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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)	: M. Meyer et al.
	Filename	: draft-ietf-mpls-soft-preemption-00.txt
	Pages		: 9
	Date		: 2003-4-18
	
This draft documents MPLS TE Soft Preemption, a suite of protocol 
modifications extending the current concept of preemption with the goal 
of reducing/eliminating traffic disruption of preempted TE LSPs.  Under 
present RSVP-TE signaling methods, LSPs are immediately displaced upon 
preemption.  The introduction of a new preemption pending flag helps 
more gracefully mitigate the re-route process of displaced LSPs.  For 
the brief period soft preemption is activated, reservations (though not 
necessarily traffic levels) are in effect overbooked until the LSP can 
be re-routed.  For this reason, the feature is primarily interesting in 
packet oriented MPLS networks with Diffserv and TE capabilities.

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