A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Path Computation Model for Recovery LSPs Using External PCE
Author(s) : N. Ogino
Filename : draft-ogino-pce-recovery-pc-model-00.txt
Pages : 10
Date : 2004-10-1
This document proposes a PC model, where the recovery LSP route in a
domain is computed using an external PCE. Recovery LSP computation
that promotes bandwidth sharing between other recovery LSPs requires
unreserved bandwidth information that corresponds to each failure
position or SRLG. However, the present IGP-TE can only advertise
unreserved bandwidth information corresponding to eight priority
classes to each LSR involved in an IGP area. An external PCE in a
domain can compute efficient recovery LSP routes by exclusively
preserving such unreserved bandwidth information without any
extension of the present IGP-TE.
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