Technical Summary
Resource ReSerVation Protocol-Traffic Engineering provides support
for the communication of exclusion information during label switched
path (LSP) setup. A typical LSP diversity use case is for
protection, where two LSPs should follow different paths through the
network in order to avoid single points of failure, thus greatly
improving service availability. This document specifies an approach
which can be used for network scenarios where full knowledge of the
path(s) is not necessarily known by use of an abstract identifier
for the path. Three types of abstract identifiers are specified:
client-based, Path Computation Engine (PCE)-based, network-based.
This document specifies two new diversity subobjects for the RSVP
eXclude Route Object (XRO) and the Explicit Exclusion Route
Subobject (EXRS).
Working Group Summary
An earlier version of this document failed WG last call. This
version represents a substantial rework, with additional input from
the WG. It now has reasonable support, and no objections.
Document Quality
The base RSVP-TE mechanisms have been implemented. The extensions
defined in this document can coexist with earlier implementations.
Multiple implementors and vendors contributed to this document and
are expected to implement the defined mechanisms.
Personnel
Who is the Document Shepherd for this document? Lou Berger
Who is the Responsible Area Director? Deborah Brungard