Cisco Systems
Copyright © 2000 Cisco Systems, Inc. All Rights Reserved.
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Figure1 Client devices equippedwith wireless clientadapters canroam freely throughouta facilityvia communicationswith multipleAPs.
Laptop with
PC Card Adapter
Laptop
Desktop with
PCI Card Adapter
Access Point
Access Point
Switch
with inline power
(e.g. Cisco Catalyst
3524 PWR-XL)
Switch
Wired Network
Backbone
Tablet with
PC Card Adapter
Ethernet Speed and Improved Range
With a full 100 milliwatts (mW) of transmit power and
the best receive sensitivity in the industry, the Cisco
Aironet 350 Series Client Adapters provide the longest
range and best reliability available for wireless clients.
Advanced signal processing in the Cisco Aironet 350
Series helps manage the multipath propagation often
found in office environments. Intelligent filtering
addresses ambient noise and interference that can
decrease network performance. Building upon Cisco
leadership in wireless LAN (WLAN) performance, the
Cisco Aironet 350 Series Client Adapters provide the
greatest throughput available so users can enjoy virtually
the same connectivity they gain from wire-line
connections. Based on direct sequence spread spectrum
(DSSS) technology and operating in the 2.4-GHz band,
the Cisco Aironet350 Series ClientAdapters complywith
the IEEE 802.11b standard—ensuring interoperability
with all other compliant WLAN products.
Industry-Leading Centralized Security
Solution for the Enterprise
For installations that need to scale to hundreds or even
thousands of users, all Cisco Aironet products feature an
industry-leadingcentralized security architecturebased on
the IEEE 802.1x standard (see Figure 2). Central to this
architecture is the Extensible Authentication Protocol
(EAP), a proposed open standard that enables wireless
client adapter manufacturers and Remote Access Dial-In
User Service (RADIUS) server vendors to independently
develop interoperable client- and server-side security
software. This new security architecture provides
centralized user-based authentication integrated with
network logon via utilization of an EAP-enabled RADIUS
serversuchastheCiscoSecureAccess ControlServer2000
Version 2.6. When the user supplies a username and
password, the client interacts with the RADIUS server
through a Cisco Aironet AP. When the RADIUS server
authenticates the client, the server and client negotiate a
single-session,single-user encryption keyand the RADIUS
server transmits the key to the AP. With this centralized
and standards-based architecture, wireless security scales
to meet the requirements of any organization. Cisco
Aironet 350 Series Client Adapters support the standard
wiredequivalentprivacy(WEP) security architecture,with
both 40- and 128-bit encryption keys.
(57 pages)
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