How is Link Aggregation implemented on a Cisco Wireless LAN Controller regarding client traffic?

Link Aggregation (LAG) on a Cisco WLC bundles multiple physical ports into a single logical EtherChannel. While LAG provides redundancy and increased throughput, the WLC can still pass client traffic even if only one physical port within the LAG bundle is functional. The primary benefit of LAG is fault tolerance; if one port fails, traffic continues over the remaining active ports. The WLC's bandwidth does not inherently drop to 500 Mbps when LAG is enabled; rather, the aggregated bandwidth increases. Configuring EtherChannel in "active" mode (LACP) is a common implementation, but it's not strictly required for the WLC to pass client traffic if LAG is configured. The key is that the logical interface remains up as long as at least one physical port in the bundle is operational.