Patent ID: 7848224

Claim:
A method, in a data communications network having as components nodes and links therebetween, of constructing a repair path for multicast data around a non-available component comprising: at each repairing node in the data communications network: for each notifying node in the data communications network that is not the repairing node: while the notifying node is still available: receiving, from the notifying node in the data communication network, a notification identifying the notifying node and a set of all components that are adjacent to the notifying node and through which the notifying node is reachable; for each component from the set of all components that are adjacent to the notifying node and through which the notifying node is reachable: deriving, from the notification, a network repair address for use in the event of non-availability of the component identified in the notification; and using the repair address from the notification, constructing a repair path for the component identified in the notification for multicast data for use in the event of non-availability of the component identified in the notification.