Controlling State Advertisements of Non-negotiated LDP Applications (RFC7473)
Original Publication Date: 2015-Mar-01
Included in the Prior Art Database: 2015-Mar-12
Internet Society Requests For Comment (RFCs)
K. Raza: AUTHOR [+2]
The LDP Capabilities specification [RFC5561] introduced a mechanism to negotiate LDP capabilities for a given feature between peer Label Switching Routers (LSRs). The capability mechanism ensures that no unnecessary state is exchanged between peer LSRs unless the corresponding feature capability is successfully negotiated between the peers.
Internet Engineering Task Force (IETF) K. Raza Request for Comments: 7473 S. Boutros Category: Standards Track Cisco Systems, Inc. ISSN: 2070-1721 March 2015
Controlling State Advertisements of Non-negotiated LDP Applications
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.
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/rfc7473.
Raza & Boutros Standards Track [Page 1]
RFC 7473 State Adv. Control of Non-negotiated Apps March 2015
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Table of Contents
1. Introduction ........................................