Editing Switch Control (section)

= Add/remove ARP entry to 3750 =

Note, you'd only ever want to add a static arp if you have an issue where some customer is trying to grab the wrong IP and the 3750 is allowing the arp to exist/map to the wrong IP. If you cannot stop the bad customer from grabbing the IP, you'd want to tell the 3750 to make the arp to the right mac. Once this issue is resolved with the bad customer, you'd want to remove the static arp entry so if the IP ever goes to another customer/nic, you won't have unexplained issues with the IP not working.

Add an arp:
<pre>E-mon-3750#conf t
E-mon-3750(config)#arp 69.55.230.6 000d.5d03.5802 arpa
E-mon-3750(config)#exit
E-mon-3750#arp 69.55.230.6 000d.5d03.5802 arpa
E-mon-3750#show arp | include 000d.5d03.5802
Internet  69.55.230.6             -   000d.5d03.5802  ARPA</pre>

To clear:
<pre>conf t
no 69.55.230.6 000d.5d03.5802 arpa
end</pre>