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I recently installed one cat6 cable, Cable is working, meanwhile in 2 of 3 devices, the auto negotiation is set to 100mbps, i was able to manually force to gigabit on one of them with success, i did not try on the other.

I tried a RJ-45 cable tester and all the 8 wires gave a green light, all terminations are set to T-568A

Is this still a cable issue ?

Edit: cable tested at one device at the time, all ports are gigabit capable, seems to me a negotiation issue, probably with the NIC's

Edit2 : it's probably solved, i crimped again but this time with TA-568B, cable tester gave ok once again and i got a successful auto-negotiation on one of the devices that didn't worked before. I got to test on the other one that i can't test now.

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    How exactly is one cable connected to 3 devices?
    – user1686
    Sep 13 at 16:55
  • one at the time
    – Albertos
    Sep 13 at 17:12
  • Are all the devices ethernet ports capable of gigabit speed? If they arent then you will only have 100 mbits speed connection.
    – Petepf
    Sep 13 at 17:27
  • Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer.
    – Community Bot
    Sep 13 at 17:42
  • All ports are gigabit
    – Albertos
    Sep 13 at 19:30

1 Answer 1

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it's probably solved, i crimped again but this time with TA-568B, cable tester gave ok once again and i got a successful auto-negotiation on one of the devices that didn't worked before. I got to test on the other one that i can't test now.

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  • As it’s currently written, your answer is unclear. Please edit to add additional details that will help others understand how this addresses the question asked. You can find more information on how to write good answers in the help center.
    – Community Bot
    Sep 13 at 22:09

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