Multiplex communications – Wide area network – Packet switching
Patent
1988-03-31
1990-01-23
Goldstein, Herbert
Multiplex communications
Wide area network
Packet switching
370 941, 34082534, H04Q 1104
Patent
active
048963194
ABSTRACT:
A high capacity metropolitan area network (MAN) is described. Data traffic from users is connected to data concentrators at the edge of the network, and is transmitted over fiber optic data links to a hub where the data is switched. The hub includes a plurality of data switching modules, each having a control means, and each connected to a distributed control space division switch. Advantageously, the data switching modules, whose inputs are connected to the concentrators, perform all checking and routing functions, while the 1024.times.1024 maximum size space division switch, whose outputs are connected to the concentrators, provides a large fan-out distribution network for reaching many concentrators from each data switching module. Distributed control of the space division switch permits several million connection and disconnection actions to be performed each second, while the pipelined and parallel operation within the control means permits each of the 256 switching modules to process at least 50,000 transactions per second. The data switching modules chain groups of incoming packets destined for a common outlet of the space division switch so that only one connection in that switch is required for transmitting each group of chained packets from a data switching module to a concentrator. MAN provides security features including a port identification supplied by the data concentrators, and a check that each packet is from an authorized source user, transmitting on a port associated with that user, to an authorized destination user that is in the same group (virtual network) as the source user.
REFERENCES:
patent: 4386266 (1983-05-01), Chesarek
patent: 4475192 (1984-10-01), Fernow et al.
patent: 4663754 (1987-05-01), Senoo
patent: 4672533 (1987-06-01), Noble et al.
patent: 4707827 (1987-11-01), Bione et al.
patent: 4710613 (1987-12-01), Shigenaga
patent: 4745593 (1988-05-01), Stewart
patent: 4764919 (1988-08-01), Hunter et al.
Data Communication Networks Interfaces, CCITT "Red Book", (Rec. X.20-X.32) vol. VII, Fascicle VIII.3, VIIIth Plenary Assembly, Oct. 8-19, 1984, Malaga-Torremolinos, pp. 108-243.
J. F. McCool, "The Emerging FDDI Standard", Telecommunications, vol. 21, No. 5, May 1987.
J. S. Quarterman et al., "Notable Computer Networks", Communications of the ACM, vol. 29, No. 10, Oct. 1986, pp. 932-971.
"Metropolitan Area Network Generic Framework Systems Requirements In Support of Switched Multi-Megabit Data Service", Technical Advisory TA-TSY-000772, Bell Communications Research, Inc., issue 1, Feb. 1988, pp. 1--12-1.
Lidinsky William P.
Roediger Gary A.
Steele Scott B.
Weddige Ronald C.
Zelle Bruce R.
American Telephone and Telegraph Company AT&T Bell Laboratories
Goldstein Herbert
Scutch III Frank M.
Ulrich Werner
LandOfFree
Identification and authentication of end user systems for packet does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Identification and authentication of end user systems for packet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Identification and authentication of end user systems for packet will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-649318