Cisco Systems OL-7426-03 quick start Multiple-Cisco Wireless LAN Controller Deployments

Multiple-Cisco Wireless LAN Controller Deployments

Each Cisco Wireless LAN Controller can support Cisco 1000 Series lightweight access points across multiple floors and buildings simultaneously. However, full functionality of the Cisco WLAN Solution is realized when it includes multiple Cisco Wireless LAN Controllers. That is, a multiple-Cisco Wireless LAN Controller system has the following additional features over a single-Cisco Wireless LAN Controller deployment:

•Autodetecting and autoconfiguring Cisco Wireless LAN Controller RF parameters as the Cisco Wireless LAN Controllers are added to the network, as described in Radio Resource Management (RRM).

•Same-Cisco Wireless LAN Controller (Layer 2) Roaming and Inter-Subnet (Layer 3) Roaming.

•Automatic Cisco 1000 Series lightweight access point failover to any redundant Cisco Wireless LAN Controller with unused ports (refer to Cisco Wireless LAN Controller Failover Protection).

The following figure shows a typical multiple-Cisco Wireless LAN Controller deployment. The figure also shows an optional dedicated Management Network, and the three physical connection types between the network and the Cisco Wireless LAN Controllers, as further described in Network Connections to Cisco Wireless LAN Controllers.

Note: Cisco Wireless LAN Controller can connect through the Management Interface to multiple subnets in the Network. This can be helpful, for instance, when Cisco WLAN Solution operators want to confine multiple VLANs to separate subnets using Operator-Defined Interfaces.

Figure - Typical Multiple-Cisco Wireless LAN Controller Deployment

5/26/05	Multiple-Cisco Wireless LAN Controller Deployments
OL-7426-03