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14 Review(s)
| 10 answered questions
Model: AIR-CT2504-5-K9 Cisco 2500 Series Wireless Controller
Detail: Cisco 2500 Controller AIR-CT2504-5-K9 2504 Wireless Controller with 5 AP Licenses
List Price: US$1,295.00
Price: $612.00
You save: US$683.00 (53% OFF)
Condition: Brand New Sealed
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US$ 612.00 In stock Brand New Sealed

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Overview (AIR-CT2504-5-K9)

Cisco 2500 Series Wireless Controllers are ideal for small to medium-sized enterprise and branch office. AIR-CT2504-5-K9 includes 5 access points licenses and delivers 802.11n performance and scalability in 1 Gbps throughput.

Quick Specs

Figure 1 shows the appearance of AIR-CT2504-5-K9.


Table 1 shows the Quick Specs.

Product Code


Target deployments

Small or midsize

Form Factor


Access points

5 licenses include

Max Access Points

75 licenses max

Max Client Support



4 x 10/100/1000 ports

Console ports

10/100/1000 RJ-45

Wireless standards


Max throughput

1 Gbps





Redundant power


Redundant fans

Built-in fan

Max Power consumption


Product Details

Figure 2 shows the front panel of AIR-CT2504-5-K9.

AIR-CT2504-5-K9 Front Panel


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.




Power LED


Power is on


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.


Normal System Operation.


System failed the bootup process or an error caused the system to halt. A status or error message is posted on the console screen.


System not receiving power.

Alarm LED

Blinking Green

Controller image upgrading.


Controller status activity, such as firmware upgrade.

Blinking Amber

Controller error.

Figure 3 shows the back panel of AIR-CT2504-5-K9.

AIR-CT2504-5-K9 Back Panel



Cable Lock slot

The Licenses

Table 3 shows some recommended licenses for this wireless controller.




Cisco 2500 Wireless Controller Accessory - AIR-CT2504-RMNT 2504 Wireless Controller Rack Mount Bracket for Cisco 2500


Cisco 2500 Wireless Controller License - L-LIC-CT2504-1A 1 AP Adder Licenses for 2504 WLAN Controller for Cisco 2500


Cisco 2500 Wireless Controller License - L-LIC-CT2504-5A 5 AP Adder Licenses for 2504 WLAN Controller (e-Delivery) for Cisco 2500


Cisco 2500 Wireless Controller License - L-LIC-CT2504-25A 25 AP Adder Licenses for 2504 WLAN Controller (e-Delivery) for Cisco 2500

Compare to Similar Items






Access Points





Max Access Points





Max Client Support






4 x 10/100/1000 ports

4 x 10/100/1000 ports

4 x 10/100/1000 ports

4 x 10/100/1000 ports

Get more information

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Specification (AIR-CT2504-5-K9)

AIR-CT2504-5-K9 Specifications

Access points 

5 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)
●  Secure Sockets Layer (SSL) and Transport Layer Security (TLS): RC4 128-bit and RSA 1024- and 2048-bit

Authentication, Authorization, and Accounting (AAA)

●  IEEE 802.1X
●  RFC 2548 Microsoft Vendor-Specific RADIUS Attributes
●  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


● Does not support wired guest access
● Cannot be configured as an auto anchor controller. However you can configure it as a foreign controller
● Supports only multicast-multicast mode
● Does not support bandwidth contract feature
● Does not support access points in direct connect mode
● Does not support service port
● Apple Talk Bridging
● Wired Guest

Faq (AIR-CT2504-5-K9)

What is a wireless LAN controller (WLC)?

Wireless networks have become a necessity today. Many corporate environments require deployment of wireless networks on a large scale. Cisco has come up with the concept of the Cisco Unified Wireless Network (CUWN) solution, which helps make it easier to manage such large scale deployments. WLC is a device that assumes a central role in the CUWN. Traditional roles of access points, such as association or authentication of wireless clients, are done by the WLC. Access points, called Lightweight Access Points (LAPs) in the unified environment, register themselves with a WLC and tunnel all the management and data packets to the WLCs, which then switch the packets between wireless clients and the wired portion of the network. All the configurations are done on the WLC. LAPs download the entire configuration from WLCs and act as a wireless interface to the clients. For more information on how a LAP registers with a WLC, refer to the document Lightweight AP (LAP) Registration to a Wireless LAN Controller.

Does AIR-CT2504-5-K9 support AVC?

Yes, it supports. AVC is currently supported on Cisco 2500, 5500, and 8500 Series Wireless Controllers; Cisco Flex 7500 Series Wireless Controllers; and Cisco Wireless Services Module 2 (WiSM2) when deployed in central mode (formerly local mode running AireOS Version 7.4 or greater).

Do I need a special license to use the AVC feature over a Cisco wireless network?


How many applications does AVC recognize?

AVC currently recognizes thousands of applications, including voice/video, email, file sharing, gaming, and peer-to-peer (P2P) applications.

What management tools can we use with AVC?

AVC supports reporting using Cisco Prime Infrastructure with Assurance module.

Is Cisco Prime infrastructure or Cisco Prime NAM mandatory for the AVC solution?

No, it is not a mandatory requirement for enabling and using the AVC solution. The Cisco wireless controller web GUI itself provides configuration menus and reporting charts for enabling AVC and monitoring the wireless network. However, Cisco Prime infrastructure is recommended because it can be used across wired devices such as Cisco ASR 1000, Cisco Integrated Services Routers (ISRs), and Cisco wireless networks.

How many WLANs are supported on WLC?

Since software version, WLC can now control up to 512 WLANs for lightweight access points. Each WLAN has a separate WLAN ID (1 through 512), a separate profile name, and a WLAN SSID, and can be assigned unique security policies. The controller publishes up to 16 WLANs to each connected access point, but you can create up to 512 WLANs on the controller and then selectively publish these WLANs (using access point groups) to different access points to better manage your wireless network.

How can I configure VLANs on my Wireless LAN Controller (WLC)?

In the WLC, VLANs are tied to an interface configured in a unique IP subnet. This interface is mapped onto a WLAN. Then, the clients that associate to this WLAN belong to the VLAN of the interface and are assigned an IP address from the subnet to which the interface belongs. In order to configure VLANs on your WLC, complete the procedure in the VLANs on Wireless LAN Controllers Configuration Example.

What is the validity period of manufacturer installed certificates (MICs) on a wireless LAN controller and of the lightweight AP's certificates?

The validity period of a MIC on a WLC is 10 years. The same validity period of 10 years applies to the lightweight AP's certificates from creation (whether it is a MIC or a Self-Signed Certificate (SSC)).

Do Wireless LAN Controllers support both SSHv1 and SSHv2?

Wireless LAN Controllers support only SSHv2.

Shipping & Payment


Cargo will be delivered within 1 day after payment arrived. Tracking Number will be offered once delivery done.

Delivery OptionsEstimated Delivery Time
DHL 2-4 business days
Fedex 2-4 business days
Hong Kong EMS 5-10 business days
Hong Kong Air Parcel 10-20 business days
By Sea 10-20 business days


Above mentioned information are just for your reference only,we will keep you posted for the tracking delivery schedule.There are two delivery options available for by air and by sea:

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Item conditions are "New Sealed" or "Used / Refurbished".
Used & refurbished items are fully tested with good conditions by Cisco-certified Engineers.

Free CCIE Technical Support:

Our FREE Cisco CCIE Expert Consultancy Support is over the phone, by chat, by email or by login remotely.

100% Money Back Guarantee:

You can contact our customer service team to exchange or return any product that you bought from us.

Flexible Secure Payment & Shipment:

Verified authorization: Mcafee Secure, VeriSign Secured

Return Material Authorization (RMA) Process

Standard Hardware Warranty Policy:

Original new sealed Cisco product: 1 Year
Used Cisco product: 3 Month

The Support Contacts:

If your Cisco products failed, you must contact your sales representative to verify product failure. If the problem still can't correct by remote support methods i.e. email or phone support, the RMA procedure will issue.


Customer Reviews

4.9 5
4.9 (14 reviews)
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars

Share your thoughts with other customers?

Posted on 12/19/2016
Verified Buyer

It does work well for our network.

Posted on 10/13/2016
Verified Buyer
Free CCIE, Wonderful!

Our office have several Cisco APs, but we don't know how to select controller. This supplier supports free CCIE, and helped us select the suitable wireless controller. Thanks for your good services!!!

Posted on 9/5/2016
Verified Buyer
Cisco new product

The item is 100% Cisco original new, new sealed packing

Posted on 8/15/2016
Verified Buyer
I have bought the device about 2 months already

I have bought the device about 2 months already, but I thinking, how do I able get to download the IOS image or firmware since CISCO does not release its IOS to private owner ?

Posted on 7/19/2016
Verified Buyer
Excellent for SMB

This WLC is excellent for small offices likes us. Easy to handle and configure. But ones you put to work is excellent to manage the AP on the office and SSID. 0 complaints about

Posted on 11/8/2015
Verified Buyer
Convenient payment way

WU,TT, credit card and paypal all OK, very convenient.

Posted on 11/8/2015
Verified Buyer
Adequate inventory

Many produts aways have stock, ship out quickly, they are our procurement preferred

Posted on 9/18/2015
Verified Buyer
Una empresa fuerte

Viejo socio, muy bueno. Tienen 15 a?os de historia, desarrollo continuo.

Posted on 9/18/2015
Verified Buyer
Controller with 5 AP

OK, I will add adder license to increase the number of control of AP

Posted on 7/24/2015
Verified Buyer
Works Flawlessly!

It was a brand new device in the factory sealed box and it's been running without a hiccup since setup.

Posted on 7/14/2015
Verified Buyer
Support 5 APs

This controller can support 5 Aps

Posted on 2/26/2015
Verified Buyer
Great for branch offices or those trying to learn the technology

Using it in my home to explore the functionality and work towards wireless certifications as well as related (routing/switching, security)

Posted on 2/6/2015
Verified Buyer
CCIE support

The engineer give us full technical support, buy the license L-LIC-CT2504-5A together and support 10 Aps

Posted on 10/27/2014
Verified Buyer
Good website

It is convenient to place order online

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