ARP Resolution · Advanced · ~8 min

ARP cache troubleshooting

Diagnose a stale ARP entry left behind after a server's NIC was replaced.

Host A192.168.1.15

Switch

Print server192.168.1.25

Host A has printed to 192.168.1.25 for months, but the last three jobs have silently failed. Its ARP cache still has an entry from before the print server's network card was replaced last week.