Hi All,
i have an issue this morning. 5 sites, each has two units of 7210. the issue occur on one of the site with two local 7210.
the issue starts with users on the whole area with APs adopted to those controller cannot connect to the SSIDs. the controller's web GUI cannot be accessed (very slow, always loading), SSH can be access fine but sometime shows "Module STM is busy" when i try to run something.
i try to access second 7210 which can be opened fine unlike the first controller. I then remove the first controller from the network to force all APs to failover to the second controller. then all clients can continue to work well.
i try to check cpuload it says process which stm command using 100% of the CPU.
now the network work well with the second controller. when we try to connect the first controller back, the problem re-occur. even after a reboot.
i need guidance what to do next?
PS: attached the result from "show cpuload" and "show cpuload current"