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Title : Head Node Protection Extensions to RSVP-TE for LSP Tunnels
Author(s) : W. Cao, M. Chen
Filename : draft-cao-mpls-te-p2mp-head-protection-00.txt
Pages : 23
Date : 2007-7-5
Protection methods for RSVP-TE P2MP LSP have been discussed by [TE-
FRR]([RFC4090]) and [P2MP-TE-Bypass], but there are no solutions to
protect RSVP-TE P2MP head node. This document discusses the scenario
for RSVP-TE P2MP LSP head node failure protection and describes the
protection procedures. RSVP-TE extension for such protection is also
described.
To protect the head node, a backup head node must be appointed and
take the responsibility to forward the traffic to downstream LSRs of
the protected head node. Generally, the backup head node is not on
the path of protected LSP. Similar to [TE-FRR] there are two methods
can apply: one-to-one backup and facility backup and facility backup.
Only one-to-one backup is described in details, facility backup will
be discussed in future version of this draft.
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