Multiplex communications – Wide area network – Packet switching
Patent
1996-03-13
1998-05-05
Harrity, John E.
Multiplex communications
Wide area network
Packet switching
370229, G06F 1516
Patent
active
057489009
ABSTRACT:
A congestion control mechanism for a node of a modular computer network system. The mechanism includes registers for maintaining the number of undelivered requests and unanswered requests for the node and registers for the maximum number of such undelivered requests and unanswered requests. The mechanism regulates congestion on the network by throttling back or ratcheting up the allowed number of undelivered requests and unanswered requests based upon the level of busy and non-busy results of such requests and answers. Congestion is also alleviated by the implementation of a set of large and small send and receive buffers. These buffers are configurably partitioned among virtual I/O channels. Each request virtual I/O channel may utilitize congestion control.
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Kunkel Daniel L.
Logghe Peter G.
Pribnow Richard D.
Schwoerer Gerald A.
Scott Steven L.
Cray Research Inc.
Harrity John E.
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