Cannot connect at 1gbps

stuppy

stuppy

stuppy

Permabanned
Joined
7 Nov 2002
Posts
1,656
Location
Over there
Hi,

I have installed 2 RJ45 faceplate boxes in my dining room and my bedroom. They are connected by Cat5e cables that run outside the back of the house up the wall.

I cannot for the of me to get the computer downstairs to connect at 1gbps as it has done before.

I have a Netgear GS108 Gigabit switch my bedroom. A cable runs from that, to the RJ45 faceplate in my room - which then runs through another cable explained above. Then in the dining room, there is another cat5e connecting the faceplate downstairs to my server. I can't get it to connect anything above 100mbps.

I have a PC and a Mac in my room whch connect to the same switch, they connect at 1gbps. So it is obviously sommet to do with the faceplates.

I have just finished rewiring them incase I messed up, but exactly the same thing. I have swapped the cables round to see if that makes ad ifferent - no.

The card in the server that i cant get 1gbps is a GA311 Netgear. As I have said, this has worked before I installed these 2 faceplates. Just rang a direct cable from the switch to the computer in question and that worked fine.

I would say the total distance of cabling is about 15-20 meters so that should be the problem. Just do not ge it.

Any ideas?
 
right its sorta hard to understand how you've got this setup, but have you tried a different cable outside the house? it could be that yours is damaged perhaps?
 
sja360 said:
right its sorta hard to understand how you've got this setup, but have you tried a different cable outside the house? it could be that yours is damaged perhaps?
Click to expand...

It is hard to explain the setup ill try again.

[Cable Modem] ---- [Server] ---- [RJ45 Faceplate Downstairs] -- CAT5E OUTSIDE -- [RJ45 Faceplate Upstairs] ---- [Gigabit Switch]

Coming off the switch is also a Mac and a Vista box which link up fine @ 1gbps.

The cables outside have only been out there for 2-3weeks. Its brand new CAT5E cable I bought.
 
Yeah its a Netgear GA311. Have had it running at 1gbps before when there was a Cat5e cable running direct from the switch to the server through the house. But I installed these faceplates to goutside the house cause its 100 times neater. But now it seems to be affecting performance.

There has got to be a way to sort it! come on you network gurus ;)
 
The only thing it could be then, is the length of the cable, however I doubt 15-20 meters is enough to make it not connect at 1gb/s... or, the faceplates.

Assuming you've connected them up correctly, which you said you have, I can't see what else it could be.

Have a browse here to make sure you've wired them up right for 1000base-t, other than that, I'm out of ideas. :(
 
Face plates have been known to degrade the signal. You could try to rewire them, but the chances are you won't get much of an improvement.
 
Well that sucks.

The complete length of the 3 cables that are connected by the faceplates is no more then 20 metres.

I think i am going to run a direct cable again just to be sure that connects at 1gbps. If it works then I might remove the cables and then just run one big long cable through the holes already drilled. Not exactly what I wanted but I am never likely going to have to remove the cables across the room so.

Think I am going to find some proper outdoor graded cable to make sure it withstands the weather.

Thanks for your ideas guys.
 
Whats the difference?

Edit : Is stranded the slightly thicker, more flexible stuff? And Solid Core is really tightly packed?
 
Have ordered a big roll of external grade Cat5e. Am just gonna do a direct switch to pc connection trhough the holes in the wall :/
 
have you tried swapping your patch cables?i.e. the ones from your nic/switch to the faceplates?
i had similar trouble trying to use the cale from a nas box.box was rated to 1000 but cable only let it connect at 100.swapped cable and bingo 1000 instantly :)
 
Hi there,

I had exactly the same problem when connecting up my house.

From a netgear switch in my study, outside down exterior wall, back into living room into netgear switch. When I first wired it could not get more than 100 mb on any port although stuff plugged in locally worked at 1gb.

After going through what you have done and pulling my hair out I rewired the faceplates for the 100th time, but this time with the end of the wires striped. It seems in my case although the croning tool had made the connections the unmanaged switches couldn't sync at 1gb properly (I blame the cheap switches personally) until the wires were striped to bare cores and pushed into the faceplate connections that way..... Could be worth a try.

Cheers,
Jamie.
 
Hmmm. I could try it.

Just spent 100 quid on a 300m roll of external grade cat5e though :) Suppose I could wire the new external stuff up to the faceplates and see what result I get.

thanks for that tip :) will let you know how it pans out
 
cat 6 cable is whats best to use. but it sounds like there is too much signal loss on the faceplate to maintain a 1gig connection.

only thing you can do is boost power over the cables, there is a seperate device that can do this, but may cost a bit, or use better faceplates with silver connectors.
 
Got the roll of cable today. First of all - what excellent packing! :) I was expecting it to be just on a big roll that would be an arse but the box it comes in has a hole in it that the cable feeds though as you need it :)

Got it installed now - connected first time at 1gbps - so it was the faceplates. Bah - waste of time putting them in!

Lesson Learnt!
 
The problem is at the faceplate nothing more.

Distance doesnt come into play as ethernet has a range of 100m standard whether its cat5e or cat6 being used, there are additions too this rule but its not relevant here.

What i would check on the faceplate is that you have properly terminated all four pairs (absolute requirement for Gigabit)

The cable specification base-line is ANSI/TIA/EIA-568-A-1995. This means that if you know your cat5 cable was manufactured to this standard then it will support Gigabit Ethernet. Cat5 cable manufactured to the old specification may work or it may not - you need to run some tests. Cat5e and cat6 being higher spec cables will clearly support Gigabit Ethernet.

Maximum runs are the standard 100m (~300ft).

Gigabit Ethernet uses all 4 pairs (8 conductors). The transmission scheme is radically different (PAM-5 a 5 level amplitude modulation scheme) and each conductor is used for send and receive.

Crossed Gigabit Ethernet cables must cross all 4 pairs.

If you can get your hands on a half decent ethernet cable tester do that, there inexpensive for basic functions.
 
You must log in or register to reply here.
Back
Top Bottom