Network message routing using routing table information and supplemental enable information for deadlock prevention
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United States of America Patent
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Jun 22, 1999
Issued Date -
N/A
app pub date -
Jun 7, 1995
filing date -
Dec 17, 1992
priority date (Note) -
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status (Latency Note)
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Abstract
A processing system includes multiple processor units and multiple input/output elements communicatively interconnected by a system area network having a plurality of multi-ported router elements. Communication between the system elements uses message packets that contain, among other things, destination information that identifies the intended recipient of the message packet. That destination information is used, at least in part, for routing message packets from a its source to its intended destination. Deadlocks are eliminated by providing each router with information as to which ports cannot be used for re-transmission of a message packet, depending upon which port is receiving that message packet.
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