Changing external IP address on Cisco 1921 Router
Posted on 2016-11-16
We are in a situation where we are going to be moving to a different ISP and therefore, we would need to change our external IP addresses to 4 of our Cisco 1921 routers. Those routers are used only for VPN tunnels for our clients. Is there any suggestion how can we change our current public IP address given below references from our sh run:
ip address 220.127.116.11 255.255.255.240
ip default-gateway 18.104.22.168
ip route 0.0.0.0 0.0.0.0 22.214.171.124
can you direct me what are the commands to change the current IP address + gateway IP? Also, apart from sh run, do you think there is anything else I need to check in the router in relation to the external IP change?