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Changing the WAN IP address on a Cisco 17xx

Could someone help me out with reconfiguring my WAN IP (ISP's edge router) address on my Cisco 1721? My ISP is changing the IP on their edge router.

I have little knowledge of configurating this box, but all the help you could give me would be much appreciated.

Thanks.

GG

2 REPLIES

Re: Changing the WAN IP address on a Cisco 17xx

Hi GG

Ru trying to change the wan port ip remotely or from u r network where u r routers ethernet is connected ???if u r doing from u r end itself then go into the serial interface where u r ISPs link is geting terminated.change the ip address to the new one given by u r isp.correspondingly u need to change the ip routes wrt to your new ip scheme.

ROUTER#conf t

Enter configuration commands, one per line. End with CNTL/Z.

ROUTER(config)#int ser 0/1

ROUTER(config-if)#ip address x.y.z.z x.x.x.x

ROUTER(config)#Ctrl+Z

ROUTER#

Regds

Prem

Gold

Re: Changing the WAN IP address on a Cisco 17xx

Hi,

The config from the other post is correct BUT don't forget to write to memory after config change i.e. write memory or (short hand) wr m

Hope this helps -

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