Method and apparatus for detecting a fault in a multicast routing infrastructure
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United States of America Patent
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Feb 4, 2003
Grant Date -
N/A
app pub date -
Jun 30, 1998
filing date -
Jun 30, 1998
priority date (Note) -
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Abstract
A method and system for detecting faults in data packet routing devices in a computer network capable of routing messages using a multicast protocol is described. Faults in devices, such as routers and switches, are detected in near real-time when using a multicast routing infrastructure by configuring a device to be a sender or source of test data packets and one or more other devices to receive test data packets. The test packet sender transmits test data packets to a test group of test packet receivers where the test group has a group identifier. The test receivers prepare data or fault reports describing errors regarding missing or duplicated data packets. These fault reports are prepared soon after the errors are detected and sent back to a multicast routing manager for isolating the device causing the fault. The messages sent to the test devices contain instructions regarding time intervals during which fault reports can be sent to the multicast routing manager from the multiple test receivers.
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