When using this command as root in NSX Manager #corfu_tool_runner.py -n nsx -t LogicalSwitchState -o showTable > LSS.txt, all the associated VDS PortGroup are in SUCCESS state.
VMware NSX 4.2.0
Same symptoms can also be seen if hitting another known issue as explained in KB: Logical Switches in failed state upon upgrade to VMware NSX 4.1.x