Network related information transfer method for a connection device, and a data communication system

摘要

A router is connected to a network having a terminal and also connected to other routers via an ISDN, and inter-network routing information retained by each router is transferred through the ISDN. In response to a routing information request from the terminal, the router establishes a connection with another router by means of an ISDN address in its first table. Then, the router receives, learns and retains the routing information transmitted from the other router, thus making it unnecessary to set all required routing information, and then sends the routing information to the network connected thereto.