NAT + DIPP question


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L1 Bithead

NAT + DIPP question

Hi - we have experienced an issue where users in a certain zone were having intermittent problems accessing the internet. We speculated that there could be a NAT issue, and the pool might be full, or translations just werent working. The pool is large and it shouldn't be fillling up.


As a troubleshooting step, we enabled overload / DIPP on the NAT rule, and the issue appeared resolved.


When we use the CLI command; show running ippool | match <Pool_Name> we can see that even though there is NAT addressing available, the Overload/DIPP address is being used. Is this expected behaviour? We are only around <50% utilization of the pool? I know i can raise a support case, but was interested if anyone has thoughts on why this would happen.


Palo NAT question.png


Any further troubleshooting steps that i could take to work out what is going on here?


Thanks in advance for any thoughts on this. 

Tags (3)
L7 Applicator

could you share how your NAT is configured?
Tom Piens -
New to PAN-OS or getting ready to take the PCNSE? check out
L1 Bithead

NAT pool 2.png

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