One useful tool for diagnosing network troubles is the arp command — a tool which allows you to display the IP address to hardware (MAC) address mappings that a system has built so that it doesn’t ...

Jack Wallen shows you how to clear the Address Resolution Protocol cache and how to manage that cache with a few command switches. The Address Resolution Protocol (ARP) cache is a crucial component of ...

Cisco Catalyst 3750....when I do the "show arp" command, it tells me what vlan the macs are in. I don't care what vlan the mac is in, I need to know the physical port (fa1/0/3 for example). Any way to ...