Method and apparatus for coordinating fault recovery techniques among domains
First Claim
1. A method for coordinating recovery in a network, the method comprising:
- detecting a fault in the network, the network including at least a first recovery domain and a second recovery domain, each of the first and second recovery domains including a respective plurality of nodes interconnected to support at least one network path traversing the first and second recovery domains; and
notifying the first recovery domain, based on an indication signal provided by the second recovery domain, that the second recovery domain is or is not taking action to recover the fault in the network.
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Abstract
In a telecommunications/data network, it is common to have multiple recovery domains each employing its own technique for recovering a fault that may be different from a technique employed by another domain. Permitting multiple recovery domains to recover a fault without coordination among the domains can result in adverse interactions, such as rapid and repeated changes in the actions taken or “flapping,” and repeated hits to traffic. A method and corresponding apparatus for coordinating fault recovery in a network, according to an embodiment of the present invention, notifies a first recovery domain that a second recovery domain is or is not taking action to recover a fault in the network. Coordinating the recovery efforts of the first and second recovery domains reduces fault recovery time and allows concurrent actions to be taken.
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Citations
20 Claims
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1. A method for coordinating recovery in a network, the method comprising:
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detecting a fault in the network, the network including at least a first recovery domain and a second recovery domain, each of the first and second recovery domains including a respective plurality of nodes interconnected to support at least one network path traversing the first and second recovery domains; and notifying the first recovery domain, based on an indication signal provided by the second recovery domain, that the second recovery domain is or is not taking action to recover the fault in the network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An apparatus to coordinate recovery in a network, the apparatus comprising:
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an interface communicatively coupled to the network, the network including at least a first recovery domain and a second recovery domain, each of the first and second recovery domains including a respective plurality of nodes interconnected to support at least one network path traversing the first and second recovery domains; and a notifying unit communicatively coupled to the interface to notify the first recovery domain based on an indication signal provided by the second recovery domain, that the second recovery domain is or is not taking action to recover a fault in the network. - View Dependent Claims (19, 20)
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Specification