Gettting 100mbs where 1gb is supposed to be

Alasdairhurst · 18 Apr 2013 at 19:46

Hey guys, I've just found a solution to a problem i was having with not getting the full Internet download speeds of 120mb that i should have been getting, but this brought up a strange problem with my network setup.

I have a superhub and 2 pc's directly connected to it. one gets the full 10/100/1000 speeds fine (now i changed the cabling), the other only has a 10/100 NIC so i can't test with that one. another cable from it goes upstairs into a "RJ45 Face Plate Wall Sockets Cat6 Single 1 Port with Keys" box in the wall in my room, then out to a linksys gigabit router which i use as a switch/wifi hub then into my PC. the cables from the switch to the PC and the wall to the switch work 100% but i'm only getting 10/100 speeds to the upstairs PC

the NIC is 10/100/1000 and reads as such when plugged into the linksys, however only reads as 10/100 when plugged straight into the router (through the wall face plate)

Is there a chance that the wall plate is not wired correctly or is not rated correctly? If it wasn't wired up correctly i would have thought that it would fail to work, but it works perfectly apart from the different speeds registering?

Also does the box actually effect the network speeds? All cables are cat6e from the router to the PC.

Tealc · 18 Apr 2013 at 21:14

100Mbit just needs 2 pairs to be connected, 1000Mbit needs all 4 pairs so I'd suggest that you may have a wiring issue. Check and reterminate.

pepp77 · 18 Apr 2013 at 21:21

Tealc said:
100Mbit just needs 2 pairs to be connected, 1000Mbit needs all 4 pairs so I'd suggest that you may have a wiring issue. Check and reterminate.

Alasdairhurst · 18 Apr 2013 at 22:02

Ah, i see. I already went over with the wire pressy tool

P) but i'll try again. The ethernet side of the cable in the router is the factory wired end, so it must be the box.

bremen1874 · 18 Apr 2013 at 22:13

It's worth checking the patch cables as you find some that are only wired with two pairs rather than four.

Alasdairhurst · 18 Apr 2013 at 22:44

bremen1874 said:
It's worth checking the patch cables as you find some that are only wired with two pairs rather than four.

I bought a huge 100m roll of cat6e cable and have cut it up to use in custom lengths, and the rest of the rj45 to rj45 cables register as gigabit.

there is the following cables connected:
brown
brown white
blue
blue white
orange
orange white
green
green white

each of these cables are connected to their respective coloured holes in the wall keystone.

bremen1874 · 18 Apr 2013 at 22:50

Cat6e doesn't exist as a standard. The cable sold as Cat6e could be anything (good, bad,or indifferent) as there's no standard it needs to conform to.

Alasdairhurst · 18 Apr 2013 at 22:58

Ah, i see you are right there. As i said though, different offcuts of the same cable work perfectly fine and at decent speeds.

bremen1874 · 18 Apr 2013 at 23:17

Any chance you've wired it T568A at one end and T568B at the other? It's easily done.

Alasdairhurst · 18 Apr 2013 at 23:36

That is possible. One end is the factory setting, and the other tells you specific colours to use, but if the factory wiring was different from what the box tells you then you have a problem

bremen1874 · 18 Apr 2013 at 23:43

What do you mean by factory setting?

pepp77 · 18 Apr 2013 at 23:49

http://www.ertyu.org/steven_nikkel/ethernetcables.html

As you can see from this link there are two ways to wire a patch cable, one type A and one type B.

Could they be different at each end, although I wouldnt expect this to cause the OPs issue.

DJMK4 · 18 Apr 2013 at 23:59

To be honest MOST people conform to B standards

Orange stripe / Orange / Green Stripe / Blue / Blue Stripe/ Green / Brown Stripe / Brown

at both ends

Crossover cable has that on one end and the crossover pinout at the other end

Alasdairhurst · 19 Apr 2013 at 00:00

by factory wiring, i mean the end of the cable is already wired up to a rj45 connector.
I swapped over the cabling to the other position in the keystone and the speeds went down (it still worked though) however the speeds are stuck in that same speed when i swapped them back. The original positioning was right though (B) I looked at the cable and it said T568B on it, and i checked the cabling of the keystone in the T568B setting and that's what it originally was.

I have a little bit of room to work from so i''ll cut the cable back and try to rewire it .

bremen1874 · 19 Apr 2013 at 00:15

Did it come with a plug on just one end as part of a kit, or is it a cable where you've chopped one end off?

You can usually just about see the colour codes through a plug moulding to see if it's wired A or B, but it's almost certainly B.

Is the cable solid core or stranded?

Is it made of your Cat6e cable? I once chopped the end of a Cat6e cable off to see what it was made of. In that case it was very thin solid core CCS (possibly CCA) and there wasn't any chance it would have punched reliably.

Alasdairhurst · 19 Apr 2013 at 08:52

It came with plugs at both ends, so i kept them in place as there was no point rewiring them again. With the big cable i'm using, one end is the one with the plug at the end (that came like that), and the other is connected to the box. The cable says B, and the colours on the box are most definitely B.

The cable is stranded. It looks like this:

http://www.aceonline.co.uk/items/CAT6-UTP-ace-network-cable-solid-core.jpg

I rewired the box to the original layout as before (double checked), but now for some reason it is failing to work at all. No ethernet cable that goes though it and into the computer registers, and the connection light doesn't turn on on the PC or the router. I would think that the way that the box tells the colours is incorrect, but it did at least connect when wired this way before with the same cable, which now it doesn't.

-edit - after rewiring the cables again, it still has the same problem. It's getting pretty annoying as i just have enough cable left on the length for 1 more rewiring. I think that possibly the keystone is a duff one?

Cycrow · 19 Apr 2013 at 11:41

pepp77 said:
http://www.ertyu.org/steven_nikkel/ethernetcables.html

As you can see from this link there are two ways to wire a patch cable, one type A and one type B.

Could they be different at each end, although I wouldnt expect this to cause the OPs issue.

not actually true, there are any number of ways to wire a cable, as long as both ends match, you can put them in any order you like

what you mean is that there are 2 standards that people follow

bremen1874 · 19 Apr 2013 at 13:31

If your cable is stranded and you're trying to punch it down then you're going to have problems. You'd really need to crimp a plug onto the end or replace it with a length if solid core.

The fact that the cable has B printed on it doesnt tell you anything about how the plug on the end is wired.

I think a cheap cable tester would be a good investment.

bledd · 19 Apr 2013 at 15:27

Test each cable between two working Gigabit points

Alasdairhurst · 19 Apr 2013 at 18:57

bremen1874 said:
If your cable is stranded and you're trying to punch it down then you're going to have problems. You'd really need to crimp a plug onto the end or replace it with a length if solid core.

The fact that the cable has B printed on it doesnt tell you anything about how the plug on the end is wired.

I think a cheap cable tester would be a good investment.

I looked at the other end of the cable and it is indeed 568B as it says on the cable.

Crimping a plug to the end isn't really what i want though; it's right by the wall and would be too short to plug into anything. I need it connected to a keystone in the wall.
I already know that the cable was at least working this way before i cut it back and reattached it a few times, and all other cables that can possibly be tested have been. I have ordered a new keystone and am currently using a cat5 cable i originally used to connect the pc to the internet, and i get my full 127mb download speed through it. I will test with the new keystone when it arrives.