Problems Associating To An Access Point; Problems Associating To An Access Point; Problems Authenticating To An Access Point; Problems Authenticating To An Access Point - Cisco CB21AG Installation And Configuration Manual

Chapter 10 Troubleshooting

Problems Associating to an Access Point

Follow the instructions below if your client adapter fails to associate to an access point.
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Problems Authenticating to an Access Point

If your client adapter is a 40-bit card and LEAP or EAP is enabled, the adapter can associate but not
authenticate to access points using 128-bit encryption. To authenticate to an access point using 128-bit
encryption, you have two options:
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Problems Connecting to the Network

After you have installed the appropriate driver and client utilities, contact your IS department if you have
a problem connecting to the network. Proxy server, network protocols, and further authentication
information might be needed to connect to the network.

Prioritizing Network Connections

If your computer has more than one network adapter enabled (such as a Cisco Aironet client adapter and
an Ethernet card), you can choose which one to use by assigning a priority to your network connections.
Follow the steps below to prioritize your network connections.

Step 1

Right-click the My Network Places icon on your desktop.
Step 2 Click Properties.
Step 3 Choose the Advanced menu option at the top of the window.
Cisco Aironet 802.11a/b/g Wireless LAN Client Adapters (CB21AG and PI21AG) Installation and Configuration Guide
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If possible, move your workstation a few feet closer to an access point and try again.
Make sure that the client adapter is securely inserted in your computer's client adapter slot.
If you are using a PCI card, make sure that the antenna is securely attached.
Make sure that the access point is turned on and operating.
Check that all parameters are set properly for both the client adapter and the access point. These
include the SSID, EAP authentication, WEP activation, network type, channel, etc.
Follow the instructions in the previous section to resolve any resource conflicts.
If the client adapter still fails to establish contact, refer to the
section in the Preface for technical support information.
Purchase a 128-bit client adapter. This is the most secure option.
Disable static WEP for the client adapter and configure the adapter and the access point to associate
to mixed cells. This option presents a security risk because your data is not encrypted as it is sent
over the RF network.
Troubleshooting the Client Adapter
"Obtaining Technical Assistance"
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