Updating a ip nat routing entry in our C-881 router

[rdk_cisco1]

I think this is a very simple issue, but it has been over a  year since I had to modify our configuration and I'm a bit foggy as to the correct procedure.  I have the following entry in the FastEthernet4 interface:

ip nat inside source static tcp 10.0.1.51 80 12.34.56.78 8080 extendable

and I need to change it to:

ip nat inside source static tcp 10.0.1.51 8080 12.34.56.78 8080 extendable

At the router I enter these commands:

Office(config)#interface FastEthernet4
Office(config-if)#ip nat inside source static tcp 10.0.1.51 8080 12.34.56.78 8080 extendable

I get this response:
% similar static entry (10.0.1.51 -> 12.34.56.78) already exists

What is the right way to complete this operation. Thanks.

[marce1000]

 - Try to remove  the old one first with :

no ip nat inside source static tcp 10.0.1.51 80 12.34.56.78 8080 extendable

 M. 

[rdk_cisco1]

Thanks.  I was sure it was something very simple....RDK

[marce1000 · Accepted solution]

 - Tx, for positive feedback, but mark the thread as SOLVED too. This is not for my ego but can be useful for users browsing subject-lists on the forum.

 M.