Patent ID: 7680130

Claim:
A method for finding a resource or a service performed in a relay node relaying a frame, the method comprising: maintaining a search table to register more than one relay node available to provide the resource or the service and corresponding information identifying the resource or the service; receiving an access request for the resource or the service, the access request including identification information associating a first relay node with the resource or the service that had been requested and status information indicating that the first relay node has stopped providing the resource or the service, the access request which does not indicate a second relay node that is available to provide the resource or the service that is no longer provided by the first relay node; searching, in response to the status information, the search table using the identification information to identify the second relay node that is available to provide the requested resource or the service; switching from the first relay node to the second relay node; searching the search table based on the identification information indicated in the access request when the access request for obtaining the resource or the service is received from a request node; and accessing an available node providing the resource or the service, wherein the resource or the service is public and managed by the relay nodes, and the identification information associating the resource or the service with network addresses of the relay nodes is exchanged among the relay nodes.