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NWD2105 User’s Guide
91
CHAPTER 7
Troubleshooting
This chapter offers some suggestions to solve problems you might encounter. The
potential problems are divided into the following categories.
• Power, Hardware Connections, and LEDs
• Accessing the ZyXEL Utility
• Link Quality
• Problems Communicating with Other Computers
7.1 Power, Hardware Connections, and LEDs
The NWD2105 does not turn on. None of the LEDs turn on.
1 Make sure the NWD2105 is correctly installed (refer to your Quick Start Guide).
2 Restart the computer to which the NWD2105 is attached.
3 If the problem continues, contact the vendor.
One of the LEDs does not behave as expected.
1 Make sure you understand the normal behavior of the LED. See Section 1.2 on
page 18.
2 Check the hardware connection. See the Quick Start Guide and Section 1.2 on
page 18.
3 Restart the computer to which the NWD2105 is attached.
4 If the problem continues, contact the vendor.
- Wireless N-lite USB Adapter 1
- About This User's Guide 3
- Need More Help? 4
- Customer Support 4
- Document Conventions 5
- Icons Used in Figures 6
- Safety Warnings 7
- Contents Overview 10
- NWD2105 User’s Guide 10
- Table of Contents 11
- Introduction and 15
- Configuration 15
- CHAPTER 1 17
- 1.2 About Your NWD2105 18
- 1.3 Application Overview 19
- 1.3.2 Ad-Hoc 20
- 1.4.1 ZyXEL Utility Icon 20
- 1.5 Configuration Methods 21
- Chapter 1 Getting Started 22
- CHAPTER 2 23
- Setup (WPS) 24
- 2.2.2 PIN Configuration 25
- Chapter 2 Tutorial 27
- Chapter 2 Tutorial 36
- CHAPTER 3 37
- 3.2 Wireless LAN Overview 38
- 3.3 Wireless LAN Security 39
- 3.3.1.2 IEEE 802.1x 40
- 3.4 WiFi Protected Setup 41
- 3.4.2 PIN Configuration 42
- 3.4.3 How WPS Works 44
- Figure 24 How WPS works 45
- REGISTRARENROLLEE 46
- SECURITY INFO 46
- REGISTRAR 46
- ENROLLEE 46
- EXISTING CONNECTION 46
- 3.4.4 Limitations of WPS 47
- CHAPTER 4 49
- 4.1.3 Before You Begin 50
- 4.3 The Link Info Screen 51
- Chapter 4 Station Mode 52
- 4.3.1 Trend Chart 53
- 4.4 The Site Survey Screen 54
- 4.4.1 Security Settings 55
- 4.4.1.2 WEP Encryption 56
- 4.4.1.3 WPA-PSK/WPA2-PSK 57
- 4.4.1.4 WPA/WPA2 58
- 4.4.1.5 IEEE 802.1x 59
- 4.4.2 Summary Screen 61
- 4.5 The Profile Screen 62
- Figure 38 Profile 63
- Table 14 Profile 63
- 4.5.1 Adding a New Profile 64
- Wireless 66
- Settings 66
- 4.6 The Adapter Screen 68
- 4.7.1 Using PEAP in Vista 72
- 4.7.2 Using TLS in Vista 73
- CHAPTER 5 75
- 5.1.2 What You Need to Know 76
- 5.2 AP Mode Screen Summary 77
- 5.3 The Link Info Screen 78
- Table 22 Configuration 79
- 5.4.1 Security Settings 80
- 5.4.1.2 WEP Encryption 81
- 5.4.1.3 WPA-PSK/WPA2-PSK 82
- 5.5 The MAC Filter Screen 83
- Table 25 MAC Filter 84
- CHAPTER 6 85
- 6.2 The About Screen 86
- Chapter 6 Maintenance 88
- Troubleshooting 89
- CHAPTER 7 91
- 7.3 Link Quality 92
- Computers 93
- Chapter 7 Troubleshooting 94
- CHAPTER 8 95
- WIRELESS STANDARDS 96
- SOFTWARE SPECIFICATIONS 97
- WIRELESS FEATURES 97
- PART III 99
- APPENDIX A 101
- Properties 103
- Verifying Settings 104
- Windows Vista 105
- Windows 7 109
- Mac OS X: 10.3 and 10.4 113
- Mac OS X: 10.5 and 10.6 117
- Linux: Ubuntu 8 (GNOME) 120
- Linux: openSUSE 10.3 (KDE) 125
- APPENDIX B 131
- Figure 112 RTS/CTS 134
- Fragmentation Threshold 135
- Preamble Type 135
- IEEE 802.11g Wireless LAN 135
- Wireless Security Overview 136
- IEEE 802.1x 137
- Types of EAP Authentication 138
- PEAP (Protected EAP) 139
- Dynamic WEP Key Exchange 140
- WPA and WPA2 140
- Encryption 141
- User Authentication 142
- Security Parameters Summary 144
- Antenna Overview 145
- Antenna Characteristics 145
- Types of Antennas for WLAN 145
- Positioning Antennas 146
- APPENDIX C 147
- Connect 149
- LABEL DESCRIPTION 153
- Setting Up An Ad-Hoc Network 154
- Windows XP 156
- Security Settings 163
- APPENDIX D 173
- Verifying the Settings 177
- APPENDIX E 179
- Industry Canada Statement 181
- Notices 181
- ZyXEL Limited Warranty 182
- Registration 183
- Appendix E Legal Information 184
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