| 摘要 |
A LAN analyzer is applied to a computer system in which a plurality of computers are connected to a transmission line of a LAN, and which has a first operation mode wherein the plurality of computers execute a piece of information processing, while using a message passing through the transmission line and a second operation mode wherein the same operation as in the first operation mode is replayed. The LAN analyzer includes a message reading section for reading a message, including at least information on a sender computer and a destination computer, which has been output from the plurality of computers to the transmission line, in the first operation mode, a communication history storing section for storing messages read by the message reading section and message generation time information on the time at which the messages are generated, in a time series manner, in the first operation mode, and message reproducing section for reading the messages stored in the communication history storing section in the sequence in which the messages were stored, and sequentially outputting the messages on the basis of the message generation time information, in the second operation mode. Each of the plurality of computers includes a replay device for replaying the information processing in accordance with an output of the message reproducing section in the second operation mode, and a message output prohibiting device for prohibiting a message from being output to the transmission line.
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