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Apparatus for multicast forwarding in a virtual local area network environment

  • US 20020191628A1
  • Filed: 06/12/2001
  • Published: 12/19/2002
  • Est. Priority Date: 06/12/2001
  • Status: Active Grant
First Claim
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1. An apparatus for distributing multicast messages associated with a multicast address among ports of a network device on the basis of a virtual local area network (VLAN), one or more VLANs within the network device are assigned to the multicast address, each VLAN having a multicast destination subset which includes one or more destination ports assigned from the ports of the network device, the apparatus comprising:

  • a means for generating a group of multicast destination ports by collectively combining every multicast destination subset within all of the VLANs assigned to the multicast address on the network device; and

    a plurality of translation engines respectively associated with each port of the network device, each translation engine independently performing a VLAN identifier (VID) translation in parallel on each port which belongs to the group of multicast destination ports;

    wherein the group of multicast destination ports are all of the destination ports assigned to the multicast address on the network device.

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