Name: draft-boudani-mpls-multicast-tree-06
Title: An Effective Solution for Multicast Scalability:The MPLS Multicast Tree (MMT)
State: Active
Authors: Ali Boudani
Group: Individual Submissions (none)
Date: 2004-10-11
A multicast router should keep forwarding state for every multicast tree
passing through it. The number of forwarding states grows with the number
of groups. In this paper, we present a new approach, the MPLS multicast
Tree (MMT), which utilizes MPLS LSPs between multicast tree branching node
routers in order to reduce forwarding states and enhance scalability. In
our approach only routers that are acting as multicast tree branching node
routers for a group need to keep forwarding state for that group. All other
non- branching node routers simply forward data packets by traffic
engineered unicast routing using MPLS LSPs. We can deduce that our approach
can be largely deployed because it uses for multicast traffic the same
unicast MPLS forwarding scheme. We will briefly discuss the multicast
scalability problem, related works and different techniques for forwarding
state reduction. We discuss also the advantages of our approach, and
conclude that it is feasible and promising. Finally, we analytically
evaluate our approach.
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