Objective
- Build a Category 5(CAT 5) Straight-Through Ethernet network cable
- Build a Category 5 (CAT 5) Cross-Over Ethernet network cable
- Test both the cables for a good connection
Straight through cable
A straight-through network cable is just what the name suggests, a cable that passes data straight through from one end to another end. These cables are used for a variety of connections, for instance, connecting a computer to a hub or switch, connecting a computer to a cable/ISDN/DSL modem, and linking switches and hubs together. One such cable connection is shown in the picture below:
Typically, the ports on a hub are MDIX ports that allow the machine at the other end to utilize its MDI Port without the need for a crossover cable. Through these ports, the hub automatically performs the crossover functions, which are required to properly align the cables with each other. When no hub or switch is used, the cable itself must physically perform these crossover functions.
About Cabling:
The two most common UTP (Unshielded Twisted-Pair) network standards are the 10 Mbps (10BASE-T Ethernet) and the 100 Mbps (100BASE-TX Fast Ethernet). In order for a cable to properly support 100 Mbps transfers, a Category 5 (or CAT 5) twisted pair cable must be used. This type of low loss extended frequency cable will support 10 Base-T, 100 Base-T, and the newer 100VG-AnyLAN applications. Other types of cabling include Category 3 that supports data rates up to 16 Mbps and Category 1 that only supports data rates up to 1Mbps.
The tools required to do this lab are:
1. CAT 5 network cable
2. RJ-45 Connectors
3. Cable Cutter
4. Crimping tool 5. Cable tester.
Procedure
Well, the wire has two sides. Let’s call one side … Side A and the other side … Side B. Do the following steps with Side A of the wire.
1.Remove the plastic cover from the cable up to two inches. You will see 4 twisted pairs (a total of 8 wires). In each twisted pair, one wire will be colored and the other will be white.
For example, one will be Green and the other will be White having Green marks. The latter is called GreenWhite. Similarly, there will be Brown wire twisted with Brown-White, Blue wire twisted with Blue-White, Orange twisted with Orange-White. This can be seen in Figure 2.3.
Untwist the wires and make them smooth (don’t remove the plastic covers from the metal wires).
1.Arrange the wires in the order: Orange-White, Orange, Green-White, Blue, Blue-White, Green, Brown-White, and Brown.
Pin ID Side A Side B
1 Orange-White Orange-White
2 Orange Orange
3 Green-White Green-White
4 Blue Blue
5 Blue-White Blue-White
6 Green Green
7 Brown-White Brown-White
8 Brown Brown
2.Cut the wires in a straight fashion and insert them in the RJ-45 Jack.
3.Using the Crimping tool, punch it properly. Perform Steps 1-5 for Side B.
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