I-D Action:draft-ietf-mpls-soft-preemption-17.txt
Internet-Drafts@ietf.org Mon, 18 May 2009 09:30 UTC
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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) : D. Maddux, et al. Filename : draft-ietf-mpls-soft-preemption-17.txt Pages : 14 Date : 2009-05-18 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-17.txt Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ Below is the data which will enable a MIME compliant mail reader implementation to automatically retrieve the ASCII version of the Internet-Draft.
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