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12.31.2007 at 06:56PM PST, ID: 23051632
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What is the difference in using straight through cable and crossover cable in connecting a switch?
Tags: straight, cable, through, crossover, difference
What is the difference in using straight through cable and crossover cable in connecting a switch?

I have read some books that to connect a two switch together you have to use crossover cable, but I notice  in our company I am currently working they use straight cable to connect switches together.

What would be the difference between the two? Is there any disadvantages or advantages?

Jack
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Question Stats
Zone: Networking
Question Asked By: JackOfPH
Solution Provided By: Marakkar
Participating Experts: 3
Solution Grade: A
Views: 103
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12.31.2007 at 07:07PM PST, ID: 20558568

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12.31.2007 at 07:35PM PST, ID: 20558642

Rank: Master

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12.31.2007 at 07:07PM PST, ID: 20558568
A crossover cable help to connect two computer devices peer-to-peer by switching Tx and Rx pins by making them one talk and the other listen, and the switches each other are no different.

Most of the switches today will have an uplink port equipped with a button when pressed it works as a crossover.  Otherwise you can use a crossover cable.
Accepted Solution
 
12.31.2007 at 07:35PM PST, ID: 20558642

Rank: Master

To add to the above; in the past cross-over cables were used to link like devices, such as a router to a router, a switch to a switch, or PC to PC (directly) where a straight through cable, which is much more common, is used for un-like devices such as a PC to a switch. However, today many switches and routers will automatically detect transmit and receive connections/pins and automatically make the necessary adjustments, allowing you to just use straight through cables.

If interested the pin configurations can be seen in the following diagram:
http://www.incentre.net/incentre/frame/ethernet.html
Assisted Solution
 
 
12.31.2007 at 07:54PM PST, ID: 20558657
When connecting "like" devices you need a "cross over" cable - this cable connects the receive pair of one device to the send pair of the other device.  Some devices have "Auto Cross Over Detetection" to eliminate the need for a cross over cable.

The disadvantage would be in knowing which of your cables ar straight through or cross over.
 
 
12.31.2007 at 11:20PM PST, ID: 20559004
Thanks Jack.
Cheers !
--Rob
 
 
 
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