Configuring Wireless Sniffing; Prerequisites For Wireless Sniffing; Using The Gui To Configure Sniffing On An Access Point - Cisco 2100 Series Configuration Manual

Appendix D Troubleshooting

Configuring Wireless Sniffing

The controller enables you to configure an access point as a network "sniffer," which captures and
forwards all the packets on a particular channel to a remote machine that runs packet analyzer software.
These packets contain information on timestamp, signal strength, packet size, and so on. Sniffers allow
you to monitor and record network activity and to detect problems.
Supported third-party network analyzer software applications include:
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Prerequisites for Wireless Sniffing

To perform wireless sniffing, you need the following hardware and software:
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Using the GUI to Configure Sniffing on an Access Point

Using the controller GUI, follow these steps to configure sniffing on an access point.
Step 1 Click Wireless > Access Points > All APs to open the All APs page.
Step 2 Click the name of the access point that you want to configure as the sniffer. The All APs > Details for
page appears (see
OL-17037-01
Wildpackets Omnipeek or Airopeek (http://www.wildpackets.com)
AirMagnet Enterprise Analyzer (http://www.airmagnet.com)
Wireshark (http://www.wireshark.org)
A dedicated access point—An access point configured as a sniffer cannot simultaneously provide
wireless access service on the network. To avoid disrupting coverage, use an access point that is not
part of your existing wireless network.
A remote monitoring device—A computer capable of running the analyzer software.
Windows XP or Linux operating system—The controller supports sniffing on both Windows XP
and Linux machines.
Software and supporting files, plug-ins, or adapters—Your analyzer software may require
specialized files before you can successfully enable sniffing:
Omnipeek or Airopeek—Go to
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purchase, install, and configure the software.
AirMagnet—Go to http://www.airmagnet.com/products/ea_cisco/#top
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instructions to purchase, install, and configure the software.
Wireshark—Go to http://tools.cisco.com/support/downloads
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download Wireshark and the correct installation wizard for your operating system.
Figure D-10).
http://www.wildpackets.com
Cisco Wireless LAN Controller Configuration Guide
Configuring Wireless Sniffing
and follow the instructions to
and follow the
and follow the instructions to
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