Title: Multicast Server Architectures for MARS-based ATM multicasting
Author(s): R. Talpade, M. Ammar.
Status: INFORMATIONAL
Date: May 1997
Length: 42007
A mechanism to support the multicast needs of layer 3 protocols in general, and IP in particular, over UNI 3.0/3.1 based ATM networks has been described in RFC2022. Two basic approaches exist for the intra-subnet (intra-cluster) multicasting of IP packets. One makes use of a mesh of point to multipoint VCs (the 'VC Mesh' approach), while the other uses a shared point to multipoint tree rooted on a Multicast Server (MCS). This memo provides details on the design and implementation of an MCS, building on the core mechanisms defined in RFC2022. It also provides a mechanism for using multiple MCSs per group for providing fault tolerance. This approach can be used with RFC2022 based MARS server and clients, without needing any change in their functionality.
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