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Ethernet automatic protection switching

  • US 6,766,482 B1
  • Filed: 10/31/2001
  • Issued: 07/20/2004
  • Est. Priority Date: 10/31/2001
  • Status: Active Grant
First Claim
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1. A method for automatic protection switching in a ring network comprising:

  • creating an automatic protection switching domain having a control vlan and at least one data vlan;

    detecting a fault in a ring network, the ring network having a master node connected to at least one transit node, each node linked to an adjacent node by at least one of a primary port or a secondary port, the fault indicating a failed link between adjacent nodes;

    communicating the fault to the master node via the control vlan;

    unblocking the master node'"'"'s secondary port to the at least one data vlan'"'"'s traffic;

    setting a state of the ring network to failed; and

    flushing a forwarding database on the master node and on the at least one transit node.

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