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Misconfigured or expired ARP cache entries in the system might be one of the reasons for connection connectivity problems.

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Are you aware that clearing the ARP cache in your system may fix loading problems and connectivity errors?

This article will look at how to check and flush the ARP cache in the different operating systems.

But before that…

What is ARP cache?

This protocol works between the data link layer and data pipe layer.

This table is called ARP cache.

It contains a list of known IP addresses and their MAC addresses.

ARP request is a broadcast, and ARP reply is unicast.

When to scrub the ARP cache?

As a result, it may impact data pipe performance and may cause loading or connectivity problems.

During this process, the new entries will be saved in the ARP table.

How to erase the ARP cache?

We can easily erase the ARP cache in any operating system by using the command line.

Windows

Step 1:Open a command prompt and run it as an administrator.

Step 2:To view the ARP cache table, just pop in the following command.

This command displays the IP addresses, and its associated mac addresses.

Step 2:If you want to delete the ARP record for a particular address, use arp utility.

This command displays the whole arp table.

Mac

Step 1:Open aterminal in your mac and use the following commands.

Step 2:To view the existing ARP entries.

Your ARP cache table may need to be reconstructed again.

I hope you found this article helpful in learning how to reset the ARP cache in different operating systems.