LDP Extensions for Hub & Spoke Multipoint Label Switched Path

The information below is for an old version of the document
Document Type Expired Internet-Draft (mpls WG)
Authors Lizhong Jin  , Frederic JOUNAY  , IJsbrand Wijnands  , Nicolai Leymann 
Last updated 2013-03-24 (latest revision 2012-09-20)
Replaces draft-jjwl-mpls-mldp-hsmp
Stream Internet Engineering Task Force (IETF)
Expired & archived
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IESG IESG state Expired
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This draft introduces a hub & spoke multipoint LSP (short for HSMP LSP), which allows traffic both from root to leaf through P2MP LSP and also leaf to root along the co-routed reverse path. That means traffic entering the HSMP LSP from application/customer at the root node travels downstream, exactly as if it was traveling downstream along a P2MP LSP to each leaf node, and traffic entering the HSMP LSP at any leaf node travels upstream along the tree to the root as if it is unicast to the root, except that it follows the path of the tree rather than ordinary unicast to the root.


Lizhong Jin (lizhong.jin@zte.com.cn)
Frederic JOUNAY (frederic.jounay@orange.ch)
IJsbrand Wijnands (ice@cisco.com)
Nicolai Leymann (n.leymann@telekom.de)

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