Patent ID: 8064331
Filing Date: 2011-11-22
Classification: H04L

Abstract:
1. A transmitting apparatus for connecting a first network to a second network, the first network having a function of storing information including a source address specified in a packet as learned information and using the learned information for controlling a path and a function of deleting information not used for a predetermined time from the learned information, the transmitting apparatus comprising: a protocol converting unit that converts data transmitted from the second network to the first network into a packet in a format transferable in the first network, the packet including a source address of the data; a storage unit that stores the source address of the data included in the packet and identification information for identifying a path for the data in the second network in a corresponding manner; a failure detecting unit that detects a failure path in the second network in which a failure has occurred; a determining unit that determines whether identification information of the failure path detected by the failure detecting unit is stored in the storage unit or not; a dummy-packet generating unit that generates a dummy packet in which the source address of the data corresponding to the failure path is specified as a source address of the dummy packet, only when the determining unit determines that the identification information of the failure path is stored in the storage unit; and a dummy-packet transmitting unit that transmits the dummy packet generated by the dummy-packet generating unit to the first network.