I-D ACTION:draft-delord-jounay-pwe3-ldp-aii-reachability-02.txt

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	Title		: LDP extension for AII reachability
	Author(s)	: L. Martini, P. Niger, Y. Stein, F. JOUNAY, M. Bocci, S. DeLord
	Filename	: draft-delord-jounay-pwe3-ldp-aii-reachability-02.txt
	Pages		: 11
	Date		: 2008-9-22
	
The dynamic End-to-End Multisegment pseudowire setup requires PEs to    
   maintain a pseudowire routing table when using FEC129. There is a 
   requirement to automatically advertise Attachment Individual    
   Identifiers to enable the pseudowire routing tables to be populated. 
   Two mechanisms already exist, a BGP reachability information 
   distribution mechanism and an IGP based one. Here we define a third 
   solution relying on LDP. It allows for automatic advertisement of the 
   Attachment Individual Identifier prefixes provisioned on a T-PE when 
   this node does not run BGP or IGP. The mechanism described here runs 
   on the T-LDP (Targeted LDP) session between the T-PE and S-PE, and  
   is intended to complement existing PW routing mechanisms using BGP or 
   OSPF.

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