The MPLS WG Archive

["Adrian Farrel" <afarrel@movaz.com>]

Hi,

This poor old draft is still looking for a home.
It looks increasingly that the interest is in CCAMP since
- that is where the ASON work is going on
- the draft now uses protocol extensions from RFC3471/3

In summary, we have moved crankback over to use the IF_ID Error Spec rather than
special new objects.

The draft as currently structured provides a problem statement and a solution.
We would welcome opinions about either half (or both).

Adrian

----- Original Message -----
From: <Internet-Drafts@ietf.org>
To: <IETF-Announce: ;>
Cc: <mpls@uu.net>; <ccamp@ops.ietf.org>
Sent: Tuesday, June 17, 2003 7:56 AM
Subject: I-D ACTION:draft-iwata-mpls-crankback-06.txt


> A New Internet-Draft is available from the on-line Internet-Drafts
directories.
>
>
> Title : Crankback Signaling Extensions for MPLS Signaling
> Author(s) : A. Farrel, A. Iwata et al.
> Filename : draft-iwata-mpls-crankback-06.txt
> Pages : 30
> Date : 2003-6-16
>
> Recently, several routing protocol extensions for
> advertising resource information in addition to topology
> information have been proposed for use in distributed
> constraint-based routing.  In such a distributed routing
> environment, however, the information used to compute a
> constraint-based path may be out of date.  This means
> that LSP setup requests may be blocked by links or nodes
> without sufficient resources.
> This draft specifies crankback routing extensions for use
> in Multi-Protocol Label Switching (MPLS) signaling using
> RSVP-TE as defined in 'RSVP-TE: Extensions to RSVP for
> LSP Tunnels', RFC3209, so that the LSP setup request can
> be retried on an alternate path that detours around the
> blocked link or node upon a setup failure.
>
> A URL for this Internet-Draft is:
> http://www.ietf.org/internet-drafts/draft-iwata-mpls-crankback-06.txt
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