RFC 3213 (rfc3213) - Page 1 of 7
Applicability Statement for CR-LDP
Alternative Format: Original Text Document
Network Working Group J. Ash
Request for Comments: 3213 AT&T
Category: Informational M. Girish
Atoga Systems
E. Gray
Sandburst
B. Jamoussi
G. Wright
Nortel Networks Corp.
January 2002
Applicability Statement for CR-LDP
Status of this Memo
This memo provides information for the Internet community. It does
not specify an Internet standard of any kind. Distribution of this
memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2002). All Rights Reserved.
Abstract
This document discusses the applicability of Constraint-Based LSP
Setup using LDP. It discusses possible network applications,
extensions to Label Distribution Protocol (LDP) required to implement
constraint-based routing, guidelines for deployment and known
limitations of the protocol. This document is a prerequisite to
advancing CR-LDP on the standards track.
1. Introduction
As the Internet evolves, additional capabilities are required to
ensure proper treatment of data [3], voice, video and other delay
sensitive traffic [4]. MPLS enhances source routing and allows for
certain techniques, used in circuit switching, in IP networks. This
permits a scalable approach to handling these diverse transmission
requirements. CR-LDP [1] is a simple, scalable, open, non-
proprietary, traffic engineering signaling protocol for MPLS IP
networks.
CR-LDP provides mechanisms for establishing explicitly routed Label
Switched Paths (LSPs). These mechanisms are defined as extensions to
LDP [2]. Because LDP is a peer-to-peer protocol based on the
Ash, et al Informational