Description of the RSVP-TE Graceful Restart Procedures
draft-li-ccamp-gr-description-00

Document Type Replaced Internet-Draft (individual)
Last updated 2007-08-14 (latest revision 2007-06-19)
Replaced by draft-ietf-ccamp-gr-description
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at
https://www.ietf.org/archive/id/draft-li-ccamp-gr-description-00.txt

Abstract

The Hello message for the Resource Reservation Protocol (RSVP) has been defined to establish and maintain basic signaling node adjacencies for Label Switching Routers (LSRs) participating in a Multiprotocol Label Switching (MPLS) traffic engineered (TE) network. The Hello message has been extended for use in Generalized MPLS (GMPLS) network for state recovery of control channel or nodal faults. GMPLS protocol definitions for RSVP also allow a restarting node to learn the label that it previously allocated for use on a Label Switching Path (LSP). Further RSVP protocol extensions have been defined to enable a restarting node to recover full control plane state by exchanging RSVP messages with its upstream and downstream neighbors. This document provides an informational clarification of the control plane procedures for a GMPLS network when there are multiple node failures, and describes how full control plane state can be recovered in different scenarios where the order in which the nodes restart is different. This document does not define any new processes or procedures. All protocol mechanisms are already defined in the referenced documents.

Authors

Dan Li (danli@huawei.com)

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