viii
Contents
Chapter 7
Troubleshooting
Basic Functioning
...........................................................................................................
7-1
Power LED Not On
...................................................................................................
7-2
LAN or WAN Port LEDs Not On
...............................................................................
7-2
Troubleshooting the Web Configuration Interface
..........................................................
7-2
Troubleshooting the ISP Connection
..............................................................................
7-3
ADSL link
.................................................................................................................
7-3
WAN LED Blinking Yellow
..................................................................................
7-4
WAN LED Off
.....................................................................................................
7-4
Obtaining a WAN IP Address
...................................................................................
7-4
Troubleshooting PPPoE or PPPoA
..........................................................................
7-5
Troubleshooting Internet Browsing
..........................................................................
7-6
Troubleshooting a TCP/IP Network Using the Ping Utility
..............................................
7-6
Testing the LAN Path to Your Router
.......................................................................
7-6
Testing the Path from Your Computer to a Remote Device
.....................................
7-7
Restoring the Default Configuration and Password
........................................................
7-8
Using the Reset button
.............................................................................................
7-8
Appendix A
Technical Specifications
Appendix B
Network and Routing Basics
Related Publications
......................................................................................................
B-1
Basic Router Concepts
..................................................................................................
B-1
What is a Router?
...................................................................................................
B-2
Routing Information Protocol
...................................................................................
B-2
IP Addresses and the Internet
.................................................................................
B-2
Netmask
..................................................................................................................
B-4
Subnet Addressing
..................................................................................................
B-5
Private IP Addresses
...............................................................................................
B-7
Single IP Address Operation Using NAT
.................................................................
B-8
MAC Addresses and Address Resolution Protocol
.................................................
B-9
Related Documents
.................................................................................................
B-9
Domain Name Server
............................................................................................
B-10
IP Configuration by DHCP
....................................................................................
B-10