Technical Summary
A wavelength switched optical network (WSON) requires that certain
key information fields are made available to facilitate path
computation and the establishment of label switching paths (LSPs).
The information model described in "Routing and Wavelength
Assignment Information for Wavelength Switched Optical Networks"
shows what information is required at specific points in the WSON.
Part of the WSON information model contains aspects that may be of
general applicability to other technologies, while other parts are
specific to WSONs.
This document provides efficient, protocol-agnostic encodings for
the WSON-specific information fields. It is intended that protocol-
specific documents will reference this memo to describe how
information is carried for specific uses. Such encodings can be used
to extend GMPLS signaling and routing protocols. In addition these
encodings could be used by other mechanisms to convey this same
information to a path computation element (PCE).
Working Group Summary
This topic been discussed in the WG for a very long time, perhaps 6
years. Support for the work has been tepid, but there are multiple
sets of contributors who would like to see the work result in proposed
standards.
A late discussion about the inclusion of vendor-specific information
went back to the WG list and resulted in the removal of such TLVs
until the ITU-T has completed its work in this area.
Document Quality
This document provides background and an approach to extending
exiting RFCs for which there are implementations, but does not
itself define any protocol mechanisms. The existing RFCs include
RFC3471, RFC3473, RFC4202, RFC4203. This work is based on RFC6163.
Personnel
Lou Berger is the Document Shepherd
Adrian Farrel is the Responsible Area Director