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ISIS Extensions to support U-turn Alternates for IP/LDP Fast-Reroute

Document Type Expired Internet-Draft (individual)
Expired & archived
Author Alia Atlas
Last updated 2006-03-06
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Expired
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


This document specifies additional information that can inserted in IS-IS LSPs to convey link capabilities that may be useful in certain applications. In particular, an IS may convey that zero or more of its links are explicit marked and/or implicit U-turn recipient capable, which may be described as capable of identifying traffic as U-turn traffic and redirecting the traffic to a suitable alternate. The immediate applicability for these two link capabilities is in support of local protection, provided by a U-turn alternate, in the event of a link and/or node failure while the IS-IS area is reconverging onto a new topology.


Alia Atlas

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)