Using Controller Interfaces

Through its distribution system ports, a controller connects to multiple VLANs on the switched network. Internally, the controller must somehow map those wired VLANs to equivalent logical wireless networks. For example, suppose that VLAN 10 is set aside for wireless users in the Engineering division of a company. That VLAN must be connected to a unique wireless LAN that exists on a controller and its associated APs. The wireless LAN must then be connected to every client that associates with service set identifier (SSID) “Engineering”.

Cisco wireless controllers provide the necessary connectivity through internal interfaces. A controller interface is logical and must be configured with an IP address, subnet mask, default ...

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