Filter
Top Products
Contents vii
202-10090-02 v 1.4, July 2005
Power LED Not On ...................................................................................................7-1
LEDs Never Turn Off ................................................................................................7-2
Local or Internet Port LEDs Not On .........................................................................7-2
Troubleshooting the Web Configuration Interface ..........................................................7-3
Troubleshooting the ISP Connection ..............................................................................7-4
Troubleshooting a TCP/IP Network Using a Ping Utility .................................................7-5
Testing the LAN Path to Your Router .......................................................................7-5
Testing the Path from Your PC to a Remote Device ................................................7-6
Restoring the Default Configuration and Password ........................................................7-7
Problems with Date and Time .........................................................................................7-7
Appendix A
Technical Specifications
Appendix B
Network, Routing, Firewall, and 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-7
MAC Addresses and Address Resolution Protocol ................................................. B-8
Related Documents ................................................................................................. B-9
Domain Name Server .............................................................................................. B-9
IP Configuration by DHCP ........................................................................................... B-10
Internet Security and Firewalls .................................................................................... B-10
What is a Firewall? ................................................................................................ B-10
Stateful Packet Inspection ...............................................................................B-11
Denial of Service Attack ..................................................................................B-11
Ethernet Cabling ...........................................................................................................B-11
Category 5 Cable Quality ...................................................................................... B-12
Inside Twisted Pair Cables .................................................................................... B-12
Uplink Switches, Crossover Cables, and MDI/MDIX Switching ............................ B-14