![]() If you want as close to a real time view as you can get you'd want to clear out the ARP table ("/ip arp remove ") - this is harmless to do as the router will discover the ARP mapping for any destination it has to send traffic to - and then watch entries populate back. The ARP table is the most up to date information you can get on who is on the network. ![]() Without the ARP mapping being correct hosts wouldn't be able to talk. ARP tables map the IP addresses of directly connected hosts to MAC addresses, and time out relatively aggressively so that the tables don't contain stale entries for hosts that no longer are on the network - after all a different host could show up and get the same IP address as a host that left. MAC addresses are what switches use to find destination hosts. In TCP/IP broadcast networks each host has a layer 2 address (its MAC address), which is used by directly connected hosts to talk to it. ![]() ![]() It has nothing to do with DHCP leases - static IP hosts would show here, too. The ARP table is where a router maps MAC addresses to IP addresses. ![]()
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