User's Manual
Table Of Contents
- Chapter 8 Troubleshooting
- Appendix A Technical Specifications
- Appendix B Network, Routing, Firewall, and Basics
- Appendix C Preparing Your Network
- What You Need To Use a Router with a Broadband Modem
- Preparing Your Computers for TCP/IP Networking
- Configuring Windows 95, 98, and Me for TCP/IP Networking
- Configuring Windows NT4, 2000 or XP for IP Networking
- Configuring the Macintosh for TCP/IP Networking
- Verifying the Readiness of Your Internet Account
- Restarting the Network
- Appendix D Wireless Networking Basics
- Glossary
- Index
Reference Manual for the 108 Mbps Wireless Firewall Router WGR624v3
Network, Routing, Firewall, and Basics B-13
July 2004 202-10036-01
Inside Twisted Pair Cables
For two devices to communicate, the transmitter of each device must be connected to the receiver
of the other device. The crossover function is usually implemented internally as part of the
circuitry in the device. Computers and workstation adapter cards are usually media-dependent
interface ports, called MDI or uplink ports. Most repeaters and switch ports are configured as
media-dependent interfaces with built-in crossover ports, called MDI-X or normal ports. Auto
Uplink technology automatically senses which connection, MDI or MDI-X, is needed and makes
the right connection.
Figure B-4 illustrates straight-through twisted pair cable.
Figure B-4: Straight-Through Twisted-Pair Cable
Figure B-5 illustrates crossover twisted pair cable.
Figure B-5: Crossover Twisted-Pair Cable