I-D ACTION:draft-farrel-mpls-ldp-ft-00.txt

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	Title		: Fault Tolerance for LDP and CR-LDP
	Author(s)	: A. Farrel, P. Brittain
	Filename	: draft-farrel-mpls-ldp-ft-00.txt
	Pages		: 28
	Date		: 16-Feb-00
	
MPLS systems will be used in core networks where system downtime 
must be kept to an absolute minimum.  Many MPLS LSRs may, therefore, 
exploit Fault Tolerant (FT) hardware or software to provide 
high-availability of the core networks.  
The details of how FT is achieved for the various components of an FT 
LSR, including LDP, CR-LDP, the switching hardware and TCP, are 
implementation specific.  This document identifies issues in the 
CR-LDP specification [2] and the LDP specification [4] that make it 
difficult to implement an FT LSR using the current LDP and CR-LDP 
protocols, and proposes enhancements to the LDP specification to ease 
such FT LSR implementations.  
The extensions described here are equally applicable to CR-LDP.

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