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US 2012/0236866 A1Published application
Communication system and communication device
AssigneeHitachi, Ltd.
InventorsHideki Endo, Taisuke Ueta, Yoshihiro Ashi, Norio Miyazaki
Life of this patent
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AssigneeHitachi, Ltd.
InventorsHideki Endo, Taisuke Ueta, Yoshihiro Ashi, Norio Miyazaki
Estimating the term…
Provided is a communication system which is provided with a plurality of communication devices and transfers a packet between the plurality of communication devices through a communication path. When a packet is looped back at any of the communication devices on the communication path to verify connectivity of the communication path, a first communication device of the plurality of communication devices stores, in a first region of header information of the packet, first information for designating the communication device at which the packet is looped back, further stores, in a second region of the header information of the packet, second information on a loopback point in the designated communication device at which the packet is looped back, and sends the packet to which the first information and the second information have been added.
A communication system comprising a plurality of communication devices and transferring a packet between the plurality of communication devices through a communication path,
A first communication device located at a start point of a communication path in a communication system which transfers a packet via a plurality of communication devices by using the communication path,
A communication device located at a point other than a start point of a communication path in a communication system which transfers a packet via a plurality of communication devices by using the communication path,
Dependencies are inferred from the claim text.