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Crossover Cable

The crossover cable can be used to connect

Switch to switch

Hub to hub

Host to host

Hub to switch

Router direct to host

The same four wires are used in this cable as in the straight-through cable; we just connectdifferent pins together. Fig. 8 shows how the four wires are used in a crossover Ethernet cable.

Notice that here we connect pins 1 to 3 and 2 to 6 on each side of the cable.

Fig. 8

Rolled Cable

Although rolled cable isnt used to connect any Ethernet connections together, you can use a

rolled Ethernet cable to connect a host to a router console serial communication (com) port with

additional converter. If you have a C isco router or switch, you would use this cable to connect

your PC running HyperTerminal to the Cisco hardware. Eight wires are used in this cable to

connect serial devices, although not all eight are used to send information, just as in Ethernet

networking. Fig. 9 shows the eight wires used in a rolled cable.

Fig. 9

Once you have the correct cable connected from your PC to the C isco router or switch, you can

start HyperTerminal to create a console connection and configure the device. Set the

configuration as follows:

Bits per second: 9600

Data bits: 8

Parity: none

Stop bits: 1

Flow control: none

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