Multiplex communications – Wide area network – Packet switching
Patent
1992-03-10
1993-09-28
Lee, Thomas C.
Multiplex communications
Wide area network
Packet switching
395325, 395800, 370 60, 370 61, 364DIG1, 364228, 3642292, 3642303, 3642304, 364266, G06F 928, G06F 1312
Patent
active
052492923
ABSTRACT:
A high speed data packet switching circuit has a software controlled primary processing unit, a plurality of network interface units connected to a plurality of networks for receiving incoming data packet streams and for transmitting outgoing data packet streams, a plurality of high speed data stream hardware control circuits for processing data packets in response to instructions from the primary processing unit and circuitry for interconnecting the primary processing unit, the interface units, and the data stream control circuits. The primary processing unit receives from the network interface unit at least a first one of the data packets of each new data packet stream and assigns that stream to be processed by one of the data stream control circuits without further processing by the primary processing unit. The apparatus and method thus perform routine, repetitive processing steps on the further packets of the data stream using the high speed hardware circuitry, while the initial processing and other non-repetitive or special processing of the data packets are performed in software. Particular hardware is described for effecting the high speed hardware processing of the data packets.
REFERENCES:
patent: 3846763 (1974-11-01), Riikonen
patent: 4281315 (1981-07-01), Bauer et al.
patent: 4312065 (1982-01-01), Ulug
patent: 4456957 (1984-06-01), Schieltz
patent: 4493030 (1985-01-01), Barrart et al.
patent: 4494230 (1985-01-01), Turner
patent: 4499576 (1985-02-01), Fraser
patent: 4601586 (1986-07-01), Bahr et al.
patent: 4630258 (1986-12-01), McMillen et al.
patent: 4630260 (1986-12-01), Toy et al.
patent: 4777595 (1988-10-01), Strecker et al.
patent: 4807282 (1989-02-01), Kazan et al.
patent: 4851997 (1989-07-01), Tatara
patent: 4858112 (1989-08-01), Puerzer et al.
patent: 4899333 (1990-02-01), Roediger
patent: 4975828 (1990-12-01), Wishneusky et al.
patent: 4979100 (1990-12-01), Makris et al.
patent: 4991133 (1991-02-01), Davis et al.
"Hyperchannel Net Is Plugged Into the Open-Systems World," Electronics, Oct. 1, 1987, pp. 96-97.
"Cisco Introduces High-Performance Desktop Gateway That Allows Remote Users to Access World-Wide Networks", ciscoSystems, Inc., Mar. 4, 1988.
"Company Backgrounder Mar. 1988", ciscoSystems, Inc. Network Systems brochures.
Lee Thomas C.
Loomis John C.
LandOfFree
Data packet switch using a primary processing unit to designate does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Data packet switch using a primary processing unit to designate , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data packet switch using a primary processing unit to designate will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2197032