Information
http://pubs.vmware.com/vsphere-51/topic/com.vmware.vsphere.networking.doc/GUID-EA78AD26-F099-4136-9EA6-AD60626D3EF7.html
Solution
1. From the Web or vSphere Clients.
2. Verify that Port Mirror destination interfaces are correct.
3. Edit the VDS properties and in the Port Mirror tab.
4. Configure the Destination VLAN, Port or Uplink ID's.
Default Value-Port-level configuration over-rides are disabled by default. This is the prescribed state.