Controlling ARP table entries on Windows

1. Displaying all ARP entries

arp -a

2. Adding a new ARP entry 

arp -s 99.99.99.99 11-22-33-44-55-66

To do this, make sure you run the Command Prompt as Administrator. Otherwise, this will show up:

Run as administrator as per below:

3. Deleting an ARP entry

arp -d 99.99.99.99

4. Deleting all ARP entries

arp -d -a