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Virtual circuit manager for multicast messaging

  • US 5,511,168 A
  • Filed: 07/01/1993
  • Issued: 04/23/1996
  • Est. Priority Date: 07/01/1993
  • Status: Expired due to Term
First Claim
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1. A method for establishing a multicast virtual circuit in an arbitrary-topology network between a source nude and a group of destination nodes, said method comprising the steps of:

  • creating a multicast setup packet at the source node for transfer to the group destination nodes, said multicast setup packet containing a multicast identifier field for storing a unique multicast identifier value, a virtual circuit field and a destination field identifying the group of destination nodes receiving said multicast setup packet;

    allocating selected switches and interconnecting links of said network as elements of said multicast virtual circuits for receiving said multicast setup packet through generating entries of a forwarding table located within an allocated switch, said entries containing routing information pertaining to the outgoing ports associated with the group of destination nodes contained within said destination field of said multicast setup packet to open said multicast virtual circuit.

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