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High CPU utilization observed on Access Points
Unwanted VLANs not pruned at the port connecting the Switch to the AP.
Sometimes high CPU utilization is observed on the Cisco Access Point (AP). By default, all the VLANs are allowed onto the AP from the switch to which the AP is connected. This can create a problem, especially when applied to a huge network. If all of the VLANs are allowed onto the AP, it may result in high CPU utilization and hence the connectivity may get affected. Clients associated to the Access point will face throughput issues and sometimes high CPU utilization can also bring the Wireless network down.