Yes, you are correct. You can view them from the systemshell (arp -a). NetApp advised me however, to not make any changes to the arp cache via systemshell and there are no commands in cluster shell. I am in a situation where my gateways are changing. Same VLAN and IP but different MAC. Action plan I was given was takeover/giveback of each node to clear arp tables.
Just came across this old reply I made and I wanted to post an update. I did not end up having to do a takeover/giveback. When the gateways were replaced there was a time period of about 2-3 minutes with no connectivity and then the new MAC's were learned. So yes, there was an out, but nothing that needed to be resolved w/ a takeover/giveback.