ARP Table on ESX 4.1/5.0

VMware has the CLI pretty locked down on ESX version 4.1 and later (as compared to the commands that were available in 4.0).  The following can be used to view the ARP table in later versions:

esxcli network neighbor list

Reference: http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1008184