Multicast Tree in Mpls Network Using Mmt and Mmt2 Protocols Ali Boudani and Bernard Cousin

In this paper, we study multicast tree construction in MPLS network. We discuss the difficulty in combining multicast and MPLS in a network. We describe some MPLS proposals for the multicast traffic and we justify the need for defining a new protocol. Thereafter we propose MMT, the MPLS Multicast Tree protocol, which uses MPLS LSP** between multicast tree branching nodes in order to reduce the routing states and to increase scalability. We present improvements to MMT protocol and we evaluate it in term of scalability and efficiency. Finally, we present simulation results to validate our evaluation and we conclude that the MMT protocol seems promising and well adapted to a possible implementation of multicast traffic engineering in the network. Key-words: Internet, High speed networks, MPLS, Multicast, Traffic Engineering