My 'Cat6' cable is only 100Mbps

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RyanDre

59 posts

Master Geek

#268057 26-Feb-2020 09:14

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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trig42

5889 posts

Uber Geek
+1 received by user: 2094

ID Verified

#2427377 26-Feb-2020 11:54

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.

Assuming:

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).

RyanDre

59 posts

Master Geek

#2427391 26-Feb-2020 12:13

trig42:

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!