The MPLS WG Archive

["Kameswara Rao Avasarala" <kameswara.rao@ericsson.com>]

Hi,
   What is the application of tunneling mpls over ip ? Since LSP's cannot be
established through a non-mpls domain and the egress lsr's anyway perform
the transformation from mpls->ip .
Kamesh.

Kameswara Rao Avasarala
Software Engineer
Ericsson Inc
Telephone:
Work:805-562-6212
Resi: 805-562-8841




-----Original Message-----
From: owner-mpls@UU.NET [mailto:owner-mpls@UU.NET]On Behalf Of Henry
Bibb
Sent: Monday, September 24, 2001 11:01 AM
To: 'mpls@uu.net'
Subject: MPLS tunneled in IP


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.

So, what does deployed equipment do?

Thanks,
Henry Bibb
Hatteras Networks, Inc.
hbibb@hatterasnetworks.com




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