I'm using CCNA Network Visualizer version 5 and setup my network.
I have couple of routers 2600 attached together with the following settings:
ip address 192.168.2.1 255.255.255.0
ip address 192.168.2.2 255.255.255.0
when ping from router A to router B, I get a request time.
I know I should use their serial interface of both routers.