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Cisco 5520 and 8540 Wireless Controller
Troubleshooting Guide
Overview of Cisco 5520 Wireless Controller
The Cisco 5520 Wireless Controller provides centralized control, management, and troubleshooting for
high-scale deployments in service provider and large campus deployments. It offers flexibility to support
multiple deployment modes in the same controller: for example, centralized mode for campus, Cisco
FlexConnect mode for lean branches managed over the WAN, and mesh (bridge) mode for deployments
where full Ethernet cabling is unavailable. As a component of the Cisco Unified Wireless Network, this
controller provides real-time communications between Cisco Aironet access points, the Cisco Prime
Infrastructure, and the Cisco Mobility Services Engine, and is interoperable with other Cisco controllers.
Cisco 5520 Wireless Controller Rear Panel View
1 Two Type A 3.0 USB ports
2 CIMC port 10/100/1000 Base-T
3 Serial COM Connector—Standard RS-232 Serial COM port using RJ-45 connector
4 Ethernet Service Port (SP)—Management 10/100/1000 Base-T
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