Hello,
i am so sorry i did not explain well the situation. I have 2 controllers an old one wlcAIREOS and a new one catalyst 9800. The migration of the access point goes well, no problem for that.
I have some AGV it is automated guided vehicule who can not connect to the access point. In the capture i only see 1 M1 from the access point but no reply from the agv. So i can not not migrate those Access point to the new controller. But those agv works like before in the old wlc. The funny thing is there is others AGV a lot of them are connected well to the catalyst 9800. Only few of them who are the same model can not connect. Thanks again and take care.
Mina