Network system comprising a plurality of lans connected to an ISDN via a plurality of routers, each capable of automatically creating a table for storing router information

Patent 5351237 Issued on September 27, 1994. Estimated Expiration Date:

June 4, 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

Virtual PBX call processing method
Patent #: 4764919
Issued on: 08/16/1988
Inventor: Hunter , et al.

Data communications network
Patent #: 5142531
Issued on: 08/25/1992
Inventor: Kirby

Routing apparatus and method for high-speed mesh connected local area network
Patent #: 5179558
Issued on: 01/12/1993
Inventor: Thacker, et al.

Switching system using identical switching nodes Patent #: 5182751
Issued on: 01/26/1993
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Inventors

Assignee

NEC Corporation

Application

No. 071776 filed on 06/04/1993

US Classes:

370/392, Processing of address header for routing, per se370/401, Bridge or gateway between networks370/475Address transmitted

Examiners

Primary: Safourek, Benedict V.

Attorney, Agent or Firm

Ostrolenk, Faber, Gerb & Soffen

International Class

H04L 012/56

Foreign Application Priority Data

1992-06-05 JP

Abstract

In a network system including a plurality of LANs connected to an ISDN via a plurality of routers each of which includes a table for router information, each router sets local router information and main/sub setting information. Each sub-router sets main router information which is written in said table. Each sub-router sends an enquiry packet including the local router information to the main router. The main router receives the enquiry packet, enters the local router information in the table, and sends, to each sub-router, a reply packet including the local router information stored in the table. Each sub-router receives the reply packet and enters the local router information in the table. On the basis of the router information stored in the table, each router renews routing information.