Electrical computers and digital processing systems: multicomput – Computer-to-computer protocol implementing – Computer-to-computer data transfer regulating
Patent
1998-01-21
1999-10-26
Vu, Viet D.
Electrical computers and digital processing systems: multicomput
Computer-to-computer protocol implementing
Computer-to-computer data transfer regulating
709235, 709240, 370230, G06F 1300, H04J 302
Patent
active
059744650
ABSTRACT:
In a switching device coupled to a computer network, a method for enqueing data packets for transmission over the computer network according to a priority scheme. Initially, the switching device is configured to define a hierarchy of priority levels. A number of queue buffers are reserved for each of the priority levels. Furthermore, each application program is assigned a particular priority, depending its relative importance and time-criticalness. When the application program generates an outbound packet, that packet is assigned a corresponding priority. The CPU checks the number of buffers in the queue which are currently available and compares it with the sum of the buffers which were reserved for all priority levels which are higher than the priority of the outbound packet. If the number of available buffers exceeds the sum of the buffers reserved for the priority levels higher than that of the packet, then the packet is stored in the queue. Otherwise, the packet is discarded. Thereby, a subsequent higher priority packet can be preferentially stored in place of a lower priority packet which was earlier received.
REFERENCES:
patent: 5195089 (1993-03-01), Sindhu et al.
patent: 5404550 (1995-04-01), Horst
patent: 5634015 (1997-05-01), Chang et al.
patent: 5793747 (1998-08-01), Kline
3Com Corporation
Vu Viet D.
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