A New Internet-Draft is available from the on-line Internet-Drafts
directories.
Title : LSP Preemption Policies for MPLS Traffic Engineering
Author(s) : J. de Oliveira, et al.
Filename : draft-deoliveira-diff-te-preemption-06.txt
Pages : 19
Date : 2006-11-28
When the establishment of a higher priority (Traffic Engineering
Label Switched Path) TE LSP requires the preemption of a set of lower
priority TE LSPs, a node has to make a local decision to select which
TE LSPs will be preempted. The preempted LSPs are then rerouted by
their respective Head-end Label Switch Router (LSR). This document
presents a flexible policy that can be used to achieve different
objectives: preempt the lowest priority LSPs; preempt the minimum
number of LSPs; preempt the set of TE LSPs that provide the closest
amount of bandwidth to the required bandwidth for the preempting TE
LSPs (to minimize bandwidth wastage); preempt the LSPs that will have
the maximum chance to get rerouted. Simulation results are given and
a comparison among several different policies, with respect to
preemption cascading, number of preempted LSPs, priority, wasted
bandwidth and blocking probability is also included.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-deoliveira-diff-te-preemption-06.txt