Technical Summary
This document describes how RSVP PathErr Messages may be used to
trigger rerouting of MPLS and GMPLS point-to-point TE-LSPs without
first removing LSP state or resources. There are a number of cases
where such rerouting is beneficial, e.g. soft-preemption and
graceful shutdown. This document defines a new reroute-specific
error code to allow for future definition of reroute
application-specific error values.
Working Group Summary
This document was produced by the WG to help resolve issues with
draft-ietf-mpls-soft-preemption. There was a fair degree of support
for the concepts of soft preemption and graceful shutdown, so the
common pieces were removed from draft-ietf-mpls-soft-preemption and
added to this document.
Document Quality
There are currently no implementations of this work. We may assume
from the level of interest in graceful shutdown and soft preemption
that implementations are likely soon.
Personnel
Loa Andersson is the Document Shepherd.
Adrian Farrel is the Responsible Area Director.