| 摘要 |
<p>Method of providing a recovery plan for a connection in a communications network when the connection is disrupted by a failure of a switch, switch or link in the network. In a provisioning phase, a primary plan and recovery plan for a connection to be protected in a communications network are developed. Forwarding information in the form of mapping tables (A,B and C in Fig. 5) is derived from the plans and is distributed to each of the switches in the network. In the event of a failure each switch receives notice of the failure and switches to the recovery plan related to the failure. If and when the failure is repaired or cleared, each switch then switches back to its primary plan.</p> |
