To provide a connection monitoring device for detecting disconnection without fail at high-speed by setting a management frame transmission period for detecting disconnection according to the property of a network.
The connection monitoring device transmits a connection monitoring frame periodically to the other end, and monitors disconnection with the other end based on receiving interval of a connection monitoring frame periodically transmitted from the other end. Further, the device measures a delay jitter value based on reception of a management frame for delay jitter measurement including a delay jitter value measured at the other end and a transmission time information transmitted intermittently from the other end, and transmits intermittently a management frame for delay jitter measurement including the measured delay jitter value and a transmitting time information to the other end. The device comprises a transmission period adjustment portion 10 and a connection monitoring frame transmission control portion 21. The transmission period adjustment portion 10 variably adjusts the transmission period of the connection monitoring frame, based on the delay jitter value included in the received management frame for delay jitter measurement. The connection monitoring frame transmission control portion 21 transmits the connection monitoring frame to the other end using the transmission period adjusted at the transmission period adjustment portion.
COPYRIGHT: (C)2007,JPO&INPIT
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