Network dropping net connection

Post by **Monty** » 18 Sep 2009, 19:29

Heya guys,

I recently put a network cable into my loft so I can get internet.

The cable is a CAT 5e, the switch is a netgear gigabit switch and my laptop supports gigabit networking. (the router is attached to the switch)

I can only get 100MBits/s though, and my internet is patchy. Does anyone have suggestions or ideas as to why?

Koko_Lion · Post by **Koko_Lion** » 18 Sep 2009, 19:41

Have a look in device manager and open the network devices property window. I think I saw a setting in there somewhere awhile back where you can set the speed to: 10/100/1000/Auto. Maybe your card has this option too.

Post by **Anthro** » 18 Sep 2009, 19:45

Did you wire ISO standard ? proper crossed over combinations ?

Post by **Monty** » 18 Sep 2009, 19:54

Anthropoid wrote:Did you wire ISO standard ? proper crossed over combinations ?

nope, its set as straight. (all the others are set like this too, and they work fine)

@Koko, I'm looking now - and didnt find anything

Post by **Anthro** » 18 Sep 2009, 20:21

SO the lappie only has 100MB/s but the rest Gigabit ?

Post by **Monty** » 19 Sep 2009, 20:48

Anthropoid wrote:SO the lappie only has 100MB/s but the rest Gigabit ?

yep.

Just an update: I took my lappie inside, connected it to two network cables - on the one it also got 100mbits (this cable runs near lots of other cables), and on the second, 1000mbits (which, afaik, doesn't run near many other cables).

Could interference be causing a drop?
Or could the drop be caused by how I've wired my cable (Brown, Brown Stripe, Orange, orange stripe, green, green stripe, blue, blue stripe)

SykomantiS · Post by **SykomantiS** » 19 Sep 2009, 21:44

It may be possible that not all of the wires are crimped correctly (as in not making contact with the plug and only 5 or 6 of the 8 maybe make contact) Can you test to see if all eight can carry signal?

Post by **Monty** » 19 Sep 2009, 21:59

SykomantiS wrote:It may be possible that not all of the wires are crimped correctly (as in not making contact with the plug and only 5 or 6 of the 8 maybe make contact) Can you test to see if all eight can carry signal?

I'm pretty sure they are crimped properly (each sub cable is at the end of the connector, etc)

How do I test each cable?

SykomantiS · Post by **SykomantiS** » 19 Sep 2009, 22:04

Wel, you need a cable tester, which I assume you don't have. Some motherboards also have windows and Bios apps for testing network cables. Alternatively, if you have a multimeter and can manage to find a needle point or something small enough to make contact with each individual connector on the plug, you can test for continuity.

Post by **Monty** » 19 Sep 2009, 22:12

Nope, no cable tester or multimeter.
I'll look for an app tomorrow

SykomantiS · Post by **SykomantiS** » 19 Sep 2009, 22:19

I dunno if one can get 3rd party apps for that. It's possible, but it's a mobo feature afaik. I might be wrong though.

Post by **Monty** » 20 Sep 2009, 12:03

SykomantiS wrote:I dunno if one can get 3rd party apps for that. It's possible, but it's a mobo feature afaik. I might be wrong though.

How should I be wiring the connectors? (i'm going to rewire mine and see if it makes a difference).

I think the ones my parents use (ie: the ones working properly) are wired like this: BR BRs G BLs BL Gs O Os (thats the order, but the colours might be different. I'll check later)

Post by **Monty** » 20 Sep 2009, 14:59

Anthropoid wrote:Did you wire ISO standard ? proper crossed over combinations ?

Anthro, you were right. Proper wiring standard, and its sorted! (I owe you yet another beer now

)

Post by **Anthro** » 20 Sep 2009, 19:02

W000T

Good to hear that it is sorted man.. !

Post by **Monty** » 22 Sep 2009, 08:34

The internet connection is still intermitent.

My mother swears it started after we put the gigabit switch in.

The router is a 100mbps ethernet, wifi enabled netgear and the gigabit switch is also a netgear. They are connected via a CAT5e cable (with correct cable crossing). All the cables involved are functioning properly (tested with a cable tester we borrowed)

Could it be because of the gigabit switch?

(and a really silly question: should the cables be plugged in on the switch, starting at port 1 and moving up in order? Or can they be plugged in anywhere?)

SykomantiS · Post by **SykomantiS** » 22 Sep 2009, 09:20

They can be plugged in anywhere.

You may have a faulty switch, if the connection is still intermittent, but then you would also have normal network problems. Is it possible to test with another switch/router?

Post by **Monty** » 22 Sep 2009, 09:31

We have an old 100mbps switch. I'll try it when i get home

Post by **Anthro** » 22 Sep 2009, 12:22

It should not matter if you choose random ports (unless those ports are faulty)
What happens if you do a constant ping to say your DNS server / a website ?
ping www.google.com -t
ping 168.210.2.2 -t

try those and tell me if you have packet loss

Post by **Monty** » 22 Sep 2009, 13:45

ok, I've started pinging the router (192.168.0.1) and it keeps responding (and the net connection hasn't died yet).

I've tried pinging the router before when the net connection was down, and I got a ping time out response

Post by **Monty** » 23 Sep 2009, 09:22

Monty wrote:ok, I've started pinging the router (192.168.0.1) and it keeps responding (and the net connection hasn't died yet).

I've tried pinging the router before when the net connection was down, and I got a ping time out response

Just an up date: i killed the pinging, and the net went down. I started the pinging again, and i got a time out response until the connection came back. It hasn't died since, so it does look like the the continued traffic to the router is keeping the connection alive.

Post by **Anthro** » 23 Sep 2009, 12:54

Maybe a 'keep alive' setting on the router ?
Pop me a mail, then I can maybe check it with you..

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