Quick Reference Guide

M-10146-01
viii Contents
Backing Up, Restoring, or Erasing Your Settings ...........................................................7-9
How to Back Up the Configuration to a File .............................................................7-9
How to Restore a Configuration from a File ...........................................................7-10
How to Erase the Configuration ............................................................................. 7-11
Running Diagnostic Utilities and Rebooting the Router ................................................ 7-11
How to Enable Remote Management ...........................................................................7-12
How to Upgrade the Router’s Firmware .......................................................................7-13
Chapter 8
Troubleshooting
Basic Functions ..............................................................................................................8-1
Power LED Not On ...................................................................................................8-2
Test LED Never Turns On or Test LED Stays On .....................................................8-2
Local or Internet Port Link LEDs Not On ..................................................................8-2
Troubleshooting the Web Configuration Interface ..........................................................8-3
Troubleshooting the ISP Connection ..............................................................................8-4
Troubleshooting a TCP/IP Network Using a Ping Utility .................................................8-5
Testing the LAN Path to Your Firewall ......................................................................8-6
Testing the Path from Your PC to a Remote Device ................................................8-6
Restoring the Default Configuration and Password ........................................................8-7
Problems with Date and Time .........................................................................................8-8
Appendix A
Technical Specifications
Technical Specifications ................................................................................................. A-1
Appendix B
Networks, Routing, and Firewall Basics
Related Publications ...................................................................................................... B-1
Basic Router Concepts .................................................................................................. B-1
What is a Router? ................................................................................................... B-1
Routing Information Protocol ................................................................................... B-2
IP Addresses and the Internet ................................................................................. B-2
Netmask .................................................................................................................. B-4
Subnet Addressing .................................................................................................. B-4
Private IP Addresses ............................................................................................... B-7
Single IP Address Operation Using NAT ................................................................. B-8
MAC Addresses and Address Resolution Protocol ................................................. B-9