So arp can display the table for name to Ethernet address resolution. That’s pretty easy, just run arp with a -a flag and it will show you all the other systems in your arp table. the table is managed dynamically. But what if you wanted to set one in there statically. Well, you could use the arp with a -s flag followed by the host name and then the ethernet address you want to assign for that host name. If you point a host name to an invalid address then you’ve poisoned your arp cache.
