When enabling, disabling, or changing LAG on a WLC, what requirement applies?
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Correct answer: The controller must be rebooted after enabling or reconfiguring LAG.
Why this is the answer
Enabling, disabling, or reconfiguring Link Aggregation (LAG) on a Cisco Wireless LAN Controller (WLC) requires a reboot for the changes to take effect. This is because LAG fundamentally alters how the WLC's network interfaces are presented to the operating system and how traffic is distributed, necessitating a full system restart to properly initialize these new network configurations. Incorrect options: Specifying incoming and outgoing ports for traffic flow is not a direct requirement for LAG itself; LAG handles port aggregation automatically. The management interface does not need to be reassigned when LAG is disabled; it retains its configuration. Multiple untagged interfaces on the same port are not supported; a port can only have one untagged VLAN.
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