Cisco 4400 Series Wireless LAN Controllers
Formally Airespace

Cisco® wireless LAN controllers are ideal for enterprise wireless LAN deployments and provide system-wide wireless LAN functions, such as security policies, intrusion prevention, RF management, quality of service (QoS), and mobility. They work in conjunction with Cisco 1000 Series lightweight access points and Cisco Wireless Control System (WCS) Software to support business-critical wireless applications. From voice and data services to location tracking, WLAN controllers provide the control, scalability, and reliability that IT managers need to build secure, enterprise-scale wireless networks—from branch offices to main campuses.

Cisco wireless LAN controllers smoothly integrate into existing enterprise networks. They communicate with Cisco 1000 Series lightweight access points over any Layer 2 (Ethernet) or Layer 3 (IP) infrastructure using the Lightweight Access Point Protocol (LWAPP) (Figure 2). This emerging IETF standard helps ensure that communication between access points and wireless LAN controllers remains secure, and it enables important wireless LAN configuration and management functions to be completely automated for cost-effective wireless LAN operations.

The Cisco 4400 Series Wireless LAN Controller is designed for medium to large size facilities and is available in two models—the 4402 with two Gigabit Ethernet ports comes in configurations that support 12, 25, and 50 access points, and the 4404 with four Gigabit Ethernet ports supports 100 access points. The 4402 provides one expansion slot and the 4404 provides two expansion slots that can be used to add enhanced functionality in the future, such as VPN termination and other capabilities. In addition, each 4400 WLAN Controller supports an optional redundant power supply to ensure maximum availability.

Cisco 1000 Series Lightweight Access Points

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