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51 posts

Master Geek

#268057 26-Feb-2020 09:14
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Hi everyone. Last year I bought a roll of Cat6 cable from trademe, and installed it (about 20 metres) from my modem to my Nvidia Shield Tv. I have jut realized the link speed is 100Mbps )plus I got occasional issue with it dropping to 10Mbps and had to replug it). I tried another cable and get 1000Mbps testing to my laptop.


I made a short 1 metre cable and tried it and only get 100Mbps to my computer in testing.


So I figure the cable isnt very good. I have ordered another roll of Cat6 to try out.


I have just realized I have also used some of that cable from my VDSL master filter to the modem - would this cause any issue as well?


We only have max about 40Mbps download speed - so it may not make any difference if the link speed was only 100Mbps anyway I guess? But I figured it cant hurt to have a better cable.

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4958 posts

Uber Geek


  #2427377 26-Feb-2020 11:54
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Pretty sure wiring them straight through will bugger up the pairs.


The standard is expecting data down a twisted pair, and by wiring straight through, you will be sending data down pairs that aren't twisted together.






Red/Black are twisted together


Dark Gr/Light Gr ""


Dark Blue/Light Blue  ""


Grey/Purple  ""




You should wire as follows:


Pin1 Light Green


Pin2 Dark Green


Pin3 Red


Pin4 Dark Blue


Pin5 Light Blue


Pin6 Black


Pin7 Grey


Pin8 Purple




(check a wiring standard diagram, and substitute the colours you have in pairs, for the colours they *should* be). 

51 posts

Master Geek

  #2427391 26-Feb-2020 12:13
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Yep, redo the plugs at each end, but first, just confirm that the wires are twisted in the pairs as I've assumed (take a photo and post back here if you like of the pairs in the cable you have).





And we have a WINNER! Your colour match has worked, link speed now says 1Gbps. Really happy I wont have to rewire under my house at this stage!


Thanks so much for your help!

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