[c-nsp] Cisco - ip arp track

[Tom Lusty]

Does anyone have any info on what the command "ip arp track" does on a catalyst switch?  (3750, and 4500 in my situation)

I'm familiar with DAI and the other L2 security technologies, and can guess at what this command does, but I've yet to find any official documentation to confirm that.  None of the command references I've looked at seem to contain info on this command.

Any help would be greatly appreciated!
-Tom