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ZyXEL NBG2105 User Guide - Page 121

Troubleshooting

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CHAPTER 17 Troubleshooting 17.1 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 • NBG2105 Access and Login • Internet Access • Resetting the NBG2105 to Its Factory Defaults • Wireless LAN Connections 17.2 Power, Hardware Connections, and LEDs The NBG2105 does not turn on. None of the LEDs turn on. 1 Make sure you are using the power adaptor included with the NBG2105 or have connected the NBG2105 to a computer using a USB cable. 2 Make sure the power adaptor is connected to the NBG2105 and plugged in to an appropriate power source. Make sure the power source is turned on. 3 Disconnect and re-connect the power adaptor to the NBG2105. 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 1.8.1 on page 17. 2 Check the hardware connections. See the Quick Start Guide. 3 Inspect your cables for damage. Contact the vendor to replace any damaged cables. 4 Disconnect and re-connect the power adaptor to the NBG2105. 5 If the problem continues, contact the vendor. NBG2105 User's Guide 121

Section	Page
Contents Overview	3
Table of Contents	5
Introduction	13
1.1 Overview	13
1.2 Applications	13
1.3 Ways to Manage the NBG2105	13
1.4 Good Habits for Managing the NBG2105	13
1.5 Resetting the NBG2105	14
1.5.1 How to Use the RESET Button	14
1.6 The WPS Button	14
1.7 The Clone MAC Button	15
1.7.1 Cloning a computer's MAC address	15
1.7.2 Restoring the default MAC address	15
1.8 General Hardware Features	16
1.8.1 LEDs	17
Introducing the Web Configurator	19
2.1 Overview	19
2.2 Accessing the Web Configurator	19
2.2.1 Login Screen	20
Operation Modes	21
3.1 Overview	21
3.2 What You Can Do	21
3.3 Router Mode	21
3.3.1 Setting Router Mode	22
3.3.2 Navigation Panel	22
3.4 Access Point Mode	24
3.4.1 Setting Access Point Mode	25
3.4.2 Navigation Panel	25
3.5 Client Mode	27
3.5.1 Setting Client Mode	27
3.5.2 Navigation Panel	27
3.6 WISP + UR Mode	29
3.6.1 Setting WISP + UR Mode	29
3.6.2 Navigation Panel	29
Router Setup Wizard	33
4.1 Overview	33
4.2 Welcome Screen	33
4.3 WAN Interface Setup	33
4.3.1 WAN Access Type: Static IP	34
4.3.2 WAN Access Type: DHCP Client	34
4.3.3 WAN Access Type: PPPoE	35
4.4 Wireless Network Name (SSID) Setup	36
4.5 Wireless Security	36
4.5.1 Encryption: None	37
4.5.2 Encryption: WEP	37
4.5.3 Encryption: WPA-PSK, WPA2-PSK or WPA2-PSK Mixed	38
AP Setup Wizard	41
5.1 Overview	41
5.2 Welcome Screen	41
5.3 Wireless Network Name (SSID) Setup	41
5.4 Wireless Security	42
5.4.1 Encryption: None	42
5.4.2 Encryption: WEP	43
5.4.3 Encryption: WPA-PSK, WPA2-PSK or WPA2-PSK Mixed	44
Client Setup Wizard	45
6.1 Overview	45
6.2 Welcome Screen	45
6.3 Wireless Network Name Setup	45
6.4 Wireless Security	47
6.4.1 Encryption: None	47
6.4.2 Encryption: WEP	47
6.4.3 Encryption: WPA-PSK or WPA2-PSK	48
WISP+UR Setup Wizard	51
7.1 Overview	51
7.2 Welcome Screen	51
7.3 WAN Interface Setup	51
7.3.1 Static IP	51
7.3.2 DHCP Client	52
7.3.3 PPPoE	53
7.4 Wireless Network Name Setup	54
7.5 Wireless Security	55
7.5.1 Encryption: None	55
7.5.2 Encryption: WEP	56
7.5.3 Encryption: WPA-PSK or WPA2-PSK	56
Tutorials	59
8.1 Overview	59
8.2 Set Up a Wireless Network with WPS	59
8.2.1 Push Button Configuration (PBC)	59
8.2.2 PIN Configuration	60
8.3 Configure Wireless Security without WPS	61
8.3.1 Configure Your Notebook	63
LAN	69
9.1 Overview	69
9.2 What You Can Do	69
9.3 What You Need To Know	69
9.3.1 IP Pool Setup	70
9.3.2 LAN TCP/IP	70
9.4 LAN Interface Setup Screen	70
9.4.1 Active DHCP Client Screen	71
WAN	73
10.1 Overview	73
10.2 What You Can Do	73
10.3 What You Need To Know	73
10.3.1 Configuring Your Internet Connection	73
10.4 WAN Interface Setup	74
10.4.1 Static IP	74
10.4.2 DHCP Client	75
10.4.3 PPPoE	76
Quality of Service (QoS)	79
11.1 Overview	79
11.2 QoS Setup Screen	79
Dynamic DNS (DDNS)	81
12.1 Overview	81
12.2 What You Need To Know	81
12.3 Dynamic DNS	81
Wireless LAN	83
13.1 Overview	83
13.1.1 What You Can Do	83
13.1.2 What You Should Know	84
13.2 Wireless Basic Screen	86
13.3 Active Wireless Clients Screen	87
13.4 Advanced Wireless Settings Screen	88
13.5 Wireless Security	89
13.5.1 Disabled	89
13.5.2 WEP Encryption	90
13.5.3 WPA-PSK/WPA2-PSK/WPA2-PSK Mixed	91
13.6 Site Survey Screen	92
13.7 Site Survey: Wireless Security	93
13.7.1 None	93
13.7.2 WEP Encryption	93
13.7.3 WPA-PSK/WPA2-PSK Encryption	94
13.8 WPS Screen	95
13.9 MAC Filtering Screen	97
Firewall	99
14.1 Overview	99
14.2 What You Can Do	99
14.3 What You Need To Know	99
14.4 Port Filtering Screen	100
14.5 IP Filtering Screen	101
14.6 MAC Filtering Screen	101
14.7 URL Filtering Screen	102
Management	105
15.1 Overview	105
15.2 What You Can Do	105
15.3 NTP Screen	105
15.4 Password Screen	106
15.5 Upgrade Firmware Screen	107
15.6 Backup/Restore Screen	108
15.7 Router Operation Mode Screen	109
15.8 Language Screen	109
15.9 Restart Screen	110
Status	111
16.1 Overview	111
16.2 What You Can Do	111
16.3 Status Screen	111
16.3.1 Router Mode	111
16.3.2 AP Mode	113
16.3.3 Client Mode	114
16.3.4 WISP+UR Mode	115
16.4 Statistics Screen	117
16.5 System Log Screen	118
Troubleshooting	121
17.1 Overview	121
17.2 Power, Hardware Connections, and LEDs	121
17.3 NBG2105 Access and Login	122
17.4 Internet Access	123
17.5 Resetting the NBG2105 to Its Factory Defaults	124
17.6 Wireless LAN Connections	125
Pop-up Windows, JavaScript and Java Permissions	127
Legal Information	137