Method and apparatus for coordinating fault recovery techniques among domains

An apparatus to coordinate recovery in a network, the apparatus comprising:

• an interface communicatively coupled to the network;
• a notifying unit communicatively coupled to the interface to notify a first recovery domain that a second recovery domain is or is not taking action to recover a fault in the network;
• and
• given an indication related to notifying the first recovery domain, an applying unit communicatively coupled to the notifying unit to apply the indication to a policy to determine whether the first recovery domain is to take action.

An apparatus to coordinate recovery in a network, the apparatus comprising:

• an interface communicatively coupled to the network;
• a notifying unit communicatively coupled to the interface to notify a first recovery domain that a second recovery domain is or is not taking action to recover a fault in the network;
• and
• an applying unit communicatively coupled to the notifying unit to apply a recovery-in-progress signal in response to an alarm indication signal (AIS) received by a switching node within the second recovery domain.

An apparatus to coordinate recovery in a network, the apparatus comprising:

• an interface communicatively coupled to the network;
• a notifying unit communicatively coupled to the interface to notify a first recovery domain that a second recovery domain is or is not taking action to recover a fault in the network;
• and
• an applying unit communicatively coupled to the notifying unit to apply an alarm indication signal (AIS) and recovery-in-progress signal in response to detecting the fault at a switching node within the second recovery domain.

A computer program product including a non-transitory computer readable medium having a computer readable program stored thereon, the computer readable program, when executed by a computer, transforms the computer into a programmed computer and causes the programmed computer to:

• in a network:
• notify a first recovery domain that a second recovery domain is or is not taking action to recover a fault in the network to coordinate recovery in the network;
• and
• given an indication related to notifying the first recovery domain, apply the indication to a policy to determine whether the first recovery domain is to take action.