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Fast path forwarding of link state advertisements using multicast addressing

  • US 6,606,325 B1
  • Filed: 12/10/1999
  • Issued: 08/12/2003
  • Est. Priority Date: 12/10/1999
  • Status: Expired due to Term
First Claim
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1. A method for propagating link state advertisement protocol messages by a network device in a communication network, the network device having a plurality of interfaces, a fast path for forwarding protocol messages, and a control plane for processing protocol messages, the method comprising:

  • determining a multicast distribution tree for forwarding link state advertisement protocol messages from an originating device S to a multicast group G;

    receiving a link state advertisement protocol message for the (S,G) pair over an inbound interface; and

    forwarding the link state advertisement protocol message by the fast path according to the multicast distribution tree associated with the (S,G) pair independently of any control plane processing of the link state advertisement protocol message.

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