Hey everyone and happy new year:
i have an issue concerning the wireless. It is quite interesting. I have an Wlc aireos and all devices are connecting to it. When i migrate the AP to a new wlc catalyst 9800 , only few devices are not connected. All are the same prototype they are robot but the one who are not connected are old prototype. I did a wireshark capture and i see all the frames going through but in the 4 way handshake only M1 is send from the AP and no answer form the device. I see a disassociation with a reason 4way handshake timeout. In the wlc AIREOS it works. I don’t know what to do. If some had this issue. Thanks again 