A distribution system (DS) port is a physical wireless LAN controller network port that connects the controller to the wired distribution system. It is distinct from a WLC interface, which is a logical entity. section 21.2.1 section 21.4
Key operational facts:
- DS ports can participate in a link aggregation group (LAG) to provide increased bandwidth and redundancy. section 21.2.1
- When link aggregation is enabled, all WLC DS ports belong to the LAG by default, although only one functioning physical port is required for operation. section 21.2.1 section 21.4
- The available port types depend on the WLC model; one example has four DS ports and no service or redundancy ports. section 21.2.1
WLC-to-switch connection
WLC1 connects to SW1 through DS ports 1 and 2, forming the LAG that carries the controller’s distribution-system connectivity. section 21.2.1
Figure 21.9 WLC ports and interfaces. Ports are physical connectors that connect to other devices, and interfaces are logical entities in the WLC.
Use the port-and-interface figure to distinguish physical DS ports from logical WLC interfaces. section 21.2.1
