An MPLS Broadcast Mechanism and Its Extension for Dense-Mode Multicast Support
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- Samadian-Barzoki S., Mohammadi M.B., Yazdani N. (2003) An MPLS Broadcast Mechanism and Its Extension for Dense-Mode Multicast Support. In: Kahng HK. (eds) Information Networking. ICOIN 2003. Lecture Notes in Computer Science, vol 2662. Springer, Berlin, Heidelberg
Due to the increasing multicast applications and high desire for its deployment, it seems that any new technology should support multicast. However; MPLS technology which enhances IP packet forwarding capability by using layer 2 switching still does not offer any special solution for multicast support. The main difficulty in supporting dense-mode multicast protocols like DVMRP and PIM-DM is lack of a broadcast mechanism in MPLS. We propose a genuine broadcast mechanism for MPLS in this paper. First, the proposed mechanism is based on a central broadcast label assigner called BLAC (Broadcast Label Assignment Center). Then, we propose a new dense-mode multicast protocol for MPLS as an extension to our broadcast mechanism. Our method consumes fewer labels compared to the existing proposals supporting dense-mode multicast groups and has smaller forwarding tables.
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