Routing between Class C and Class A

[boschrexroth]

I want confirmation that my thought process is correct.

I currently have several Class C networks (192.9.X.X) running at various regional offices and want to change over to a 10.x.x.x network.

Can I change one regional office at a time to 10.X.X.X. while leaving the other office at 192.9.X.X. as long as I add the 10.X.X.X to my EIGRP config and still have fully connectivity between them. All office are running Cisco 3600 series routers.

Thanks,

Scott

[luyang]

I think you are right.

[jahil]

I think if you are using EIGRP then there should not be any issues regarding calss C and A, the only thing you have to take care is that Your Router Local Ethernet should be properly address and EIGRP config should contain network 10.0.0.0.

another way you can test this is to add this network in your routing topology and place a workstation on this network, you have to assign a sec address to your ethernet for the gateway and then you can test all the services with that Workstation.

Hope this will help

Regards