Search this Blog

Friday, July 2, 2010

How do we remove Static NAT from 2801 Router?

We have Cisco 2801 router , which uses static NAT translation for third party vendors.The problem is that we are not able to remove the NAT entry from the 2801 router:
2801(config)#no ip nat outside source static

The router will take the command but nothing happens. 2801#show run | i , NAT is still available
ip nat outside source static

Tried adding another NAT to the existing line, then the result was:
2801(config)#ip nat outside source static
% similar static entry (> ) already exists

The router version is: Cisco IOS Software, 2800 Software (C2800NM-IPVOICEK9-M), Version 12.4(11)XJ4, RELEASE SOFTWARE (fc2)

There is nothing in the logs as well. What are the possible solutions to this problem?

Debugging steps -
  1. Restart 2801
  2. apply configuration change
  3. write memory
  4. restart 2801
  5. check running config.
Need a second restart, but don't stop if after first restart, it didn't apply to running config.

Reason that causes this problem:
It is a fault with the router hardware and/or IOS. the restart will clear out the clog and allow new changes to occur. The second restart is for good measure , although extremely rare, where the problem is that the IOS has problems applying the config and will keep having change problems until a change is made, applied, and restarted.

Citation - This blog post does not reflect original content from the author. Rather it summarizes content that are relevant to the topic from different sources in the web. The sources might include any online discussion boards, forums, websites and others.

No comments :

Post a Comment

/* Google Analytics begin ----------------------------------------------- */ /* Google Analytics end ----------------------------------------------- */