If there are multiple devices in environment, collect the config files of all
devices as possible.
If there are multiple tagged VLAN in environment, make sure have the
switch config of VLAN settings are correct.
Make sure NXC is the only AP controller (replies to CAPWAP Discovery
Request) in the network.
1.3 Collect System Log
Collect System log via controller GUI.
Figure 6 MONITOR > Log > View Log or View AP Log
Check system log via Terminal Software.
Figure 7 Tera Term > NXC > Router# show logging entries