How to remove Static NAT from cisco 3845

shahid_duet · ‎07-14-2012

Dear boss

I am using cisco (C3845-ADVIPSERVICESK9-M), Version 12.4(11). some static nat is configured. Now i want to remove all nat and configure again.

i am using router# clear ip nat translation *

router (conf) # no ip nat .......... but no enty is beign delating.

How to detate all nat or single nat ????????

shahid

Sandeep Choudhary · ‎07-15-2012

To remove old NAT settings on Cisco router you need to

1)Clear all old NAT translations

router#clear ip nat translatiom *

2)Disable old NAT pool settings

router(config)#no ip nat pool public_access 200.100.10.33 netmask 255.255.255.252

3)And finally, disable the translation:
router(config)#no ip nat inside source list 1 pool public_access overload
From this point you can safely configure the new NAT settings.
or use this link:
http://www.phirebird.net/2009/07/cant-remove-ip-nat-entries-on-cisco-router-static-entry-in-use-cannot-remove/

http://www.cisco.com/en/US/tech/tk648/tk361/technologies_tech_note09186a0080094422.shtml

Cheers.

shahid_duet · ‎07-15-2012

Mr. sandeep

My nat is: ip nat inside source static 0.0.0.0 0.0.0.0

i did : router # no ip nat translation *

router(conf) # no ip nat inside source static 0.0.0.0 0.0.0.0

router ( conf-in)# no ip nat outside

but nat is not deleting. i alos reboot the router.

Still nat exist. what can i do now ????

Shahid

Sandeep Choudhary · ‎07-15-2012

have you deleteed the ip nat inside or outside from the interface configs????

Regards

shahid_duet · ‎07-15-2012

mr. sandeep

yes. i deleted ip nat inside or outside from all interface and tunnel

shahid

Sandeep Choudhary · ‎07-15-2012

HI Shahid,

read this article....

it should resolve your problem:

http://www.phirebird.net/2009/07/cant-remove-ip-nat-entries-on-cisco-router-static-entry-in-use-cannot-remove/

Regards

eddie.moore1058 · ‎05-31-2017

1st Q: when you did the "no ip nat...." did you do a "sh run | i nat" to see if the command took?

2nd Q: when you reboot the rtr, did you save config or no?

eddie.moore1058 · ‎05-31-2017

I guess I should check dates on topics to see when they were posted. 5 years ago... this should have been resolved by now. LOL!!! Sorry, 1st and 2nd post from a newB on this forum.