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Network layer multicasting in trill networks

  • US 9,628,293 B2
  • Filed: 02/18/2011
  • Issued: 04/18/2017
  • Est. Priority Date: 06/08/2010
  • Status: Active Grant
First Claim
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1. A switch, comprising:

  • determining circuitry configured to determine, for a first multicast packet, a first internal multicast group identifier comprising a first and a second sets of bits, and for a second multicast packet, a second internal multicast group identifier comprising the first and a third sets of bits, wherein the first set of bits is determined based on a multicast-address and a source address of the first multicast packet, wherein the second set of bits is determined based on a first multicast tree identifier, which is a switch identifier of a root switch of a first multicast tree corresponding to a first virtual network, and wherein the third set of bits is determined based on a second multicast tree identifier, which is a switch identifier of a root switch of a second multicast tree corresponding to a second virtual network;

    forwarding circuitry configured to;

    determine, for the first multicast packet, one or more output ports associated with the first multicast tree associated with the first virtual network based on the first internal multicast group identifier; and

    determine, for the second multicast packet, one or more output ports associated with the second multicast tree based on the second internal multicast group identifier.

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