Method and apparatus for avoiding packet loss on a CSMA/CD-type local area network using receive-sense-based jam signal
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United States of America Patent
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Oct 22, 1996
Grant Date -
N/A
app pub date -
Oct 26, 1994
filing date -
Oct 26, 1994
priority date (Note) -
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status (Latency Note)
Importance
Abstract
An Ethernet network or other CSMA/CD network includes a hub that is modified to generate a jamming signal on a communication line when a packet received over that line is directed to an unavailable destination. The destination may be unavailable due to full transmit buffers, full receive buffers, or congestion in other parts of the hub architecture. Jamming is detected by the source node as a collision and causes retransmission of the packet from the source node. The decision to jam may include a determination of the packet's priority which may be determined based on the packet's destination or source address.
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