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User’s Guide
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CHAPTER 24
Troubleshooting
24.1 Overview
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
• NBG4115 Access and Login
• Internet Access
• Resetting the NBG4115 to Its Factory Defaults
• Wireless Router/AP Troubleshooting
24.2 Power, Hardware Connections, and LEDs
The NBG4115 does not turn on. None of the LEDs turn on.
1 Make sure you are using the power adaptor or cord included with the NBG4115.
2 Make sure the power adaptor or cord is connected to the NBG4115 and plugged in
to an appropriate power source. Make sure the power source is turned on.
3 Disconnect and re-connect the power adaptor or cord to the NBG4115.
4 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 1.5 on
page 22.
- Wireless N-lite 3G Router 1
- About This User's Guide 3
- Documentation Feedback 4
- Need More Help? 4
- Customer Support 5
- Document Conventions 6
- Icons Used in Figures 7
- Safety Warnings 8
- Contents Overview 10
- User’s Guide 10
- Table of Contents 11
- Chapter 5 12
- Chapter 6 12
- Introduction 19
- CHAPTER 1 21
- 1.5 LEDs 22
- Chapter 1 Introduction 23
- LED COLOR STATUS DESCRIPTION 23
- Chapter 1 Introduction 24
- CHAPTER 2 25
- Chapter 2 The WPS Button 26
- CHAPTER 3 27
- 3.3 Resetting the NBG4115 29
- 3.5.1 Navigation Panel 32
- Table 4 Screens Summary 33
- Table 5 Summary: DHCP Table 35
- CHAPTER 4 39
- 4.3.1 System Name 40
- 4.3.2 Domain Name 41
- 4.4 STEP 2: Wireless LAN 42
- 4.5.1 Ethernet Connection 44
- 4.5.2 PPPoE Connection 45
- 4.5.3 PPTP Connection 46
- Chapter 4 Connection Wizard 47
- 4.5.4 Mobile 3G 48
- 4.5.5 Your IP Address 49
- 4.5.10 WAN MAC Address 52
- Chapter 4 Connection Wizard 54
- CHAPTER 5 55
- Figure 26 Status: AP Mode 56
- Chapter 5 AP Mode 57
- 5.3.1 Navigation Panel 58
- 5.4 LAN Settings 59
- Chapter 5 AP Mode 62
- CHAPTER 6 63
- [email protected] 64
- Wireless Client 69
- ZyXEL Device 69
- 6.4.2 PIN Configuration 70
- SSID SSID_Example3 71
- Channel 6 71
- Security WPA-PSK 71
- Figure 35 Confirm Save 73
- 6.6 Bandwidth Management 74
- TCP 7070 76
- RTSP TCP or UDP 554 76
- VDO LIVE TCP 7000 76
- FTP TCP 20 ~ 21 76
- Chapter 6 Tutorials 78
- CHAPTER 7 81
- 7.1.2 What You Should Know 82
- MAC Address Filter 83
- User Authentication 83
- Encryption 84
- 7.2 General 85
- Chapter 7 Wireless LAN 86
- 7.2.1 No Security 87
- 7.2.2 WEP Encryption 87
- 7.2.3 WPA-PSK/WPA2-PSK 89
- 7.3 MAC Filter 90
- 7.4 Advanced 92
- Chapter 7 Wireless LAN 93
- 7.5 QoS 94
- 7.6 WPS 97
- 7.7 WPS Station 98
- 7.8 Scheduling 99
- Table 35 Scheduling 100
- CHAPTER 8 101
- 8.2.1 What You Need To Know 102
- WAN MAC Address 103
- Multicast 103
- NetBIOS over TCP/IP 103
- Auto-Bridge 104
- 8.3 Internet Connection 105
- 8.3.2 PPPoE 106
- 8.3.3 PPTP 108
- Chapter 8 WAN 109
- LABEL DESCRIPTION 109
- Chapter 8 WAN 110
- 8.3.4 Mobile 3G 111
- 8.4 Advanced 113
- Table 40 WAN > Advanced 114
- CHAPTER 9 115
- LAN and WAN IP Addresses 116
- IP Pool Setup 116
- LAN TCP/IP 116
- Chapter 9 LAN 117
- Chapter 9 LAN 118
- CHAPTER 10 119
- 10.2 General 120
- 10.3 Advanced 121
- 10.4 Client List 122
- Chapter 10 DHCP Server 123
- Chapter 10 DHCP Server 124
- CHAPTER 11 125
- 11.1.2 What You Need To Know 126
- What NAT Does 127
- How NAT Works 127
- 11.2 General 128
- 11.3 Application 129
- Chapter 11 NAT 130
- 11.4 Advanced 131
- 11.5 Technical Reference 132
- CHAPTER 12 135
- 12.2 General 136
- Table 49 Dynamic DNS 137
- Chapter 12 DDNS 138
- PART III 139
- CHAPTER 13 141
- 13.1.2 What You Need To Know 142
- 13.2 General 144
- 13.3 Services 144
- Chapter 13 Firewall 145
- Chapter 13 Firewall 146
- CHAPTER 14 147
- 14.2 Filter 148
- 14.3 Technical Reference 149
- Full Path URL Checking 150
- File Name URL Checking 150
- Management 151
- CHAPTER 15 153
- 15.2 IP Static Route 154
- Chapter 15 Static Route 156
- CHAPTER 16 157
- 16.2 General 158
- 16.3 Advanced 159
- 16.3.2 Priority Levels 162
- SERVICE DESCRIPTION 164
- CHAPTER 17 165
- 17.2 WWW 166
- Chapter 17 Remote Management 167
- Chapter 17 Remote Management 168
- CHAPTER 18 169
- 18.2 General 170
- 18.3 Technical Reference 171
- Figure 93 System Tray Icon 174
- Web Configurator Easy Access 175
- Chapter 18 UPnP 177
- Chapter 18 UPnP 178
- Maintenance and 179
- Troubleshooting 179
- CHAPTER 19 181
- Chapter 19 System 182
- 19.3 Time Setting 183
- Chapter 19 System 185
- CHAPTER 20 187
- Chapter 20 Logs 188
- CHAPTER 21 189
- 21.2 Firmware 190
- Figure 102 Upload Warning 191
- 21.3 Configuration 192
- 21.3.2 Restore Configuration 193
- 21.4 Restart 194
- CHAPTER 22 195
- 22.2 General 196
- Internet 197
- Chapter 22 Sys OP Mode 198
- CHAPTER 23 199
- Chapter 23 Language 200
- CHAPTER 24 201
- I forgot the password 203
- 24.4 Internet Access 204
- Defaults 206
- Chapter 24 Troubleshooting 208
- Appendices and 209
- APPENDIX A 211
- FEATURE DESCRIPTION 212
- Table 69 Firmware Features 213
- APPENDIX B 215
- JavaScripts 218
- Java Permissions 220
- JAVA (Sun) 221
- Figure 123 Java (Sun) 222
- APPENDIX C 223
- Subnet Masks 224
- Network Size 225
- Notation 226
- Subnetting 227
- Example: Four Subnets 228
- Table 74 Subnet 1 229
- Table 75 Subnet 2 229
- Table 76 Subnet 3 229
- Table 77 Subnet 4 229
- Example: Eight Subnets 230
- Subnet Planning 230
- Configuring IP Addresses 231
- Private IP Addresses 232
- APPENDIX D 233
- Windows 95/98/Me 234
- Configuring 235
- Verifying Settings 236
- Windows 2000/NT/XP 237
- Macintosh OS 8/9 243
- Macintosh OS X 245
- Using Configuration Files 248
- 24.6.1 Verifying Settings 250
- APPENDIX E 251
- Figure 153 RTS/CTS 254
- Fragmentation Threshold 255
- Preamble Type 255
- IEEE 802.1x 256
- Types of Authentication 257
- PEAP (Protected EAP) 258
- Dynamic WEP Key Exchange 258
- Encryption 259
- Security Parameters Summary 262
- APPENDIX F 263
- Appendix F Services 264
- Appendix F Services 265
- APPENDIX G 267
- Industry Canada Statement 268
- IMPORTANT NOTE: 269
- Notices 269
- Viewing Certifications 269
- ZyXEL Limited Warranty 270
- End-User License Agreement 270
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