I have several new R320 ap's and a vscg-E running 5.1.1.0.598 with AP Patch 2150 and cannot get these to join my VSCG and they are on the same subnet. Pretty frustrating . I have set the SCG to the VSCG's ip and also did a set director to the vscg'...
So how is your lag configured on each end and are you running loop protect and spanning-tree. If you are ssh'ed into the switch and monitor the pot that is not unplugged what happens to it. Turn on console logging and have the event logged dumped ...
Do not use version 9.0 yet it is not for production use yet. Stay on 8.95 or you will have issues and is not supported to connect to a controller for configuration either. Go back to 8.95.
Why did you put the vlans on separate ports verse creating a LAG? It would simplify any spanning-tree or loop protect issues especially if someone were to make a mistake adding vlan and it a port was to go down it would not affect the link being up ...
So did you create a LAG with those 3 ports and do you have loop protect and or Spanning-Tree enabled, and do you have a trunk/channel-group or LAG created on the other switch for aggregating these three ports and is loop protect and or Spanning-tree ...
