LDP extension for AII reachability

Document Type Expired Internet-Draft (individual)
Authors Luca Martini  , Philippe Niger  , Matthew Bocci  , Yaakov Stein  , Simon DeLord 
Last updated 2008-09-22
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


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.


Luca Martini (lmartini@cisco.com)
Philippe Niger (philippe.niger@orange-ftgroup.com)
Matthew Bocci (matthew.bocci@alcatel-lucent.co.uk)
Yaakov Stein (yaakov_s@rad.com)
Simon DeLord (simon.delord@francetelecom.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)