Automatic control plane recovery for agile optical networks
OwnerQuansheng Wu, Ling-Zhong Liuinventors
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Abstract
This application proposes a solution for providing fast auto-recovery of the control plane network against a control link failure in an optical communications network. The described solution applies to both protected and unprotected control channels. If a control channel is protected, the solution is triggered only when the protection control channel cannot resume the connectivity. In a control link failure situation each node in a neighboring pair attempts to find an alternate control route before informing the network manager of the link failure. If an alternate route is established, the control plane is quickly re-established without involving system resources.
Claims16
A method of performing automatic recovery of a control plane network in the event of a control link failure in an optical communications system comprising:
- detecting a failure in a control link between neighboring nodes;
- searching for an alternate route between the neighboring nodes;
- if an alternate route is located, switching the control plane to the alternate route;
- and
- notifying respective switch nodes of the alternate route.
A system for performing automatic recovery of a control plane network in the event of a control link failure in an optical communications system comprising:
- a link manager for detecting a failure in a control link between neighboring nodes;
- and
- a control channel manager for searching for an alternate route between the neighboring nodes, for switching the control plane to the alternate route if an alternate route is located, and for notifying respective nodes of the alternate route.
Dependencies are inferred from the claim text.