Re: [Idr] Unknown Attributes seen in the wild

Robert Raszuk <robert@raszuk.net> Sun, 30 October 2016 18:26 UTC

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From: Robert Raszuk <robert@raszuk.net>
Date: Sun, 30 Oct 2016 19:25:56 +0100
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To: Job Snijders <job@ntt.net>
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Subject: Re: [Idr] Unknown Attributes seen in the wild
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Hi Job,

Yes the last two are exactly as defined by this draft. There is an effort
in place to update it and resubmit in IETF. Perhaps to BESS.

Thx,
r.

On Sun, Oct 30, 2016 at 7:22 PM, Job Snijders <job@ntt.net>; wrote:

> On Sun, Oct 30, 2016 at 07:05:49PM +0100, Robert Raszuk wrote:
> > > Perhaps this is some internal SDN thing that leaked publicly ?
> >
> > You are right ... attribute 243 is Contrail's OriginVnPath attribute
> > useful for more complex service chaining scenarios.
> >
> > https://github.com/Juniper/contrail-controller/blob/
> 82cdb6afee49b39e54364f18be8eeca725dd76f4/src/bgp/bgp_attr_base.h
>
> So this is a case of path attribute squatting, with code deployed in the
> wild?
>
> > With that let's also not forget about attributes 241 and 242 used for
> > multicast edge replication. The work on draft describing those last two
> > temporarily allocated attribute codes is currently being resubmitted. The
> > good news is that they should not be leaked as they are to be send in
> their
> > dedicated SAFIs so unless peer exchanges right capabilities they should
> be
> > quite contained.
> >
> > https://github.com/Juniper/contrail-controller/blob/
> 82cdb6afee49b39e54364f18be8eeca725dd76f4/src/net/bgp_af.h
>
> Would this be a (partial?) implementation of
> https://tools.ietf.org/html/draft-marques-l3vpn-mcast-edge-01 or is
> there another draft?
>
> Kind regards,
>
> Job
>