%% You should probably cite draft-jjwl-mpls-mldp-hsmp instead of this I-D. @techreport{jin-jounay-mpls-mldp-hsmp-05, number = {draft-jin-jounay-mpls-mldp-hsmp-05}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-jin-jounay-mpls-mldp-hsmp/05/}, author = {Lizhong Jin and Frederic JOUNAY and IJsbrand Wijnands and Nicolai Leymann}, title = {{Multicast LDP extension for hub \& spoke multipoint LSP}}, pagetotal = 13, year = 2012, month = may, day = 5, abstract = {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. A packet traveling upstream should be thought of as being unicast to the root, except that it follows the path of the tree rather than ordinary unicast path.}, }