How do I stop clients connecting to the LAN Management (Core) network? Example:- HP Printer has a DHCP reservation on "Managers" LAN (set using the OC200 controller). Printer is physically connected...

Yes, I've tried that too. (Searching for archived logs and rebooting everything.)

@Clive_A Definitely no loop. And the problem moves around each switch. If I disable one, the blocking action moves to another AP and another switch.

Switch's port Gi1/0/2 was blocked. This happens every few minutes. Why? There is no loop in the network. Spanning tree is active. How do I find out which device is causing this block to happen?

@ChrisDV I tried searching in different time perids, but there are no logs in those periods.

I am getting chronic warnings about "The number of logs is up to the limit." I cleared all the logs, and within 4-5 minutes I got another warning. As far as I can tell, the logs store is empty, but I...