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Hierarchical routing knowledge for multicast packet routing

  • US 6,078,590 A
  • Filed: 07/14/1997
  • Issued: 06/20/2000
  • Est. Priority Date: 07/14/1997
  • Status: Expired due to Term
First Claim
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1. A method of routing multicast packets in a network, including the steps ofdefining a subset of said network;

  • defining a set of border routers within said subset;

    for said border routers, maintaining a first set of unicast routing information for routing multicast packets from devices external to said subset; and

    for routers within said subset other than said border routers, maintaining a second set of unicast routing information for routing multicast packets only from devices within said subset.

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