Communication apparatus for transmitting frames and priority...

Details Communication apparatus for transmitting frames and priority... Communication apparatus for transmitting frames and priority...

2005-03-03

2008-11-11

Shah, Chirag G (Department: 2619)

Multiplex communications

Data flow congestion prevention or control

Control of data admission to the network

Reexamination Certificate

active

07450506

ABSTRACT:
Frames of different priority levels are queued in a plurality of queues, e.g., first priority queue, second priority queue and third priority queue. If it is judged that a lower priority frame can be completely transmitted by the timing of transmitting a higher-priority frame based on the frame length, the lower-priority frame is transmitted, and otherwise, the lower-priority frame is not transmitted. Accordingly, frame transmission control that is applicable to fixed-length frames and variable-length frames is realized in a frame scheduler for an apparatus having a function of outputting frames. Also, priority-based control of frames which is suitable for a layer 2 switch or the like and which is adaptable to processing in a high-speed network is realized without providing an IP fragment.

REFERENCES:
patent: 6570873 (2003-05-01), Isoyama et al.
patent: 6570883 (2003-05-01), Wong
patent: 2002/0097679 (2002-07-01), Berenbaum
patent: 2004/0001493 (2004-01-01), Cloonan et al.
patent: 2004/0114516 (2004-06-01), Iwata et al.

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