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Traffic forwarding in a traffic-engineered link aggregation group

  • US 7,912,091 B1
  • Filed: 03/18/2009
  • Issued: 03/22/2011
  • Est. Priority Date: 03/18/2009
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • receiving a data packet at a network switch, the packet having a destination address that is reached via a Link Aggregation group on a virtual local area network (VLAN);

    performing a forwarding database lookup to determine a Link Aggregation port reference number for the data packet on the VLAN;

    searching a Link Aggregation port table to determine a primary Link Aggregation port and a backup Link Aggregation port for forwarding the packet based at least on the Link Aggregation port reference number;

    searching a port array to determine if the primary Link Aggregation port is valid;

    forwarding the packet on the primary Link Aggregation port if the primary port is valid; and

    forwarding the packet on the backup Link Aggregation port if the primary port is not valid.

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