Link to home
Create AccountLog in
Avatar of DP230
DP230Flag for United Kingdom of Great Britain and Northern Ireland

asked on

Could not see NAT entry in Cisco Router

Dear Experts, I setup a static NAT entry on Cisco Router 3925, write memory after that, but when I hit: "show run | in ip nat", I could not find that entry but we can use that public IP address. Can you please suggest?
Avatar of Predrag Jovic
Predrag Jovic
Flag of Poland image

Beside typo in regex part:
- some other device is performing NAT
Avatar of DP230

ASKER

Yes, actually that network (let's say 192.168.77.0/24) was NAT over a pool of IP public (overload) and we configure static NAT a host (192.168.77.19) to use another public IP address.

When I issued command "show ip nat translations | inc 192.168.77.21", I could see the NAT translations via that IP public but could not find it in "show run" command. So is that Okay? or is that a bug? Can we fix it?
NAT configuration should be present in running configuration (even if it part of some VRF, and not part of global configuration), otherwise it should not NAT traffic. Maybe IOS do not accept space in REGEX (maybe should be written as sh run | i ip_nat

Check running configuration without REGEX, or try to issue just
sh run | i nat
If there is no NAT statements in running configuration, please, check if your traffic is tunneled. That would be the case if your traffic is sent to some other location and then sent to ISP from that location (being natted there).
ASKER CERTIFIED SOLUTION
Avatar of DP230
DP230
Flag of United Kingdom of Great Britain and Northern Ireland image

Link to home
membership
Create an account to see this answer
Signing up is free. No credit card required.
Create Account
Not sure how entry that was not there can be deleted.
;)
You're welcome.
Generally, there is no possibility to delete statement that is not present in configuration and re-add it.
Either, statement was present in configuration or not.