Troubleshooting, 191 | ZyXEL Communications NBG-417N instruction

24

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

•NBG-417N Access and Login

•Internet Access

•Resetting the NBG-417N to Its Factory Defaults

•Wireless Router/AP Troubleshooting

24.1Power, Hardware Connections, and LEDs

The NBG-417N does not turn on. None of the LEDs turn on.

1Make sure you are using the power adaptor or cord included with the NBG-417N.

2Make sure the power adaptor or cord is connected to the NBG-417N and plugged in to an appropriate power source. Make sure the power source is turned on.

3Disconnect and re-connect the power adaptor or cord to the NBG-417N.

4If the problem continues, contact the vendor.

One of the LEDs does not behave as expected.

1Make sure you understand the normal behavior of the LED. See Section 1.5 on page 22.

2Check the hardware connections. See the Quick Start Guide.

NBG-417N User’s Guide

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ZyXEL Communications NBG-417N manual Troubleshooting, Power, Hardware Connections, and LEDs, 191

Contents

NBG-417N Page Related Documentation About This Users GuideIntended Audience Tips for Reading User’s Guides On-Screen Need More Help? Documentation Feedback Customer Support Syntax Conventions Document Conventions Icons Used in Figures Safety Warnings Contents Overview Contents Overview NBG-417N User’s Guide Table of Contents Part II Network 111 Part III Security 143 Part V Maintenance and Troubleshooting 169 Part VI Appendices and Index Table of Contents NBG-417N User’s Guide Part Page Applications Getting to Know Your NBG-417NOverview LEDs Ways to Manage the NBG-417NGood Habits for Managing the NBG-417N Wlan / WPS PowerFront Panel LEDs and WPS Button LED Color Status Description Getting to Know Your NBG-417N NBG-417N User’s Guide Overview WPS Button WPS Button NBG-417N User’s Guide Accessing the Web Configurator Introducing the Web Configurator Change Password Screen Procedure to Use the Reset Button Resetting the NBG-417NNavigating the Web Configurator Icon Description Status Screen Router ModeStatus Screen Icon Key WPS Web Configurator Status Screen Router ModeLabel Description Dhcp Link TAB Function Navigation Panel NAT Screens SummaryLAN WDS Mgmt Summary Dhcp TableWWW Summary Packet Statistics Summary Packet Statistics Summary Wlan Station Status Summary Wireless Association List This is the index number of an associated wireless station Introducing the Web Configurator NBG-417N User’s Guide Connection Wizard Wizard Setup System Name Connection Wizard System Information Wizard System Information Domain Name Ssid Connection Wizard Wireless LAN Extend WPA-PSK or WPA2-PSK Security Connection Wizard Internet Configuration Pptp Ethernet ConnectionPPPoE Connection Connection Description Type Wizard PPPoE Connection Wizard Pptp Connection Pptp Connection Wizard Your IP Address Your IP Address Private IP Address Ranges WAN IP Address AssignmentIP Address and Subnet Mask DNS Server Address Assignment Wizard WAN IP and DNS Server Addresses WAN IP and DNS Server Address Assignment Wizard WAN MAC Address WAN MAC Address Connection Wizard Complete Connection Wizard Complete Setting your NBG-417N to AP Mode AP Mode Maintenance Sys OP Mode General Status Screen AP Mode Wlan Label Menu AP Mode Configuring Your Settings LAN IP LAN SettingsWlan and Maintenance Settings Logging in to the Web Configurator in AP Mode AP Mode NBG-417N User’s Guide Tutorials How to Connect to the Internet from an AP Push Button Configuration PBC NBG-417N Example WPS Process PIN Method WPA-PSK Tutorial Network Wireless LAN General Configure Your Notebook Connecting a Wireless Client to a Wireless Network t Bandwidth Management for your Network Configuring Bandwidth Management by Application Tutorial Priority Queue Configuring Bandwidth Management by Custom Application FTP Configuring Bandwidth Allocation by IP or IP RangeRtsp VDO Live WAN LAN IP Services and ValuesFields Services Real Audio Rtsp VDO Live FTP Tutorials NBG-417N User’s Guide Network Page Example of a Wireless Network Wireless LAN What You Should Know Wireless Security OverviewWhat You Can Do Ssid WPA-PSK WPA2-PSK Types of Encryption for Each Type of AuthenticationNo Authentication Radius Server WPA Network Wireless LAN General General Wireless LAN Screen WPA2-PSK are available in this field No Security WEP Encryption Network Wireless LAN General No Security Ascii WEP WPA-PSK/WPA2-PSK MAC Filter Security Mode field MAC Network Wireless LAN MAC Filter Dtim Wireless LAN Advanced ScreenRTS/CTS CTS Quality of Service QoS Screen Network Wireless LAN QoS Network Wireless LAN QoS Application Priority Configuration Application Priority Configuration FTP WPS Screen Network Wireless LAN WPS Scheduling Screen WPS Station Screen Whole day Network Wireless LAN Scheduling WDS Screen Network Wireless LAN WDS Between the NBG-417N and any wireless clients Security Mode Static WEP ASCII/HEX Method Shared Key Network Wireless LAN WDS WPA-PSK/WPA2-PSK Security Mode WPA-PSK/WPA2-PSK Wireless LAN NBG-417N User’s Guide WAN 100 Configuring Your Internet ConnectionWhat You Need To Know WAN MAC Address Multicast101 102 NetBIOS over TCP/IPAuto-Bridge 103 Internet ConnectionEthernet Encapsulation WAN MAC PPPoE Encapsulation104 Network WAN Internet Connection PPPoE Encapsulation 105 106 Pptp Encapsulation Network WAN Internet Connection Pptp Encapsulation 107 WAN MAC Address 108 109 Advanced WAN Screen 110 111 LAN 112 IP Pool SetupLAN TCP/IP 113 LAN IP Screen 114 115 Dhcp Server 116 General ScreenAdvanced Screen Network Dhcp Server Advanced 117 118 Client List Screen Network Dhcp Server Client List 119 120 121 Network Address Translation NAT 122 General NAT Screen 123 NAT Application Screen Network NAT Application 124 125 126 NAT Advanced Screen 127 Trigger Port Forwarding Example 128 Two Points To Remember About Trigger Ports 129 Dynamic DNSDynDNS Wildcard DNS Dynamic DNS Screen130 131 132 133 Part 134 135 Firewall 136 About the NBG-417N Firewall 137 Services ScreenGeneral Firewall Screen Icmp 138 139 Content FilteringContent Filtering Profiles Restrict Web Features Keyword Blocking URL Checking Filter Screen140 Domain Name or IP Address URL Checking Technical ReferenceCustomizing Keyword Blocking URL Checking 141 File Name URL Checking 142Full Path URL Checking 143 Management 144 145 Static Route 146 IP Static Route Screen 147 Static Route Setup Screen 148 149 Bandwidth Management 150 General Configuration 151 Advanced Configuration Management Bandwidth Mgmt Advanced 152 Same port number again 153You can either leave the second port field blank or enter 154 User Defined Service Rule ConfigurationPriority Levels 155 Predefined Bandwidth Management ServicesMedia Bandwidth Management Setup Services Service Description 156 Services and Port Numbers 157 Remote Management 158 System TimeoutRemote Management Limitations Remote Management and NAT 159 WWW Screen 160 NAT Traversal How do I know if Im using UPnP?Universal Plug-and-Play UPnP 161 162 UPnP Screen 163 Using UPnP in Windows XP Example Network Connections 164 165 Internet Connection Properties Advanced Settings 166 Web Configurator Easy Access Network Connections My Network Places 167 Network Connections My Network Places Properties Example 168 169 Maintenance Troubleshooting 170 171 SystemSystem General Screen 172 173 Time Setting Screen Select User Defined Time Server Address and enter the IP 174 175 176 177 Logs 178 View Log Screen 179 ToolsFirmware Upload Screen 180 Maintenance Tools Firmware Network Temporarily Disconnected Upload Error Message 182 Configuration ScreenBackup Configuration 183 Restore ConfigurationMaintenance Restore Configuration 184 Back to Factory DefaultsRestart Screen Router Sys OP Mode185 186 IP Address in AP Mode 187 Maintenance Sys Op Mode General AP 188 189 LanguageLanguage Screen 190 191 TroubleshootingPower, Hardware Connections, and LEDs 192 NBG-417N Access and Login Advanced Suggestions 193 194 Internet Access 195 Resetting the NBG-417N to Its Factory Defaults 196 Wireless Router/AP Troubleshooting 197 Can access the Web Configurator after I switched to AP mode 198 PWR, LAN1-4, WAN, WLAN/WPS Product SpecificationsHardware Features 199 200 Firmware FeaturesSuch as microwave ovens, wireless phones Bluetooth enabled devices, and other wireless LANs 201 202 203 Appendices Index 204 205 Introduction to IP AddressesStructure 1ST 2ND 3RD 4TH Octet Subnet Masks206 Subnet Mask Identifying Network Number Binary 1ST 2ND 3RD 4TH Decimal Octet 207Network Size Subnet Masks Alternative Subnet Mask Notation Notation208 Maximum Host Numbers 209 Subnetting 210 Example Four Subnets IP/SUBNET Mask Network Number Last Octet BIT Value 211 212 Example Eight SubnetsSubnet Planning NO. Borrowed Subnet Mask NO. Hosts PER Host Bits Subnets Configuring IP Addresses213 16-bit Network Number Subnet Planning Private IP Addresses 214 215 Disable pop-up BlockersInternet Explorer Pop-up Blockers 216 Enable pop-up Blockers with Exceptions 217 Select Settings…to open the Pop-up Blocker Settings screen 218 JavaScripts Internet Options Security 219 220 Java Permissions Java Sun 221 Java Sun 222 223 Setting up Your Computer’s IP Address 224 Installing ComponentsWindows 95/98/Me 225 Configuring 226 Verifying Settings 227 Windows 2000/NT/XP Windows XP Control Panel 228 Windows XP Local Area Connection Properties 229 Windows XP Internet Protocol TCP/IP Properties 230 Windows XP Advanced TCP/IP Properties 231 232 233 Macintosh OS 8/9 Macintosh OS 8/9 TCP/IP 234 235 Macintosh OS 236 Using the K Desktop Environment KDELinux Red Hat 9.0 KDE Ethernet Device General 237 238 Using Configuration Files Red Hat 9.0 DNS Settings in resolv.conf Red Hat 9.0 Static IP Address Setting in ifconfig-eth0 240 Verifying Settings 241 Wireless LAN TopologiesAd-hoc Wireless LAN Configuration 242 Basic Service Set 243 Channel RTS/CTS 244 245 Ieee 802.11g Wireless LANFragmentation Threshold Preamble Type Data Rate Modulation Mbps Ieee246 Ieee 802.11g EAP-MD5 Message-Digest Algorithm Types of Authentication247 Types of Radius Messages Peap Protected EAP EAP-TTLS Tunneled Transport Layer Service248 EAP-TLS Transport Layer Security Encryption Comparison of EAP Authentication TypesWPA2 249 250 User Authentication 251 25.0.2 WPA2-PSK Application Example25.0.3 WPA2 with Radius Application Example 252 Wireless Security Relational MatrixAuthentication Encryptio Enter METHOD/ KEY Security Parameters Summary Name Protocol Ports Description Examples of Services253 254 255 256 Disclaimer CopyrightCertifications 257 Industry Canada Statement 258FCC Radiation Exposure Statement Viewing Certifications 259IC Radiation Exposure Statement Registration ZyXEL Limited WarrantyEnd-User License Agreement for NBG-417N 260 261 262 263 264 265 Index Essid 266 Radius 267 Ssid 31, 55, 76 268 269 270