How To Change Router configuration from NAT to Routing : cisco

How To Change Router configuration from NAT to Routing : cisco

1.Need login Router and first need to change existing Private IP in LAN interface to Public IP with appropriate subnet .

2. After Change (Private To Public IP) we need to remove all NAT command and related access list which supporting NAT in Router .

Command which need to remove as following:

No ip nat inside (from LAN interface)
No ip nat outside (From WAN interface normally -VLAN1)
Remove NAT access list : no ip access-list standard for_NAT
Disable DHCP if existing in preconfiguration.


3. Then we need to reboot LAN interface through shut and no shut command so that changes will come into effect and client need to do required changes in his end on own device.

4. After That when connection backup we need to check internet through router and for that we can ping our DNS server IP (209.250.128.6 or 209.250.128.8) through extended source as following:

ping 209.250.128.6 source f0

Here f0 we are assuming client LAN interface

5. If we are able to go outside means changes in configuration is ok otherwise we need to check configuration changes again carefully .