A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : LSP Preemption policies for Diff-Serv-aware MPLS
Traffic Engineering
Author(s) : J. de Oliveira et al.
Filename : draft-deoliveira-diff-te-preemption-01.txt
Pages : 0
Date : 2003-3-21
When the establishment of a higher priority LSP requires the preemption
of a set of lower priority LSPs, a node has to make a local decision
on the set of preemptable LSPs and select which LSPs will be preempted,
based on a certain objective, in order to accomodate the newly signaled
high priority LSP. The preempted LSPs are then rerouted. This draft
documents a preemption policy which can be modified in order to stress
different objectives: preempt the lowest priority LSPs, preempt the
minimum number of LSPs, preempt the exact required bandwidth in order
to fit the new LSP. Simulation results are given and a comparison among
several different policies, with respect to preemption cascading, number
of preempted LSPs, priority and wasted bandwidth is also included.
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