Label Switched Paths Hierarchy with Generalized Multi-Protocol Label Switching Traffic Engineering
RFC 4206, “Label Switched Paths Hierarchy with Generalized Multi-Protocol Label Switching Traffic Engineering”, is a Proposed Standard document published in October 2005 by K. Kompella, Y. Rekhter. It has since been updated by RFC 6001, RFC 6107. The canonical text is published by the RFC Editor.
Abstract
To improve scalability of Generalized Multi-Protocol Label Switching (GMPLS) it may be useful to aggregate Label Switched Paths (LSPs) by creating a hierarchy of such LSPs. A way to create such a hierarchy is by (a) a Label Switching Router (LSR) creating a Traffic Engineering Label Switched Path (TE LSP), (b) the LSR forming a forwarding adjacency (FA) out of that LSP (by advertising this LSP as a Traffic Engineering (TE) link into the same instance of ISIS/OSPF as the one that was used to create the LSP), (c) allowing other LSRs to use FAs for their path computation, and (d) nesting of LSPs originated by other LSRs into that LSP (by using the label stack construct).
This document describes the mechanisms to accomplish this. [PROPOSED STANDARD]
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 4206 is hosted at rfc-editor.org. Available in TXT,HTML.
- RFC 4205 Intermediate System to Intermediate System Extensions in Support of Generalized Multi-Protocol Label Switching
- RFC 4207 Synchronous Optical Network /Synchronous Digital Hierarchy Encoding for Link Management Protocol Test Messages
- RFC 4204 Link Management Protocol
- RFC 4208 Generalized Multiprotocol Label Switching User-Network Interface : Resource ReserVation Protocol-Traffic Engineering Support for the Overlay Model
- RFC 4203 OSPF Extensions in Support of Generalized Multi-Protocol Label Switching
- RFC 4209 Link Management Protocol for Dense Wavelength Division Multiplexing Optical Line Systems
- RFC 4202 Routing Extensions in Support of Generalized Multi-Protocol Label Switching
- RFC 4210 Internet X.509 Public Key Infrastructure Certificate Management Protocol