This document provides an informational clarification of the
control plane procedures for a Generalized MPLS (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.
Working Group Summary
There were no problems with consensus for this document (see PROTO
writeup by Deborah Brungard). There was some debate about the need
for this work. It was suggested that all of the necessary explanation
of the operation of graceful restart was included in RFC 5063.
However, repeated questions about how to use the protocol extensions
in corner cases and double faliure scenarios makes this work valuable.
This document has been reviewed by the CCAMP working group and
received some comments at IETF meetings and on the mailing list.
Most importantly it has had input from the authors of RFC 5063
that documents the protocol procedures. It has also been updated
in response to Gen-Art review. There are several implementations
of the graceful restart processes described in RFC 5063. Experience
from these implementations has provided valuable input to this
Deborah Brungard is the Document Shepherd for this document. Ross
Callon is the Responsible Area Director. There are no IANA actions.