In Windows, the Address Resolution Protocol (ARP) is a critical part TCP/IP network communication. While using the Internet or even a local area network (LAN), you may have experienced issues with connections not being made, or loss of ping. Often this is because of a physical network problem; however, another cause often overlooked is the ARP cache.
From the command prompt, the ARP Command has the functionality to add, delete, or display MAC Address to IP translation.
How To Clear The ARP Cache in Windows
1. Click the Windows Start Menu Orb and Type cmd into the search box. Right-Click cmd.exe and Click Run as administrator
2. In the prompt that appears, Type in the following command:
netsh interface ip delete arpcache
Other ARP commands:
|arp -a||Display a list of ARP entries|
|arp -d <ip #>||Delete an IP address from the ARP table|
|arp -s <ip #> <mac #>||Add a static IP to a MAC address in the ARP table|
|Example: arp -s 220.127.116.115 00-FF-23-44-d7-11|
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