The MPLS WG Archive

[Dan Tappan <tappan@cisco.com>]

At 11:52 PM 9/24/2001 +0100, Giles Heron wrote:
>Henry Bibb wrote:
> >
> > When MPLS-labeled packets are tunneled in IP, how does a
> > router distinguish whether a given IP packet has an MPLS
> > label stack or not?  In draft-worster-mpls-in-ip-05.txt,
> > mention is made of setting up two new values for the IPv4
> > protocol field to distinguish MPLS labelled packets, but
> > there appears to be no actual code point assigned for this yet.
>
>There's also a proposal for MPLS in GRE - for which no code point needs
>to be assigned.  I think it has expired though?  It was
>draft-rekhter-mpls-over-gre-01.txt.
>
> > So, what does deployed equipment do?
>
>I'm not sure much equipment has been deployed yet that supports either
>draft?


I know of shipping implementations which support MPLS/GRE. I don't know of 
any that support MPLS/IP.

>Giles
>
> > Thanks,
> > Henry Bibb
> > Hatteras Networks, Inc.
> > hbibb@hatterasnetworks.com
> >
> > 
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>--
>=================================================================
>Giles Heron    Principal Network Architect    PacketExchange Ltd.
>ph: +44 7880 506185              "if you build it they will yawn"
>=================================================================