Abstract
Multicast support in a Multiprotocol Label Switching (MPLS) network has yet to be defined. An MPLS network consists of label switching devices such as ATM. This document discusses both dense-mode and sparse-mode native IP multicast within the context of MPLS networks. Unlike unicast routing, dense-mode multicast routing trees are established in a data-driven manner and it is not possible to topologically aggregate such trees, which are rooted at different sources. In sparse-mode multicast, source-specific trees may coexist with a core or shared tree, and it is not possible to assign a common label to traffic from different sources on a branch of the shared tree. This leads us to suggest a per-source traffic-driven label allocation scheme for supporting all three types of multicast (dense mode, shared tree, source tree) routing trees in a MPLS network. Note that we focus on native multicast support and that our scheme is not to be applied when MPLS-based tunnels are appropriate, for instance to support multicast in MPLS-based VPN.
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References
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© 1999 Springer-Verlag Berlin Heidelberg
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Acharya, A., Griffoul, F. (1999). Native IP Multicast Support in MPLS. In: Rizzo, L., Fdida, S. (eds) Networked Group Communication. NGC 1999. Lecture Notes in Computer Science, vol 1736. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-46703-8_13
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DOI: https://doi.org/10.1007/978-3-540-46703-8_13
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