AIR-CT8510-HA-K9CISCOAIR-CT8510-HA-K9 The Cisco 8500 Series Controller provides centralized control, management, and troubleshooting for high-scale deployments in service provider and large campus deployments. The 8500 Series provides 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.