Cisco 5520 Wireless Controller  AIR-CT5520-K9
Product Code    AIR-CT5520-K9

Chassis Height    One rack-unit (1RU)

Throughput    20 Gbps

AP Support    1500 (with licenses)

Client Support    20000 (with licenses)

Data Ports    2 x SFP+

Wireless standards    802.11a/b/g/d/e/h/k/n/r/u/w/ac

Power Options    770W AC

Dimension (D × W × H)    75.8 cm × 42.9 cm × 4.3 cm

Device Type    Wireless controller

Ports    Dual 1-Gb or 10-Gb ports with Link Aggregation Group

Console ports    10/100/1000 RJ-45

Wireless standards    802.11a/b/g/d/e/h/k/n/r/u/w/ac

License
    ● 5 AP licese: L-LIC-CT5520-5A
● 25 AP licese: L-LIC-CT5520-25A
● 50 AP licese: L-LIC-CT5520-50A
● 100 AP licese: L-LIC-CT5520-100A
● 250 AP licese: L-LIC-CT5520-250A
● DTLS License: L-LIC-CT5520-DTLS-K9

Security standards
    ●  Wi-Fi Protected Access (WPA)
●  IEEE 802.11i (WPA2, RSN)
●  RFC 1321 MD5 Message-Digest Algorithm
●  RFC 1851 The ESP Triple DES Transform
●  RFC 2104 HMAC: Keyed Hashing for Message Authentication
●  RFC 2246 TLS Protocol Version 1.0
●  RFC 2401 Security Architecture for the Internet Protocol
●  RFC 2403 HMAC-MD5-96 within ESP and AH
●  RFC 2404 HMAC-SHA-1-96 within ESP and AH
●  RFC 2405 ESP DES-CBC Cipher Algorithm with Explicit IV
●  RFC 2406 IP Encapsulating Security Payload (ESP)
●  RFC 2407 Interpretation for ISAKMP
●  RFC 2408 ISAKMP
●  RFC 2409 IKE
●  RFC 2451 ESP CBC-Mode Cipher Algorithms
●  RFC 3280 Internet X.509 PKI Certificate and CRL Profile
●  RFC 3602 The AES-CBC Cipher Algorithm and Its Use with IPsec
●  RFC 3686 Using AES Counter Mode with IPsec ESP
●  RFC 4347 Datagram Transport Layer Security
●  RFC 4346 TLS Protocol Version 1.1

Encryption
    ●  WEP and Temporal Key Integrity Protocol-Message Integrity Check (TKIP-MIC): RC4 40, 104 and 128 bits (both static and shared keys)
●  Advanced Encryption Standard (AES): CBC, CCM, Counter Mode with Cipher Block Chaining Message Authentication Code Protocol (CCMP)
●  DES: DES-CBC, 3DES
●  Secure Sockets Layer (SSL) and Transport Layer Security (TLS): RC4 128-bit and RSA 1024- and 2048-bit
●  DTLS: AES-CBC
●  IPSec: DES-CBC, 3DES, AES-CBC

Authentication, Authorization, and Accounting (AAA)
    ●  IEEE 802.1X
●  RFC 2548 Microsoft Vendor-Specific RADIUS Attributes
●  RFC 2716 PPP EAP-TLS
●  RFC 2865 RADIUS Authentication
●  RFC 2866 RADIUS Accounting
●  RFC 2867 RADIUS Tunnel Accounting
●  RFC 3576 Dynamic Authorization Extensions to RADIUS
●  RFC 3579 RADIUS Support for EAP
●  RFC 3580 IEEE 802.1X RADIUS Guidelines
●  RFC 3748 Extensible Authentication Protocol
●  Web-based authentication
●  TACACS support for management users