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Cisco Wireless LAN Solution Product Guide
OL-7955-01
Chapter 1 Overview
Cisco Wireless LAN Controllers
The Cisco 4100 Series Wireless LAN Controller can be factory-ordered with a VPN/Enhanced Security
Module (Crypto Card) to support VPN, IPSec and other processor-intensive tasks, and contains two
(Cisco 4100 Series Wireless LAN Controller) 1000BASE-SX network connectors that allow the Cisco
4100 Series Wireless LAN Controller to communicate with the network at Gigabit Ethernet speeds. The
1000BASE-SX network connectors provides 100/1000 Mbps wired connections to a network through
850nM (SX) fiber-optic links using LC physical connectors.
The two redundant Gigabit Ethernet connections on the Cisco 4100 Series Wireless LAN Controller
allow the Cisco 4100 Series Wireless LAN Controller to bypass single network failures. At any given
time one of the Cisco 4100 Series Wireless LAN Controller Gigabit Ethernet connections is active and
the other is passive. Upon a network failure, the active connection becomes passive, and the passive
connection becomes active.
Cisco 4400 Series Wireless LAN Controllers
Cisco 4400 Series Wireless LAN Controllers are part of the Cisco Wireless LAN Solution. Each Cisco
4400 Series Wireless LAN Controller controls up to 100 Cisco 1000 series lightweight access points,
making it ideal for large-sized enterprises and large-density applications.
The 4402 Cisco 4400 Series Wireless LAN Controller has one set of two redundant front-panel SX/LC/T
SFP modules (SFP transceiver, or Small Form-factor Plug-in), and the 4404 Cisco 4400 Series Wireless
LAN Controller has two sets of two redundant front-panel SX/LC/T SFP modules:
• 1000BASE-SX SFP modules provide a 1000 Mbps wired connection to a network through an
850nM (SX) fiber-optic link using an LC physical connector.
• 1000BASE-LX SFP modules provide a 1000 Mbps wired connection to a network through a
1300nM (LX/LH) fiber-optic link using an LC physical connector.
• 1000BASE-T SFP modules provide a 1000 Mbps wired connection to a network through a copper
link using an RJ-45 physical connector.
The one or two sets of redundant Gigabit Ethernet connections on the Cisco 4400 Series Wireless LAN
Controller allow the Cisco 4400 Series Wireless LAN Controller to bypass single network failures. At
any given time one of the Cisco 4400 Series Wireless LAN Controller Gigabit Ethernet connections is
active and the other is 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.
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