Cisco Wireless LAN Controller (WLC) Features
Cisco Wireless LAN controller (WLC) module components, regardless of the device it is present in, allows you to centrally manage and configure a number of access points (APs) in a simplified manner. Most Cisco Wireless LAN Controllers (WLCs) support the following features:
Distribution system ports: These ports are used to connect the WLC to a network switch and act as a path for data.
Service port: This port is used as a management or console port. This port is active during the boot mode of the WLC.
Management interface: This interface is used for in-band management and provides connectivity to network devices (such as DHCP servers or Radius servers). If you want to connect to the controller's web management interface, it would be through this interface.
The management interface is assigned an IP address and is the initial point of contact for Lightweight Access Point Protocol (LWAPP) communication and registration.
AP-manager interface: This interface is used to control and manage all Layer 3 communications between the WLC and lightweight APs.
For the best AP association results, the AP-manager interface should be assigned to the same IP subnet as the management interface.
Virtual interface: This interface is used to support mobility management features, such as DHCP relay and Guest Web Authentication.
Service-port interface: This interface is used to communicate to the service port and must have an IP address that belongs to a different IP subnet than that of the AP-manager interface and any other dynamic interface.
Dynamic interfaces: These are VLAN interfaces created by you to allow for communication to various VLANs.