COMMUNICATION TEST DEVICE AND COMMUNICATION TEST METHOD

Even when a priority frame and a non-priority frame are provided as communication frames, real-time performance and security of communications are both provided.A rule verification portion 7 tests a communication frame in accordance with a test rule and determines whether the communication frame is...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ENDOH, Hiromichi, MARUYAMA, Tatsuya
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:Even when a priority frame and a non-priority frame are provided as communication frames, real-time performance and security of communications are both provided.A rule verification portion 7 tests a communication frame in accordance with a test rule and determines whether the communication frame is an invalid frame. Verification status hold portions 4 and 5 hold status information that indicates a status of the test by the rule verification portion 7. An interception control portion 8 controls interception of the communication frame based on a determination result of the rule verification portion 7. When an I/F portion 1 receives a fragment of a non-priority frame, the rule verification portion 7 tests the fragment to test the non-priority frame, when ending the test on the fragment, interrupts the test on the non-priority frame, and when the I/F portion 1 receives a next fragment, resumes the test on the non-priority frame based on status information.