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How to remove Static NAT from cisco 3845


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 ????????



Sandeep Choudhary
VIP Mentor VIP Mentor
VIP Mentor

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 netmask

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:


Mr. sandeep

My nat is: ip nat inside source static

i did  : router # no ip nat translation *

          router(conf) # no ip nat inside source static

          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 ????


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


mr. sandeep

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


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?

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.  

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