I may have misunderstood the PAN tech support rep, but I believe he told me about an hour ago that there is no garbage collection routine on expired DHCP leases in PanOS. First of all, did I misunderstand the rep, and if not, how are you handling cleanup of expired DHCP leases? Are you going out and clearing the dhcp leases periodically my manual CLI? Are there scripts out there that would do the cleanup? If so, how do you schedule them to run on PanOS?
Hello and thank you for yur question.
The PaloAlto device does not have a garbage script, instead we set the lease time and rely on the client side to renew in accordance with the RFC. The timer begins running as soon as the lease begins so even if your client was to receive an 8 hour lease, logout and walk away for 4 hours they clock is still running. Once the lease has expired the IP will be returned to the pool unless the client side renews the lease.
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