Memory and apparatus for input based control of discards in a lossy packet network
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United States of America Patent
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Oct 16, 2001
Grant Date -
N/A
app pub date -
Sep 11, 1998
filing date -
Sep 11, 1998
priority date (Note) -
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Abstract
The present invention relates to a lossy switch for processing data units, for example IP data packets. The switch can be implemented as a contained network that includes a plurality of input ports, a plurality of output ports and a lossy switch fabric capable of establishing logical pathways to interconnect a certain input port with a certain output port. A characterizing element of the switch is its ability to control the discard of data packets at a transport point within the switch. This control mechanism prevents and reduces congestion which may occur within the switch fabric and at the level of the input and output ports. The system also supports priorities, routing HI priority request data packets over the switch fabric before LO priority request data packets, and discarding LO priority data packets first when controlling congestion.
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