I am using 3912s in our dorms and I was able to get the Pass through port to work with both 802.1x and MAC auth. This is because the switch port handles the multi-auth. My p1,p2 and p3 ports are tied to a certain SSID which doesn't handle multi auth,...
We were purchasing Advanced Edge licenses until we learned later on that the Advanced Edge was included in the firmware versions 21 and up. We no longer have to purchase the license.
Thank you for this post, we are about to start a POC on Analytics and this is useless information that were going to also want to exclude. Look forward to input from the group and or Extreme Engineers.