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Cisco Wireless LAN Controller Configuration Guide
OL-17037-01
Chapter 1 Overview
Operating System Software
Multiple-Controller Deployments
Each controller can support lightweight access points across multiple floors and buildings
simultaneously. However, full functionality of the Cisco Wireless LAN Solution is realized when it
includes multiple controllers. A multiple-controller system has the following additional features:
•
Autodetecting and autoconfiguring RF parameters as the controllers are added to the network.
•
Same-Subnet (Layer 2) Roaming and Inter-Subnet (Layer 3) Roaming.
•
Automatic access point failover to any redundant controller with a reduced access point load (refer
to the
“Cisco Wireless LAN Controller Failover Protection” section on page 1-16
).
Figure 1-3
shows a typical multiple-controller deployment. The figure also shows an optional dedicated
Management Network and the three physical connection types between the network and the controllers.
Figure 1-3
Typical Multi-Controller Deployment
Operating System Software
The operating system software controls controllers and lightweight access points. It includes full
operating system security and radio resource management (RRM) features.