vDS health check

Anyone play around with vDS health check in 5.1 or 5.5? Pretty cool stuff. I had a suspicion VCD-NI wasn't working due to MTU mismatch. Enabled the health check and sure enough I get bunch of MTU mismatch alarms.

For anyone interested, here's the VMware KB: VMware KB: Enabling vSphere Distributed Switch health check in the vSphere Web Client