm concerned that we seem to be on
> the path of making the FLow Label unusable.
>

I see the Flow Label as a hint, but only a hint, of what the hosts wants
from the network. It's useful as an expression of what the host would like
to have.

However, if that hint causes me any trouble, I'll ignore it and then
devolve to trying to deliver the packet based just on its destination
address.



> Thanks,
> --
> Fernando Gont
> e-mail: fernando@gont.com.ar || fgont@si6networks.com
> PGP Fingerprint: 7809 84F5 322E 45C7 F1C9 3945 96EE A9EF D076 FFF1
>
>
>
>

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