Cisco AIR-CT2504-25-K9 Wireless LAN Controller

Model: AIR-CT2504-25-K9 Cisco 2500 Series Wireless Controller
Detail: Cisco 2500 Controller AIR-CT2504-25-K9 2504 Wireless Controller with 25 AP Licenses

Description of Cisco AIR-CT2504-25-K9 

Cisco 2500 Series Wireless Controllers are ideal for small to medium-sized enterprise and branch office. AIR-CT2504-25-K9 includes 15 access points licenses and delivers 802.11n performance and scalability in 1 Gbps throughput.

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Quick Specs of Cisco AIR-CT2504-25-K9 

Table 1 shows the Quick Specs.

Product Code AIR-CT2504-25-K9
Target deployments Small or midsize
Form Factor Desktop
Access points 25 licenses include
Max Access Points 75 licenses max
Max Client Support 1000
Ports 4 x 10/100/1000 ports
Console ports 10/100/1000 RJ-45
Wireless standards 802.11a/b/g/d/e/h/k/n/r/u/w/ac
Max throughput 1 Gbps
Max WLANs 16
Max VLANs 16
Redundant power No
Redundant fans Built-in fan
Max Power consumption 80W

Product Details of Cisco AIR-CT2504-25-K9 


CPU console port Power LED
2 GigE ports System LED
2 GigE POE ports Alarm LED
Reset button

· Do not connect a Power over Ethernet (PoE) cable to the console port. It will damage the controller.

Table 2 shows three LEDs description.

LED Color Description
Power LED Green Power is on
Off No power to the system
System LED Blinking Amber Boot-loader is active and waiting for user input from the system console.
Blinking Green Boot-loader or booting.
Green Normal System Operation.
Amber System failed the bootup process or an error caused the system to halt. A status or error message is posted on the console screen.
Off System not receiving power.
Alarm LED Blinking Green Controller image upgrading.
Amber Controller status activity, such as firmware upgrade.
Blinking Amber Controller error.


POWER 48VDC Cable Lock slot

AIR-CT2504-25-K9 Specification

Access points

25 licenses include (75 licenses max)

Device Type

Wireless controller


4 * 10/100/1000 ports

Console ports

10/100/1000 RJ-45

Wireless standards


Access point License

  • ● 1 AP licese: L-LIC-CT2504-1A
    ● 5 AP licese: L-LIC-CT2504-5A
    ● 25 AP licese: L-LIC-CT2504-25A

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


  • ●  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

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