Query about cross-over and straight-through cable.

Chandu_medha09Chandu_medha09 Member Posts: 6 ■□□□□□□□□□
>>Hi Guys i have a query about Straight -through and Cross-over cable.
>>Why do we use ,
1.straight- through cable between Hub and Host .
2.Cross-over cable between switch and HUB.
3. Again Straight cable between Router and Switch.
If it is because HUB don't break collission domains but switches and Routers do.SO why do we still user cross-over cable between Switch and switch. I have lot of confusions- Could any body please clear it for me.


  • kalebkspkalebksp Member Posts: 1,033 ■■■■■□□□□□
    You use cross-over cables between like devices.

    Technically it's because off the way the ports are physically designed. In order for communication to work the transmit port needs to be connected to the receive port of the device it's connecting to, and vice versa. So, routers and PCs have the same port wiring, as do switches and hubs. The only thing that makes the two groups different is that their transmit and receive contacts are switched.

    I hope that makes sense.

  • auosauos Member Posts: 186

    It is very simple just like this:-

    Group 1 (Devices That Transmit on 1,2 PIN and Receive on 3,6 PIN)
    -PC NIC
    -Network Printer

    Group 2 (Devices That Transmit on 3,6 PIN and Receive on 1,2 PIN)

    Each devices in same group must use cross-over cable.
    Each devices in different group must use Straight-Through cable.

    Because you can see the cross-over cable reverses the PIN for Transmit and Receive.

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