Multipoint LDP Extensions for Multi-Topology Routing
RFC 9658, “Multipoint LDP Extensions for Multi-Topology Routing”, is a Proposed Standard document published in October 2024 by IJ. Wijnands, M. Mishra, K. Raza, Z. Zhang, A. Gulko. It updates RFC 7307. The canonical text is published by the RFC Editor.
Abstract
Multi-Topology Routing (MTR) is a technology that enables service differentiation within an IP network. The Flexible Algorithm (FA) is another mechanism for creating a sub-topology within a topology using defined topology constraints and computation algorithms. In order to deploy Multipoint LDP (mLDP) in a network that supports MTR, FA, or other methods of signaling non-default IGP Algorithms (IPAs), mLDP is required to become topology and algorithm aware. This document specifies extensions to mLDP to support the use of MTR/IPAs such that, when building multipoint Label Switched Paths (LSPs), the LSPs can follow a particular topology and algorithm. This document updates RFC 7307 by allocating eight bits from a previously reserved field to be used as the "IPA" field.
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 9658 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
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