Accessing different networks

[arnab77inkol]

Dear Friends,

My requirment is say if remote office is using 10.x.x.x network and HO at remote end is using 10.x.x.x network.Everthing is properly routed so that now remote office is able to work with HO.Now remote office LAN is entirely changing to 192.168.x.x network.Now what all changes has to be done on the remote network router as well as HO Router?? Any changes has to be done in the intermediate WAN ? How will this 192.168.x.x will acess HO's 10.x.x.x ? Please clarify me.. any way to access...

[rjackson]

It depends on if the 10.x.x.x networks are subnetted and you are running routing protocols.

Typically all you need is a static route at each end pointing to the other network through the wan link. That way each router knows how to reach the other network. If the address on the remote routers wan link is 1.1.1.1 then the HO router would say

ip route 192.168.0.0 255.255.0.0 1.1.1.1

the mask may be different depending on what mask you use in the 192.168. network.

The remote would have

ip route 10.0.0.0 255.0.0.0 1.1.1.2 if the serial address on the HO router is 1.1.1.2. Again the mask on the 10. network needs to be set according to what you are using.