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ZyXEL Communications ZyAIR G-110 Troubleshooting, 4.1Problems Starting the ZyAIR Utility Program, 4.2Problems Communicating With Other Computers

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ZyAIR G-110 User’s Guide

Chapter 4

Troubleshooting

This chapter covers potential problems and the possible remedies. After each problem description, some instructions are provided to help you to diagnose and to solve the problem.

4.1Problems Starting the ZyAIR Utility Program

Table 4-1 Troubleshooting Starting ZyAIR Utility Program

Cannot start the ZyAIR	Make sure the ZyAIR is properly inserted and the LED is on. Refer to the
Wireless LAN Utility	Quick Installation Guide for the LED descriptions.

	Use the Device Manager to check for possible hardware conflicts.
	Click Start, Settings, Control Panel, System, Hardware and Device
	Manager. Verify the status of the ZyAIR under Network Adapter. (Steps may
	vary depending on the version of Windows).

	Install the ZyAIR in another computer.

	If the error persists, you may have a hardware problem. In this case, you
	should contact your local vendor.

4.2Problems Communicating With Other Computers

Table 4-2 Troubleshooting Communication Problems

PROBLEM	CORRECTIVE ACTION
The ZyAIR computer cannot	Make sure you are connected to the network.
communicate with the other
computer.

A.Infrastructure Make sure that the AP and the associated computers are turned on and working properly.

Make sure the ZyAIR and the associated AP use the same SSID. Configure the AP to use another radio channel if interference is high.

Make sure that the computer and the AP shares the same WEP key and authentication mode. Verify the settings in the Security Configuration screens.

Troubleshooting

4-1

Contents

Page Copyright ZyXEL Limited Warranty Information for Canadian Users Federal Communications Commission (FCC) Interference Statement Page Customer Support Page Table of Contents Index List of Figures List of Tables Preface Graphics Icons Key Getting Started 1.1About Your ZyAIR 1.2ZyAIR Hardware and Utility Installation 1.3Disable Windows XP Wireless LAN Configuration Tool Figure 1-1Windows XP: System Tray Icon From the Wireless Network Connection Status Screen Step Figure 1-2Windows XP: System Tray Icon Start Page 1.4Accessing the ZyAIR Utility Table 1-1ZyAIR Utility: System Tray Icon Page Using the ZyAIR Utility 2.1About Wireless LAN Network 2.1.1 Channel 2.1.2SSID 2.1.3 Transfer Rate 2.2.1 Ad-Hoc(IBSS) 2.2.2Infrastructure 2.3Roaming 2.4Viewing Current Configuration Figure 2-5ZyAIR Utility: Link Info Table 2-1ZyAIR Utility: Link Info 2.4.1 Common Screen Command Buttons 2.5Configuring the ZyAIR Wireless Parameters Figure 2-6ZyAIR Utility: Profile: Configuration Table 2-3ZyAIR Utility: Profile: Configuration Apply Changes Figure 2-7Odyssey Client Add this trusted server to the database 2.6Network Configuration Profile Setting 2.6.1 Saving the Current Setting to a Profile 2.6.2 Using a Pre-configuredProfile 2.6.3 Deleting a Profile 2.7The Site Survey Screen 2.7.1 Connecting to a Network 2.8About Wireless LAN Security 2.8.1 Data Encryption with WEP 2.8.2 Authentication Mode 2.8.3 IEEE 2.8.4 WPA 2.8.5 WPA-PSKApplication Example 2.8.6 WPA with RADIUS Application Example 2.9Configuring Wireless Security on the ZyAIR 2.9.1 WEP Encryption Figure 2-14ZyAIR Utility: Security Configuration: WEP Table 2-5ZyAIR Utility: Security Configuration: WEP 2.9.2 WPA-PSK 2.9.3 WPA Figure 2-16ZyAIR Utility: Security Configuration: WPA Table 2-7ZyAIR Utility: Security Configuration: WPA 2.9.4 IEEE802.1x Figure 2-17ZyAIR Utility: Security Configuration: Table 2-8ZyAIR Utility: Security Configuration: 2.10 The About Screen Figure 2-18ZyAIR Utility: About Table 2-9ZyAIR Utility: About Page Maintenance 3.1Uninstalling the ZyAIR Utility 3.2Upgrading the ZyAIR Utility Page Troubleshooting 4.1Problems Starting the ZyAIR Utility Program 4.2Problems Communicating With Other Computers 4.3Problem with the Link Status Appendix A Types of EAP Authentication LEAP Comparison of EAP Authentication Types Appendix B Product Specifications Page Page Page Index