Controlling State Advertisements of Non-negotiated LDP Applications
RFC 7473, “Controlling State Advertisements of Non-negotiated LDP Applications”, is a Proposed Standard document published in March 2015 by K. Raza, S. Boutros. It has since been updated by RFC 8223. The canonical text is published by the RFC Editor.
Abstract
There is no capability negotiation done for Label Distribution Protocol (LDP) applications that set up Label Switched Paths (LSPs) for IP prefixes or that signal point-to-point (P2P) Pseudowires (PWs) for Layer 2 Virtual Private Networks (L2VPNs). When an LDP session comes up, an LDP speaker may unnecessarily advertise its local state for such LDP applications even when the peer session is established for some other applications like Multipoint LDP (mLDP) or the Inter-Chassis Communication Protocol (ICCP). This document defines a solution by which an LDP speaker announces to its peer its disinterest in such non-negotiated applications, thus disabling the unnecessary advertisement of corresponding application state, which would have otherwise been advertised over the established LDP session.
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 7473 is hosted at rfc-editor.org. Available in TXT,HTML.
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