In this installment of the vSphere 5 How To series we’ll take a look at the new port mirroring feature in the vDS (vSphere Distributed Switch). Up until now you had to get a little fancy to do traffic sniffing and port spanning with the normal vSwitch or vDS. You could do it in hardware, assuming the traffic flowed across a hardware switch, or you could use the Cisco Nexus 1000v distributed switch. Now with vSphere 5 you can do it with the standard vDS.
Configuration for this is very simple. It is done from the configuration window for the main vDS. All you really have to do is set the source vDS port and your destination. You have two choices for destination: