We've hit a problem with our PA-500. The ARP table holds a maximum of 500 entries, meaning that when MAC 501 tries to get to the internet, it can't. Is there any way to reduce the number of MAC ...
You are confusing an ARP with the contacts of the MAC address table. To find devices, you need both. The ARP table will tell you the IP to MAC address mapping. You get this from the router or L3 ...