The MPLS WG Archive

[Jean Philippe Vasseur <jvasseur@cisco.com>]

Hi,

New draft recently posted: draft-vasseur-mpls-linknode-failure-00.txt. Any 
comment is very welcome.

Abstract

The aim of this draft is to provide a method to distinguish a link from
a node failure using RSVP hello extensions. In a network making use of
MPLS Traffic Engineering Fast Reroute as specified in [FAST-REROUTE],
efficient use can be made of the network links when protecting against
link/node failures. As described in [FACILITY], excess capacity used
for bypass tunnels can be shared between bypass tunnels providing
protection for mutually exclusive failures of different links or nodes.
This results in significant bandwidth savings under the single failure
assumption. Making use of the single failure assumption  implies the
need  to distinguish a link from a node failure. However, the
mechanisms currently available for failures detection do not always
allow to distinguishing a link from a node failure.

Thanks.

JP.