passive. Upon a network failure, the active connection becomes passive, and the passive connection becomes active.

The Cisco 4400 Series Wireless LAN Controller can be equipped with one or two Cisco 4400 series power supplies. When the Cisco Wireless LAN Controller is equipped with two Cisco 4400 series power supplies, the power supplies are redundant and either power supply can continue to power the Cisco 4400 Series Wireless LAN Controller if the other power supply fails.

One Cisco 4400 series power supply is included standard with the Cisco Wireless LAN Controller, and is installed in Slot 1 at the factory. For redundancy, a second Cisco 4400 series power supply can be ordered from the factory and may be installed in Slot 2. The same power supply also fits in Slot 1 and can be used to replace a failed power supply in the field.

Cisco 2000 Series Wireless LAN Controller Model Numbers

Cisco 2000 Series Wireless LAN Controller model number is as follows:

AIR-WLC2006-K9 - The Cisco 2000 Series Wireless LAN Controller communicates with up to six Cisco 1000 Series lightweight access points.

Note that the Cisco 2000 Series Wireless LAN Controllers come from the factory with tabletop mounting feet.

Cisco 4100 Series Wireless LAN Controller Model Numbers

Cisco 4100 Series Wireless LAN Controller model numbers are as follows:

AIR-WLC4112-K9 - The Cisco 4100 Series Wireless LAN Controller uses two redundant GigE connections to bypass single network failures, and communicates with up to 12 Cisco 1000 Series lightweight access points. That is, at any given time one of the Cisco 4100 Series Wireless LAN Controller GigE connections is active and the other is passive. Upon a network failure, the active connection becomes passive, and the passive connection becomes active. Note that the 1000BASE-SX Network Adapters provide 100/1000 Mbps wired connections to a network through 850nM (SX) fiber-optic links using LC physical connectors.

AIR-WLC4124-K9 - The Cisco 4100 Series Wireless LAN Controller uses two redundant GigE connections to bypass single network failures, and communicates with up to 24 Cisco 1000 Series lightweight access points.

AIR-WLC4136-K9 - The Cisco 4100 Series Wireless LAN Controller uses two redundant GigE connections to bypass single network failures, and communicates with up to 36 Cisco 1000 Series lightweight access points.

Note that all Cisco 4100 Series Wireless LAN Controller models come from the factory with 19-inch EIA equipment rack flush-mount ears.

The following upgrade module is also available:

AIR-VPN-4100 - VPN/Enhanced Security Module: Supports VPN, L2TP, IPSec and other processor-intensive security options. This is a field-installable option for all Cisco 4100 Series Wireless LAN Controllers.

Cisco 4400 Series Wireless LAN Controller Model Numbers

Cisco 4400 Series Wireless LAN Controller model numbers are as follows:

AIR-WLC4402-12-K9 - The 4402 Cisco 4400 Series Wireless LAN Controller uses two redundant GigE connections to bypass single network failures, and communicates with up to 12 Cisco 1000 Series lightweight access points. That is, at any given time one of the Cisco 4400 Series

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Cisco 2000 Series Wireless LAN Controller Model Numbers

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Cisco Systems OL-7426-03 quick start Cisco 2000 Series Wireless LAN Controller Model Numbers