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[mpls] I-D Action:draft-ietf-mpls-soft-preemption-11.txt

  • From: Internet-Drafts@ietf.org
  • Date: Tue, 19 Aug 2008 11:15:01 -0700 (PDT)
  • Cc: mpls@ietf.org
  • Delivered-To: mpls@core3.amsl.com
  • X-Original-To: mpls@lists.ietf.org

A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Multiprotocol Label Switching Working Group of the IETF.


	Title           : MPLS Traffic Engineering Soft Preemption
	Author(s)       : D. Maddux, et al.
	Filename        : draft-ietf-mpls-soft-preemption-11.txt
	Pages           : 14
	Date            : 2008-08-19

This document specifies Multiprotocol Label Switching (MPLS) Traffic
Engineering Soft Preemption, a suite of protocol modifications
extending the concept of preemption with the goal of reducing/
eliminating traffic disruption of preempted Traffic Engineering Label
Switched Paths (TE LSPs).  Initially MPLS RSVP-TE was defined
supporting only immediate TE LSP displacement upon preemption.  The
utilization of a reroute request notification helps more gracefully
mitigate the re-route process of preempted TE LSP.  For the brief
period soft preemption is activated, reservations (though not
necessarily traffic levels) are in effect under-provisioned until the
TE LSP(s) can be re-routed.  For this reason, the feature is
primarily but not exclusively interesting in MPLS enabled IP networks
with Differentiated Services and Traffic Engineering capabilities.

A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-mpls-soft-preemption-11.txt

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/

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Internet-Draft.

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