ARP Table

What is ARP?

Address Resolution Protocol (ARP) is a protocol for mapping an Internet Protocol address (IP address) to a physical machine address (MAC) that is recognized in the local network.

The following information is displayed on the ARP Table:

• IP address of the connected device
• The corresponding MAC ID
• Interface on which that device is connected
• Type of entry whether complete, incomplete, dynamic or static.

Above mentioned ARP details will show in ARP table - Firewall/Router/Network Device

If you want to check ARP table into system.

Some devices can have one, but not the other. For example, a device that operates at Layer 2 only, like a Layer 2 switch, will have a MAC address table, but no ARP table – it has no need to translate addresses between Layer 3 and Layer 2.

How to create ARP tables?

ARP tables are often created automatically through the ARP call and response process discussed earlier. There may however be times when manual changes to the ARP table need to be made. Make sure you understand the implications of these modifications for the network, and that you follow the correct procedure for adding or removing manual entries, which may differ slightly from device to device.

ARP entries can be changed using a command-line interface (CLI) or the device's graphical user interface (GUI). The approach for each will differ slightly, but the steps and information needed to alter the entries are generally the same.

We can manually view/add/modify/delete/flush ARP entries in the ARP Table.

https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/arp