Methods and apparatus based on message transmission times

Details Methods and apparatus based on message transmission times Methods and apparatus based on message transmission times

2005-02-23

2008-12-30

Orgad, Edan (Department: 2619)

Multiplex communications

Diagnostic testing

Fault detection

C370S252000

Reexamination Certificate

active

07471636

ABSTRACT:
A data communication device (e.g., a router) originates a network configuration message in response to a network topology change or so as to refresh a configuration message. The data communication device encodes a timestamp in the network configuration message. The timestamp indicates a time of originating the network configuration message. Further, the data communication device transmits the network configuration message over the network to other network devices that, in turn, initiate further broadcast of at least a portion of contents of the network configuration message. Based on the timestamp of the network configuration message, the data communication devices receiving the network configuration message identify transmission time value indicating how long the network configuration message takes to be conveyed over the network to the other network devices. The data communication devices utilize the transmission time value as a timeout period for determining whether a data communication device failure occurs.

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