Cisco 4331 Router
ip nat inside source static tcp 192.168.200.45 5000 interface GigabitEthernet0/0/0 5000
%Port 5000 is being used by system
what is the version of code running, i have seen someone reported before has some bug same kind?
This is a bug. Apparently you need to create overload rule first, then add static nat rules.
- remove all NAT statements
- drop in static NAT statements
- put in PAT/Overload NAT
check this thread may help you :
still, having an issue worth opening the TAC case to assist better.
yes, i am afraid, i can not simulate your issue, do not have ISR in hand now..raise TAC to get a quick fix.
I think you deleted your previous post, not sure if you have seen the last suggestion.
Check if your IOS supports the command below:
ip nat settings interface-overload block port tcp 5000
That would free the port to be used for static NAT. I do think you need a 16.x XE release for the command to be available, not sure about that...