Which switch load‑balancing mode is recommended for Cisco WLCs?

The source-destination IP address load-balancing mode is recommended for Cisco Wireless LAN Controllers (WLCs) because it provides a more granular and effective distribution of traffic. WLCs handle traffic from many clients, and using both source and destination IP addresses ensures that conversations between specific clients and servers are consistently mapped to the same link, preventing out-of-order packet delivery and improving performance. Using only destination IP address or destination MAC address would be less effective as it might not evenly distribute traffic from multiple clients communicating with the same destination. Source-destination MAC address is generally not preferred for IP-based traffic as MAC addresses are layer 2 and do not provide the same level of flow differentiation as IP addresses, especially in routed environments.