Routing device utilizing an ATM switch as a multi-channel backplane in a communication network

Patent 5408469 Issued on April 18, 1995. Estimated Expiration Date:

July 22, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

User to network interface protocol for packet communications networks
Patent #: 4922486
Issued on: 05/01/1990
Inventor: Lidinsky, et al.

Method and apparatus for linking an SNA host to a remote SNA host over a packet switched communications network
Patent #: 5021949
Issued on: 06/04/1991
Inventor: Morten, et al.

Method and apparatus for testing and evaluation of distributed networks Patent #: 5271000
Issued on: 12/14/1993
Inventor: Engbersen, et al.

Inventors

Application

No. 096783 filed on 07/22/1993

US Classes:

370/399, Employing logical addressing for routing (e.g., VP or VC)370/401, Bridge or gateway between networks370/474, Assembly or disassembly of messages having address headers370/911Bridge (e.g., brouter, bus extender, etc.)

Examiners

Primary: Olms, Douglas W.
Assistant: Hom, Shick

Attorney, Agent or Firm

Blakely, Sokoloff, Taylor & Zafman

International Class

H04Q 011/04

Abstract

A data communications network providing for a multiport router and providing for use of an asynchronous transfer mode (ATM) switch or the like as a routing backplane or packet switching engine. A router front end formats ATM cells including providing routing information in the cell header. The routing information may comprise, for example, a destination port identifier in the VPI field of the cell header. The ATM switch then switches the cell from an input port, coupled with the router front end to an output port based on the routing information. The ATM switch may also translate the routing information to provide source identification information to the destination. In a described embodiment, the multiport router is used as a backplane bus in a network concentrator.

Other References

Lattis EZ-View™, Product Brochure, SynOptics Communication, Inc., Santa Clara, Cailf
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Handel, R. and Huber, M. N., Integrated Broadband Networks, an Introduction to ATM-based Networks, Addison-Wesley, 1991 pp. 14-17, 84-91, 113-13