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P-870HW-51a v2 User’s Guide
181
CHAPTER 18
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
• ZyXEL Device Access and Login
• Internet Access
18.1 Power, Hardware Connections, and LEDs
The ZyXEL Device does not turn on. None of the LEDs turn on.
1 Make sure the ZyXEL Device is turned on.
2 Make sure you are using the power adaptor or cord included with the ZyXEL
Device.
3 Make sure the power adaptor or cord is connected to the ZyXEL Device and
plugged in to an appropriate power source. Make sure the power source is turned
on.
4 Turn the ZyXEL Device off and on.
5 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 21.
- P-870HW-51a v2 1
- About This User's Guide 3
- Customer Support 4
- Document Conventions 5
- Icons Used in Figures 6
- Safety Warnings 7
- New Template User’s Guide 10
- Table of Contents 11
- Chapter 8 13
- Chapter 9 13
- Introduction 17
- CHAPTER 1 19
- 1.4.1 Internet Access 20
- 1.5 LEDs (Lights) 21
- 1.6 The RESET Button 22
- 1.7 The WPS WLAN Button 23
- CHAPTER 2 25
- Figure 3 AP: Wireless LAN 26
- Figure 5 AP: Status 27
- Internet 28
- Figure 17 Profile: Activate 34
- CHAPTER 3 35
- Figure 18 Password Screen 36
- Figure 19 Main Screen 36
- 3.2.1 Navigation Panel 37
- 3.2.2 Main Window 38
- 3.2.3 Status Bar 38
- CHAPTER 4 39
- Table 3 Status Screen 40
- 4.1.1 WAN Service Statistics 42
- 4.1.2 Route Info 43
- Chapter 4 Status Screens 44
- 4.1.3 WLAN Station List 45
- 4.1.4 LAN Statistics 46
- 4.1.5 Client List 47
- WAN Setup (51) 49
- LAN Setup (69) 49
- Wireless LAN (79) 49
- CHAPTER 5 51
- 5.2 What You Need to Know 52
- 5.3 Before You Begin 52
- Chapter 5 WAN Setup 54
- Chapter 5 WAN Setup 55
- 5.5.1 More Connections Edit 59
- 5.6 Technical Reference 63
- Encapsulation 64
- ENET ENCAP 64
- PPP over Ethernet 64
- IP Address Assignment 64
- Full Cone NAT 65
- Symmetric NAT 65
- Introduction to VLANs 66
- Multicast 67
- DNS Server Address Assignment 67
- CHAPTER 6 69
- 6.2 What You Need To Know 70
- 6.3 Before You Begin 71
- 6.4 The LAN IP Screen 71
- 6.5 The Client List Screen 72
- 6.6 The IP Alias Screen 73
- 6.7 Technical Reference 75
- IP Address and Subnet Mask 76
- Private IP Addresses 76
- Chapter 6 LAN Setup 78
- CHAPTER 7 79
- 7.2 What You Need to Know 80
- Radio Channels 81
- Wireless Security 81
- 7.3 Before You Begin 82
- 7.4 The General Screen 82
- Chapter 7 Wireless LAN 83
- 7.4.1 No Security 84
- 7.4.2 WEP Encryption 85
- 7.4.3 WPA(2)-PSK 86
- 7.4.4 WPA(2) Authentication 88
- 7.5 The WPS Screen 89
- 7.6 The WPS Station Screen 91
- 7.9 Technical Reference 94
- 7.9.3.1 SSID 96
- 7.9.3.2 MAC Address Filter 96
- 7.9.3.3 User Authentication 97
- 7.9.3.4 Encryption 97
- 7.9.4 WiFi Protected Setup 98
- 7.9.4.2 PIN Configuration 99
- 7.9.4.3 How WPS Works 101
- Figure 50 How WPS works 102
- REGISTRARENROLLEE 103
- SECURITY INFO 103
- REGISTRAR 103
- ENROLLEE 103
- EXISTING CONNECTION 103
- Chapter 7 Wireless LAN 106
- P-870HW-51a v2 User’s Guide 106
- CHAPTER 8 107
- LABEL DESCRIPTION 109
- 8.4 The DMZ Host Screen 111
- 8.5 Technical Reference 112
- PART III 115
- CHAPTER 9 117
- Default Filtering Policies 118
- Chapter 9 IP Filter 119
- Chapter 9 IP Filter 122
- Advanced 123
- CHAPTER 10 125
- 10.2 The Static Route Screen 126
- 10.2.1 Static Route Edit 127
- Chapter 10 Static Route 128
- CHAPTER 11 129
- 11.2 What You Need to Know 130
- 11.4 The Queue Setup Screen 131
- 11.4.1 Adding a QoS Queue 132
- Figure 66 QoS Class Setup 133
- Table 40 QoS Class Setup 133
- 11.5.1 QoS Class Edit 135
- 11.6 Technical Reference 137
- IEEE 802.1Q Tag 138
- DiffServ 138
- DSCP and Per-Hop Behavior 139
- CHAPTER 12 141
- 12.3 The Dynamic DNS Screen 142
- CHAPTER 13 143
- Figure 69 TR-069 144
- Table 44 TR-069 144
- Figure 70 Service Control 145
- Table 44 TR-069 (continued) 145
- 13.4 The IP Address Screen 146
- 13.4.1 Adding an IP Address 147
- Chapter 13 Remote Management 148
- CHAPTER 14 149
- 14.3 The UPnP Screen 150
- Installing UPnP in Windows Me 151
- Installing UPnP in Windows XP 153
- Web Configurator Easy Access 159
- Network 160
- Maintenance 163
- Troubleshooting 163
- CHAPTER 15 165
- 15.2 The General Screen 166
- Chapter 15 System Settings 168
- CHAPTER 16 169
- 16.3 The Log Settings Screen 170
- Chapter 16 Logs 172
- CHAPTER 17 173
- Figure 95 Error Message 175
- Backup Configuration 176
- Restore Configuration 177
- 17.4 The Restart Screen 178
- Chapter 17 Tools 179
- Chapter 17 Tools 180
- CHAPTER 18 181
- I forgot the password 182
- 18.3 Internet Access 183
- Chapter 18 Troubleshooting 185
- Chapter 18 Troubleshooting 186
- CHAPTER 19 187
- 19.3 Wireless Features 190
- Table 57 Wireless Features 191
- STANDARD DESCRIPTION 192
- Appendices and 193
- APPENDIX A 195
- Windows XP/NT/2000 196
- Properties 197
- Verifying Settings 198
- Windows Vista 200
- Mac OS X: 10.3 and 10.4 205
- Mac OS X: 10.5 209
- Linux: Ubuntu 8 (GNOME) 212
- Linux: openSUSE 10.3 (KDE) 218
- APPENDIX B 225
- JavaScripts 228
- Java Permissions 230
- JAVA (Sun) 231
- Mozilla Firefox 232
- APPENDIX C 235
- Subnet Masks 236
- Network Size 237
- Notation 238
- Subnetting 238
- Example: Four Subnets 240
- Table 63 Subnet 1 241
- Table 64 Subnet 2 241
- Table 65 Subnet 3 241
- Table 66 Subnet 4 241
- Example: Eight Subnets 242
- Subnet Planning 242
- Configuring IP Addresses 243
- IP Address Conflicts 244
- APPENDIX D 247
- Figure 159 RTS/CTS 250
- Fragmentation Threshold 251
- Preamble Type 251
- IEEE 802.11g Wireless LAN 251
- Wireless Security Overview 252
- IEEE 802.1x 253
- Types of EAP Authentication 254
- PEAP (Protected EAP) 255
- Dynamic WEP Key Exchange 256
- WPA and WPA2 256
- Encryption 257
- User Authentication 258
- Security Parameters Summary 260
- Antenna Overview 261
- Antenna Characteristics 261
- Types of Antennas for WLAN 261
- Positioning Antennas 262
- APPENDIX E 263
- Appendix E Common Services 264
- Appendix E Common Services 265
- APPENDIX F 267
- ZyXEL Limited Warranty 269
- Registration 270
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