When LAG is enabled on a WLC, which interface is limited to a single instance?
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Correct answer: AP-manager.
Why this is the answer
When Link Aggregation Group (LAG) is enabled on a Wireless LAN Controller (WLC), the AP-manager interface is limited to a single instance. This is because the AP-manager interface is responsible for managing the communication between the WLC and all Lightweight Access Points (LAPs). With LAG, the WLC presents a single logical interface to the network, and the AP-manager interface leverages this single logical interface for all AP communication, preventing the need for multiple instances. Other interfaces like service, virtual, and trunk can have multiple instances or are not directly constrained to a single instance by LAG in the same manner as the AP-manager interface.
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