D-Link DI-724P+ Инструкция по эксплуатации онлайн [72/102] 40977

Frequently Asked Questions (continued)

What type of cable should I be using? (continued)

What´s the difference between a crossover cable and a straight-through cable?

The wiring in crossover and straight-through cables are different. The two types

of cable have different purposes for different LAN congurations. EIA/TIA 568A/

568B dene the wiring standards and

allow for two different wiring color codes as

illustrated in the following diagram.

*The wires with colored backgrounds may

have white stripes and may be denoted

that way in diagrams found elsewhere.

How to tell straight-through cable from a

crossover cable:

The main way to tell the difference

between the two cable types is to

compare the wiring order on the ends

of the cable. If the wiring is the same on

both sides, it is straight-through cable. If one side has opposite wiring, it is a

crossover cable.

All you need to remember to properly congure the cables is the pinout order of

the two cable ends and the following rules:

A straight-through cable has identical ends

A crossover cable has different ends

It makes no functional difference which standard you follow for straight-through

cable ends, as long as both ends are the same. You can start a crossover cable

with either standard as long as the other end is the other standard. It makes no

functional difference which end is which. The order in which you pin the cable

is important. Using a pattern other than what is specied in the above diagram

could cause connection problems.

When to use a crossover cable and when to use a straight-through cable:

Computer to Computer – Crossover

Computer to an normal port on a Hub/Switch – Straight-through

Computer to an uplink port on a Hub/Switch - Crossover

Hub/Switch uplink port to another Hub/Switch uplink port – Crossover

Hub/Switch uplink port to another Hub/Switch normal port - Straight-through

Why can´t I access the web based conguration? (continued)