The Cisco® 4400 Series Wireless LAN Controller provides systemwide wireless LAN
functions for medium to large-sized facilities. By automating WLAN configuration and
management functions, network managers have the control, security, redundancy, and
reliability needed to cost-effectively scale and manage their wireless networks as easily as
they scale and manage their traditional wired networks.
The Cisco 4400 Series Wireless LAN Controller works in conjunction with
Cisco Aironet® access points, the Cisco Wireless Control System (WCS), and the Cisco
Wireless Location Appliance to support business-critical wireless data, voice, and video
applications. It provides real-time communication between access points and other
wireless LAN controllers to deliver centralized security policies, wireless intrusion
prevention system (IPS) capabilities, award-winning RF management, quality of service
(QoS), and mobility.
Because the Cisco 4400 Series Wireless LAN Controller supports 802.11a/b/g and the IEEE
802.11n draft 2.0 standard, organizations can deploy the solution that best meets their individual
requirements. Organizations can offer robust coverage with 802.11 a/b/g or deliver greater
performance with 5x the throughput and unprecedented reliability using 802.11n and Cisco's Next-
Generation Wireless Solutions and Cisco Enterprise Wireless Mesh.
The Cisco 4400 Series Wireless LAN Controller is available in two models. The Cisco 4402
Wireless LAN Controller with two 1 GB Ethernet ports comes in configurations that support 12, 25,
and 50 access points. The Cisco 4404 Wireless LAN Controller with four 1 GB Ethernet ports
supports 100 access points. The Cisco 4402 controller provides one expansion slot. The Cisco
4404 controller provides two expansion slots that can be used to add VPN termination today, as
well as enhanced functionality in the future. In addition, each Cisco 4400 WLAN Controller
supports an optional redundant power supply to ensure maximum availability.
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