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Cat5e wiring problem

Discussion in 'Networking' started by wdnitz, Nov 21, 2011.

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  1. wdnitz

    wdnitz Thread Starter

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    Nov 21, 2011
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    I just purchased some RJ-45 jacks for Cat5e and discovered that they were marked incorrectly. The error is that the blue pair is inverted according to 568A & 568B standards. (Pin 4 is color coded for white/blue and pin 5 is blue.) Some of these jacks were terminated onto plenum cables with correctly marked RJ-45 jacks on the other end. The effect is that TRD2+ and TRD2- get swapped from one end to the other. I'm guessing this going to cause a problem. Is it?
     
  2. Rockn

    Rockn

    Joined:
    Jul 29, 2001
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    I would say it sill cause an issue eventually. It would be best to pull them all and wire them all up 568B
     
  3. jiml8

    jiml8 Guest

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    Some NICs autodetect the way the cable is wired. If your NICs do this, you won't have any trouble. Sounds to me like you bought crossover cables without intending to.
     
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