If you are interested in Cisco UCS (very cool stuff), FCOE, DCB, Nexus 1000v then this is a must read article from Scott Lowe.

http://blog.scottlowe.org/2010/03/21/how-niv-and-fcoe-play-together/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+slowe%2Fcontent%2Ffeed+%28blog.scottlowe.org+Content+Feed%29