I'm running the Cisco freemium version of the Nexus 1000v virtual switch on my ESXi 4.1 boxen, mainly because I needed LACP uplink capability, which was not available in the vSwitch. Then I discovered that you can get SNMP stats on a per-vEthernet port (meaning per host!) from the 1000v. Sweet!
The poller takes a bit longer to run on the 1000v, just like it does on all other Nexus products, but well worth having the information. And yes, you can set up traffic accounting based on the polled information.
...Ron
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