Straight and Crossover Cable
• Examples of common Ethernet network cables are straight and crossover cables. These Ethernet network cable are made of four pairs of high performance cables consisting of twisted pair conductors used for data transmission.
• The ends of the cable are called RJ-45 connectors.
• Straight and crossover cables can be Cat3,Cat5, Cat5e, or Cat 6 UTP cable; the main difference is that each type will have different wire arrangements and purpose.
Straight Cable
• You usually use straight cable to connect different type of devices. This type of cable will be used most of the time and can be used to:
1. Connect a computer to a switch/hub's normal port.
2. Connect a computer to a cable/DSL modem's LAN port.
3. Connect a router's WAN port to a cable/DSL modem's LAN port.
4. Connect a router's LAN port to a switch/hub's uplink port. (normally used for expanding network)
5. Connect 2 switches/hubs with one of the switch/hub using an uplink port and the other one using normal port.
Crossover Cable
• Sometimes you will use crossover cable;its usually used to connect same type of devices. A crossover cable can be used to:
1. Connect 2 computers directly.
2. Connect a router's LAN port to a switch/hub's normal port. (normally used for expanding network)
3. Connect 2 switches/hubs by using normal port in both switches/sides.
• Generally, a straight-through cable is used to connect end node devices to a networking device. On the other hand, a cross over cable is used to connect same type of devices (e.g., PC-PC, switch-switch, router-switch [for expanding a network])
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