The Cisco AIR-CT5520-50-K9 5520 Wireless LAN Controller is an enterprise-grade WLAN platform licensed for 50 access points and scalable to 1500 APs, supporting up to 20,000 clients with 20 Gbps throughput for high-density campus and multi-site deployments. It features flexible uplink connectivity with 2x10 Gigabit Ethernet SFP+ or 2x1 Gigabit Ethernet SFP interfaces, along with dedicated service and redundancy ports, CIMC management, and RJ-45 console access for streamlined deployment and maintenance. Centralized management simplifies SSID configuration, VLAN segmentation, QoS enforcement, and seamless roaming across distributed networks. Security capabilities include CAPWAP with DTLS encryption, 802.1X authentication, RADIUS integration, and TACACS+ administrative control. High availability with stateful switchover ensures subsecond failover for mission-critical environments. Management is available through web-based HTTP/HTTPS interface, SSH/Telnet CLI, SNMP monitoring, and integration with network management platforms. Designed for modern Wi-Fi 5 and Wi-Fi 6 environments, it delivers scalable performance, visibility, and control for enterprise wireless infrastructure.
| Model | Cisco AIR-CT5520-50-K9 |
| Series | Cisco 5520 Wireless Controller |
| AP licenses included | 50 access points |
| Max APs | Up to 1500 access points |
| Max clients | Up to 20000 clients |
| Max throughput | 20 Gbps |
| Uplink interfaces | 2 x 10 Gigabit Ethernet or 2 x 1 Gigabit Ethernet |
| Service port | 1 x 1 Gigabit Ethernet |
| Redundancy port | 1 x 1 Gigabit Ethernet |
| CIMC management port | 1 x 10/100/1000 Ethernet |
| Console port | Serial RJ-45 |
| Management | HTTP HTTPS Telnet SSH Cisco Prime Infrastructure |
| Wireless standards | 802.11a b g d e h n k r u w ac Wave 1 Wave 2 802.11ax |
| VLANs | 4096 |
| Max power | 190 W |
| Form factor | 1RU rack mount |
| Dimensions | 18.98 x 30.98 x 1.70 in |
| Weight | 30 lbs |