Multiplex communications – Diagnostic testing
Reexamination Certificate
2006-07-28
2011-10-04
Vu, Huy (Department: 2461)
Multiplex communications
Diagnostic testing
C370S242000
Reexamination Certificate
active
08031617
ABSTRACT:
A system and method for detecting path failure in a network are described. The system and method include a network interface which receives packets over particular connections, and an agent able to monitor the network interface and start a no-traffic timer for each particular connection when a packet is received on the connection. The agent is further able, when the no-traffic timer expires, to check for outgoing data on the particular connection, and compare a count of previously sent test packets against a limit. If the count is below the limit the agent sends a new test packet on the particular connection, the test packet provides an indication of the state of a network path associated with the particular connection. If the count is above the limit the agent initiates failover procedures for the associated path.
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Chadalapaka Mallikarjun
Haagens Randolph B.
Mogul Jeffrey C.
Wagner Richard J.
Wrenn Richard F.
Clawson Stephen J
Hewlett--Packard Development Company, L.P.
Vu Huy
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