Cisco router configuration newbie

[Guest_imported]

Our Frame Relay provider just called because they want us to change our WAN address and gateway on our Cisco 2500 Series router. I've never configured a router before and nobody knows what PC was originally used to configure it. So I assumed if I downloaded Config Maker from Cisco's website, I'd be able to use that. I installed it on a computer but I'm not sure how to use that program to change the IP address. I used the Auto Detect Device feature and it finds the router and gives me a log on page. I log on to it but don't know what to do from there. In some sections it doesn't show anything being configured on it and in others it shows the IP addresses on it and everything and when I close the program it asks me if I want to save changes. It looks more to me a way to make a diagram and not change configuration. I'm afraid if I do anything I will lose all the configuration. Please help me! I'm not sure how they configured this router before, whether through Config Maker, Command line or what???

 

[robbiear]

Hi Desilu,

The best method is thro command line.
For this you will need a console cable connected to the router and PC's serial port. Default settings are 9600, 8,None,1.
Use a terminal emulation package like teraterm or hyperterm.
Providing you know the passwords taht are set on the router type the following.
enable<cr>
sho run<cr>

This will then show you the running config on the router.
Cut and paste the output to notepad and save this somewhere as a backup.
Now paste the output to notepad again and locate the interface with the address that needs changing ie.

interface Serial1
bandwidth 2000000
ip address 192.168.30.1 255.255.255.0
no ip directed-broadcast
no ip mroute-cache
no fair-queue

You now need to insert 'no' at the start of the line beginning ip address as such,
no ip address 192.168.30.1 255.255.255.0

This removes the old ip address, and then on the following line insert the new address as follows,
ip address xxx.xxx.xxx.xxx xxx.xxx.xxx.xxx

Copy the entire file and again from the (config)#

type exit to leave configuration mode and then type &quot;copy run start&quot;

This save the config to flash and thats it, any problems let me know.

Regards

Robbiear

ACSE-CCNA-NNCSS