ARP Cache Tool

Overview
Purpose
Capabilities
Video
About ARP

About the ARP Cache Tool

The ARP Cache Tool lets you view and modify your computer's TCP/IP network ARP cache (ARP Table). ARP is a protocol that matches IPv4 addresses to MAC Addresses.

Related Tools

ARP Scan (MAC Scan) is now in a separate tool. It was part of this tool in older versions.
ARP Ping.
Packet Generator - has an ARP/RARP packet generating mode.
Network Neighbors - this is the IPv6 version that shows the neighboring devices.

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Version 11 ARP Cache Tool Slideshow

Purpose of this tool

View your computer's current ARP Cache (ARP Table).
Add static entries to the ARP Cache.
Delete any entry from the ARP Cache.

Tool Capabilities

Displays your ARP Cache.

Shows all entries in the ARP cache. Cache contents can be filtered by Local or Remote Interface IP address. The manufacturer of each remote device's network interface is shown. The hostname for each IP address can be optionally shown.

ARP Cache Editing.

Add a static entry to the ARP cache or delete any entry, static or dynamic from the ARP cache.

A video of the ARP Cache Tool in action.

What is ARP?

ARP (Address Resolution Protocol) is a protocol which associates an IPv4 address with a MAC (Media Access Control) address (xx-xx-xx-xx-xx-xx) over an ethernet network segment. ARP is normally not routed beyond a network segment. This tool uses WinPcap to generate ARP packets. See also the ARP Ping tool for Pinging a MAC/IP Address using ARP packets and the ARP Scan (also called MAC Scan or ARP Sweep) for finding hidden IPv4 devices.