Re: I-D ACTION:draft-ietf-ccamp-crankback-03.txt

["Adrian Farrel" <adrian@olddog.co.uk>]

The changes in this version are trivial (boilerplate and typos).

Thanks,
Adrian
----- Original Message ----- 
From: <Internet-Drafts@ietf.org>
To: <i-d-announce@ietf.org>
Cc: <ccamp@ops.ietf.org>
Sent: Friday, October 08, 2004 8:33 PM
Subject: I-D ACTION:draft-ietf-ccamp-crankback-03.txt


> A New Internet-Draft is available from the on-line Internet-Drafts directories.
> This draft is a work item of the Common Control and Measurement Plane Working Group of
the IETF.
>
> Title : Crankback Signaling Extensions for MPLS Signaling
> Author(s) : A. Farrel, et al.
> Filename : draft-ietf-ccamp-crankback-03.txt
> Pages : 31
> Date : 2004-10-8
>
> In a distributed, constraint-based routing environment, the
>    information used to compute a path may be out of date. This means
>    that Multiprotocol Label Switching (MPLS) label switched path (LSP)
>    setup requests may be blocked by links or nodes without sufficient
>    resources. Crankback is a scheme whereby setup failure information is
>    returned from the point of failure to allow new setup attempts to be
>    made avoiding the blocked resources. Crankback can also be applied to
>    LSP restoration to indicate the location of the failed link or node.
>
>    This document specifies crankback signaling extensions for use in
>    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 blocked links or
>    nodes. This offers significant improvements in the successful setup
>    and recovery ratios for LSPs, especially in situations where a large
>    number of setup requests are triggered at the same time.
>
> A URL for this Internet-Draft is:
> http://www.ietf.org/internet-drafts/draft-ietf-ccamp-crankback-03.txt
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