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Use of Partitions to Reduce Flooding and Filtering Database Size Requirements in Large Layer Two Networks

  • US 20120063306A1
  • Filed: 09/09/2011
  • Published: 03/15/2012
  • Est. Priority Date: 09/10/2010
  • Status: Active Grant
First Claim
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1. A network component, comprising:

  • ingress ports;

    egress ports;

    a memory unit comprising a filtering database (FDB), wherein the FDB comprises a medium access control (MAC) address and a Virtual Local Area Networks (VLAN) Identifier (VID) pair (<

    MAC,VID>

    ) for each of a plurality of end-stations associated with an edge-district partition of a network, wherein the edge-district partition is associated with the network component, and wherein the FDB comprises a wildcard FDB entry corresponding to each VLAN associated with the network component, anda logic unit coupled to the ingress ports and the egress ports, wherein the logic unit is configured to reduce flooding in the edge-district partition of the network;

    wherein the logic unit is configured to forward a received frame, having a destination MAC address and a VID for which there is not an exact match in the FDB, towards a core-bridge without flooding based on the wildcard entry in the FDB.

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