Communication control program, recording medium carrying communication control program, communication control method, and data processing apparatus

A communication control method performed in a computer including a plurality of control means for controlling data communication in a hierarchical configuration and data transfer control means for controlling data transfer among the plurality control means for controlling data communication, wherein the method comprising the steps of:

• judging whether received data contain an anomaly indication indicating occurrence of an anomalous event, in the data transfer control means for controlling data transfer;
• adding, upon detection of the anomaly indication, anomaly information into data to be transferred to the plurality of control means for controlling data communication, in the data transfer control means for controlling data transfer;
• and
• sending the data containing the added anomaly information at substantially the same time to the plurality of control means for controlling data communication or to the plurality of control means for controlling data communication other than the control means for controlling data communication which has transmitted the data containing the anomaly indication, in the data transfer control means for controlling data transfer.

A data processing apparatus comprising:

• a plurality of control means for controlling data communication in a hierarchical configuration;
• and
• data transfer control means for controlling data transfer among the plurality of control means for controlling data communication,
• wherein the data transfer control means further comprising:
• anomaly judgment means for judging whether received data contain an anomaly indication indicating occurrence of an anomalous event;
• anomaly setting means for adding, upon detection of the anomaly indication, anomaly information into data to be transferred to the plurality of control means for controlling data communication;
• and
• discard instruction means for sending the data containing the added anomaly information at substantially the same time to the plurality of control means for controlling data communication or to the plurality of control means for controlling data communication other than the control means for controlling data communication which has transmitted the data containing the anomaly indication.