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ZyXEL Communications ZyAIR G-220 Troubleshooting, 6.1Problems Starting the ZyAIR Utility Program, 6.2Problem with the Link Status, Table 6-2Troubleshooting Link Quality

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ZyAIR G-220 User’s Guide

Chapter 6

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.

6.1Problems Starting the ZyAIR Utility Program

Table 6-1 Troubleshooting Starting ZyAIR Utility Program

Cannot start the ZyAIR	Make sure the ZyAIR is properly inserted and the LED(s) 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.

The ZyAIR Utility icon	When the ZyAIR Wireless LAN Utility icon does not display, you are using the
does not display	Windows XP wireless configuration tool at the same time. Refer to the Section

1.3to disable the Windows XP wireless configuration tool.

6.2Problem with the Link Status

Table 6-2 Troubleshooting Link Quality

PROBLEM	CORRECTIVE ACTION

The link quality and/or signal	Search and connect to another AP with a better link quality using the Site
strength is poor all the time.	Survey screen.
	Move your computer closer to the AP or the peer computer(s) within the
	transmission range.
	There may be too much radio interference (for example microwave or
	another AP using the same channel) around your wireless network.
	Relocate or reduce the radio interference.

Troubleshooting

6-1

Contents

Page Copyright ZyXEL Limited Warranty Information for Canadian Users Federal Communications Commission (FCC) Interference Statement1 Page Customer Support Page Table of Contents Appendix A Setting up Your Computer’s IP Address Appendix B Access Point Mode Setup Example List of Figures List of Tables Table Table 3-4Station Mode: Advanced Setting… Table 5-1Information… Troubleshooting Starting ZyAIR Utility Program Preface Graphics Icons Key Getting Started This chapter introduces the ZyAIR and prepares you to use the ZyAIR Utility 1.1About Your ZyAIR 1.2ZyAIR Hardware and Utility Installation 1.3Disable Windows XP Wireless LAN Configuration Tool Step Figure 1-1Windows XP: System Tray Icon Network Connections Figure 1-2Windows XP: Wireless Network Connection Status Properties Page 1.4Accessing the ZyAIR Utility 1.5ZyAIR Modes 1.5.1 Change ZyAIR Modes Page Wireless LAN Network This chapter provides background information on wireless LAN network 2.1Overview 2.1.1SSID 2.1.2 Channel Ad-Hoc(IBSS) Figure 2-1IBSS Example Figure 2-2BSS Example 2.1.5 Roaming 2.2Wireless LAN Security 2.2.1 Data Encryption with WEP 2.3Fragmentation Threshold 2.4RTS/CTS Threshold 2.5Authentication Type 2.6Preamble Type Wireless Station Mode Configuration This chapter shows you how to configure your ZyAIR in wireless station mode 3.1Introduction 3.2The ZyAIR Utility Screen Table 3-1Station Mode: ZyAIR G-220Utility 3.2.1 Connecting to a Network 3.3The More Setting… Screen Figure 3-3Station Mode: More Setting… Table 3-2Station Mode: More Setting… Page 3.4The WEP Key Setting… Screen You must configure all four WEP keys the first time you use the ZyAIR The values for the WEP keys must be set up exactly the same on all wireless devices in the same wireless LAN ASCII WEP keys are case sensitive 3.5The Advanced Setting… Screen Page Page Access Point Mode Configuration This chapter shows you how to configure your ZyAIR in access point mode 4.1Introduction 4.1.1 Additional Setup Requirements 4.2The ZyAIR Utility Screen Figure 4-1Access Point Mode: ZyAIR G-220Utility Table 4-1Access Point Mode: ZyAIR G-220Utility 4.3The Access Point Setting Screen Figure 4-2Access Point Mode: Access Point Setting Table 4-2Access Point Mode: Access Point Setting Page 4.4The WEP Key Setting… Screen 4.5The MAC Address Filter Screen Figure 4-4Access Point Mode: MAC Filter Table 4-3Access Point Mode: MAC Filter Page Maintenance This chapter describes how to uninstall or upgrade the ZyAIR Utility 5.1The Information… Screen 5.2Unistallating the ZyAIR Utility 5.3Upgrading the ZyAIR Utility Troubleshooting 6.1Problems Starting the ZyAIR Utility Program 6.2Problem with the Link Status 6.3Problems Communicating With Other Computers Appendix A Setting up Your Computer’s IP Address If you need TCP/IP: If you need Client for Microsoft Networks: Page Verifying Your Computer’s IP Address Windows 2000/NT/XP Page Page Page Macintosh OS 8/9 Page Check your TCP/IP properties in the TCP/IP Control Panel window Macintosh OS Check your TCP/IP properties in the Network window Page Appendix B Access Point Mode Setup Example Diagram 2 Windows 2000: Network and Dial-upConnections Sharing Enable Internet Connection Sharing for this connection Diagram 3 Windows 2000: Network Properties Diagram 4 Windows 2000: Local Network Configuring the Wireless Station Computer Page Appendix C Index MAC filter type Network Type Ad-Hoc(IBSS) Online Registration Open authentication mode