LDP Extensions for Hub & Spoke Multipoint Label Switched Path

Document Type Replaced Internet-Draft (individual)
Authors Lizhong Jin  , Frederic JOUNAY  , IJsbrand Wijnands  , Nicolai Leymann 
Last updated 2012-10-10 (latest revision 2012-09-03)
Replaces draft-jin-jounay-mpls-mldp-hsmp
Replaced by RFC 7140
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-hsmp
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This Internet-Draft is no longer active.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.)