The Cisco 5520 Series wireless LAN controller is a highly scalable, service-rich, resilient, and flexible platform that is ideal for medium-sized to large enterprise & campus deployments. As part of the Cisco Unified Access Solution, the 5520 is optimized for the next generation of wireless networks, 802.11ac Wave 2. Location-aware Bonjour & Chromcast support services advertised across a Layer 3 network at a user & device level Software-defined segmentation with Cisco Trust Sec reduces access control list maintenance, complexity, & overhead Consolidate multiple controllers into one with a single point of touch Support centralized, distributed, & mesh deployments Deploy Cisco Flex Connect in sites with up to 100 access points in up to 1500 groups Sub-second failover for access point & client failover for uninterrupted application availability Dual-redundant Gigabit or 10 Gigabit Ethernet connectivity Solid state device-based storage-no moving parts Optional redundant, hot-swappable power supply for no incremental system downtime Enhanced system uptime with fast system restarts