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Hierarchical routing knowledge for multicast packet routing

  • US 6,611,528 B1
  • Filed: 10/10/2000
  • Issued: 08/26/2003
  • Est. Priority Date: 07/14/1997
  • Status: Expired due to Term
First Claim
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1. A method for routing in a network a multicast packet using a first router, comprising:

  • receiving at the router the packet; and

    forwarding the packet from the router to a second router based upon a first set of unicast routing information maintained at the first router, the information being for use in routing multicast packets from devices external to a subset of the network, the subset comprising the first router and the second router, the second router maintaining a second set of unicast routing information for use in routing multicast packets only from devices within the subset.

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