mohammedmahmoud Fri, 07/20/2007 - 07:04
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Hi Carl,


Crossover cables are used between switches in order to connect Tx1 to Rx2 and vice versa (in order for the switches to exchange traffic), however there is a feature called AutoMDIX can do the crossover automatically but it is not supported in all switches.


HTH,

Mohammed Mahmoud.

carl_townshend Fri, 07/20/2007 - 08:54
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how come we dont need this when say connecting a pc to a switch then ?

mohammedmahmoud Fri, 07/20/2007 - 08:59
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Hi Carl,


Hubs and switches are deliberately wired opposite the way end stations are wired, so that when a hub or switch is connected to an end station, a "straight through" ethernet cable can be used and the pairs will match up properly. When two hub/switches are connected to each other, or two end stations are connected to each other, a "crossover" cable is used to make sure that the correct pairs are connected.


HTH,

Mohammed Mahmoud.

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