General Network Element Constraint Encoding for GMPLS-Controlled Networks (RFC7579)
Original Publication Date: 2015-Jun-01
Included in the Prior Art Database: 2015-Jun-26
Internet Society Requests For Comment (RFCs)
G. Bernstein: AUTHOR [+6]
Some data-plane technologies that wish to make use of a GMPLS control plane contain additional constraints on switching capability and label assignment. In addition, some of these technologies must perform non-local label assignment based on the nature of the technology, e.g., wavelength continuity constraint in Wavelength Switched Optical Networks (WSONs) [RFC6163]. Such constraints can lead to the requirement for link-by-link label availability in path computation and label assignment.
Internet Engineering Task Force (IETF) G. Bernstein, Ed. Request for Comments: 7579 Grotto Networking Category: Standards Track Y. Lee, Ed. ISSN: 2070-1721 D. Li Huawei W. Imajuku NTT J. Han Huawei June 2015
General Network Element Constraint Encoding for GMPLS-Controlled Networks
Generalized Multiprotocol Label Switching (GMPLS) 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.
Status of This Memo
This is an Internet Standards Track document.
This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 5741.
Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc7579.
al. Standards Track [Page 1]
RFC 7579 General Network Element Constraint Encoding June 2015
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