Multiplex communications – Wide area network – Packet switching
Patent
1993-04-28
1995-11-28
Safourek, Benedict V.
Multiplex communications
Wide area network
Packet switching
370 856, 370 941, H04L 1224
Patent
active
054714613
ABSTRACT:
A moderator on a communication network periodically transmits a set of parameters for a protocol that is used to communicate over the network. Each node on the network compares the set of protocol parameters from the moderator to a set of parameters stored in that node. If the sets of parameters at a given node do not match, that given node ceases transmitting messages over the network until either the set of protocol parameters from the moderator match the stored set of parameters, or a matching set of parameters is stored in the node. Typically the active node that is assigned the lowest numerical network address functions as the moderator. However, an automatic process is utilized to prevent a node with a non-matching set of the protocol parameters from becoming the moderator for more than a brief period of time. An override procedure is provided to force all the nodes on the network to adopt a common set of protocol parameters in the event that the automatic process fails.
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Engdahl Jonathan R.
Gee David J.
Kucharski Paul
Lucak Mark A.
Allen-Bradley Company Inc.
Hamann H. F.
Horn John J.
Safourek Benedict V.
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