Cisco 2503 - does not accept IP

[nwaterworth]

Hi,

Just acquired a 2503 router which I need short term, and it won't accept any IPs on the internal subnet it's attached to. Intended address is 128.0.16.x with mask 255.255.240.0. The config gives %Bad IP address% before it's even asked about masking. IOS is v11.2. 128.1.16.x is fine.

I admit it's probably not the best addressing scheme (i borrowed it from the company I used to work for), but does anyone know a workaround. Otherwise it's reassigning addresses to a lot of units, many on static addresses.

Would appreciate any help, or even a good reason for the failure. Would an IOS upgrade help?

Sorry, new to the Cisco world.

Cheers,
Neil

 

[MarcusInDallas]

It loks like the ip address should work. Cisco is using IOS version 12.3 and it never hurts to upgrade unless your equipment/components doesn't support the new IOS.

Try the command "sh run" and see if you have an ip address for the ethernet card already in use.

Or try another ip address.

 

[nwaterworth]

Thanks for your reply. The second 2503 router turned up today running IOS 11.3, as opposed to 11.2. No problems there with the IP, so I think an upgrade is a good first step.

I'm running the config from the prompts after a write erase/reload.

Thanks for the help.

 

[nwaterworth]

Fixed it with an upgrade to 11.3. Thanks.