Patent ID: 6564258
Filing Date: 2003-05-13
Classification: H04L

Abstract:
In a communications network comprising a plurality of resources arranged in a plurality of layers wherein resources at a client layer are dependent upon resources at a server layer, the network including means for maintaining an object database describing a plurality of resources of said communications network, said object database comprising a plurality of instances representing physical and logical resources, the network further including means for modifying individual ones of said plurality of instances when a said resource is re-configured by setting a state of a said instance,a method of determining an alternative network connectivity for a client layer resource of said network affected by a network topology change at a server layer of said communications network, said method comprising the steps of: determining if the client layer resource is affected by a network topology change affecting a server layer resource; and in the event that said client layer resource is affected by said change, determining an alternative network connectivity for said at least one client layer resource affected by said change.