Multiplex communications – Data flow congestion prevention or control – Control of data admission to the network
Reexamination Certificate
2006-07-04
2006-07-04
Qureshi, Afsar (Department: 2667)
Multiplex communications
Data flow congestion prevention or control
Control of data admission to the network
C370S395100, C370S392000, C370S470000
Reexamination Certificate
active
07072298
ABSTRACT:
A switch segments variable length frames into cells for transmission over a cell-based switch fabric and handles rate differences between the input data rate and the switch fabric data rate. The fabric handles multiple cell packets by maintaining a switch path until a certain number of cells are transmitted as indicated in a length field in the first data cell. The first cell contains a full data payload, and a length field value sufficient to handle a maximum length frame. Subsequent cells can contain less than a full data payload, with the number of valid bytes in the cell being indicated in the length field. The last cell used to segment the frame contains an end of frame indicator. The indicator signals the destination port side of the switch to terminate the packet path in the switch fabric prematurely—before the number of cells indicated in the first data cell.
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Cantwell Larry
Gonzalez Henry O.
Paul Harry V.
Beck & Tysver P.L.L.C.
Computer Network Technology Corporation
Qureshi Afsar
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