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Supporting multiple multicast trees in trill networks

  • US 9,608,833 B2
  • Filed: 02/18/2011
  • Issued: 03/28/2017
  • Est. Priority Date: 06/08/2010
  • Status: Active Grant
First Claim
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1. A switch, comprising:

  • determining circuitry configured to;

    determine an internal multicast group identifier comprising a first and a second sets of bits, wherein the first set of bits is based on a source address and a multicast address associated with a multicast packet, wherein the second set of bits is based on;

    a multicast tree identifier in response to associated with the multicast packet being associated with the multicast tree identifier; and

    a hash-based technique in response to the multicast packet not being associated with a multicast tree identifier; and

    wherein scope of the internal multicast group identifier is internal and local within the switch; and

    forwarding circuitry configured to determine one or more output ports for the multicast packet by performing a lookup using the internal multicast group identifier.

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