Using mLDP through a Backbone where there is no Route to the Root

Document Type Replaced Internet-Draft (individual)
Authors IJsbrand Wijnands  , Eric Rosen  , Maria Napierala  , Nicolai Leymann 
Last updated 2010-04-16
Replaced by RFC 6512
Stream (None)
Intended RFC status (None)
Expired & archived
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Stream Stream state (No stream defined)
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IESG IESG state Replaced by draft-ietf-mpls-mldp-recurs-fec
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


The control protocol used for constructing Point-to-Multipoint and Multipoint-to-Multipoint Label Switched Paths ("MP LSPs") contains a field that identifies the address of a "root node". Intermediate nodes are expected to be able to look up that address in their routing tables. However, if the route to the root node is a BGP route, and the intermediate nodes are part of a BGP-free core, this is not possible. This document specifies procedures which enable a MP LSP to be constructed through a BGP-free core. In these procedures, the root node address is temporarily replaced by an address which is known to the intermediate nodes.


IJsbrand Wijnands (
Eric Rosen (
Maria Napierala (
Nicolai Leymann (

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