OSPF-TE Extensions for General Network Element Constraints
RFC 7580, “OSPF-TE Extensions for General Network Element Constraints”, is a Proposed Standard document published in June 2015 by F. Zhang, Y. Lee, J. Han, G. Bernstein, Y. Xu. The canonical text is published by the RFC Editor.
Abstract
Generalized Multiprotocol Label Switching (GMPLS) can be used to control a wide variety of technologies including packet switching (e.g., MPLS), time division (e.g., Synchronous Optical Network / Synchronous Digital Hierarchy (SONET/SDH) and Optical Transport Network (OTN)), wavelength (lambdas), and spatial switching (e.g., incoming port or fiber to outgoing port or fiber). 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 describes Open Shortest Path First (OSPF) routing protocol extensions to support these kinds of constraints under the control of GMPLS.
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 7580 is hosted at rfc-editor.org. Available in TXT,HTML.
- RFC 7579 General Network Element Constraint Encoding for GMPLS-Controlled Networks
- RFC 7581 Routing and Wavelength Assignment Information Encoding for Wavelength Switched Optical Networks
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