For those that missed it, a highly warranted document highlighting VI3 in Cisco environments was released a few weeks ago. Capturing such topics as vSwitch loop prevention, MDS port group selection, Native VLANs, and U/V shape Switch designs, to name a few. To my surprise there was no mention of VFrame, regardless this paper covers alot of ground and is a welcome addition. Enjoy...

http://www.vmware.com/files/pdf/vmi_cisco_network_environment.pdf