For this experiment you need to do a lot of configuration.
We set up the routers so that the ethernet 0 interface has
the ip address 10.2.n.30 while the ethernet 1 interface has
the ip address 10.2.m.5 where n is the same as the router, or
network number, and m is the network number of the second
network connected to that router. So, referring to the diagram
under Procedure And Details, the ethernet 0 interface on router 3 would have the
address 10.2.2.30 while the ethernet 1 interface would have
10.2.4.5. We used the number 30 for all ethernet 0 interfaces
and the number 5 for all ethernet 1 interfaces. We were
thinking of router 4 as connecting Net 2 to Net 4.
The important thing is to choose a simple scheme and stick to
it in order to simplify repetetive tasks.
Configuring the routing tables turned out to be quite
interesting.
The O'Reilly book,
Managing IP Networks with Cisco Routers, by Scott M.
Ballew turned out to be extremely helpful. The procedure
turns out to be quite simple.
telnet to the router (requires password).
- type "enable" (requires password).
- You are now in global configuration mode.
- At this point it is a very good idea to type "show
run(ning)" just to see what is already going on.
- Type "config(ure) t(erminal)". The prompt will change.
- Type "ip route dest_addr dest_subnet_mask
interface" for each network you wish to reach.
- Hit Control-Z.
- End your telnet session.
Suppose you are configuring router 1 in an open ring topology.
For each network on the other side of router 2 that you wish
to reach, you would type "ip route ip_address subnet_mask
your_interface_to_router_2".
It sounds so simple, but it will probably be quite
interesting and reveal a misunderstanding or two. A diagram of
your particular network is probably essential.
This site is maintained by W. David Laverell
of the Computer Science Department
at Calvin College. For assistance or corrections,
please contact him at .
