The IESG has approved the following document: - 'General Network Element Constraint Encoding for GMPLS Controlled Networks' (draft-ietf-ccamp-general-constraint-encode-20.txt) as Proposed Standard This document is the product of the Common Control and Measurement Plane Working Group. The IESG contact persons are Alia Atlas and Adrian Farrel. A URL of this Internet Draft is: http://datatracker.ietf.org/doc/draft-ietf-ccamp-general-constraint-encode/ Technical Summary Generalized Multiprotocol Label Switching can be used to control a wide variety of technologies. In some of these technologies, network elements and links may impose additional routing constraints such as asymmetric switch connectivity, non-local label assignment, and label range limitations on links. This document provides efficient, protocol-agnostic encodings for general information elements representing connectivity and label constraints as well as label availability. It is intended that protocol-specific documents will reference this memo to describe how information is carried for specific uses. Working Group Summary This topic has 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. This document was updated after detailed reviews by the document shepherd and responsible AD. 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. A number of subsequent documents related to signalling and routing for Wavelength Switched Optical Networks (WSON) have dependencies on the generic mechanisms defined in this document. Personnel Lou Berger is the document Shepherd. Adrian Farrel is the Responsible Area Director.
