Wired home network gone slow.

forgotmyname

Gigabit network cards in all computers, Gigabit 5 port switch.

Been fine for some time. Good transfer speeds. But all of a sudden Friday the speed dropped.

Now i only get 14 - 16mb/s where before i would get 40-60+.
Larger files sometimes slow to half that.

Home network not the internet. Which is fine. Just transferring files over the network.

What has happened? Its gone from a lean fast whippet to an old basset hound that never moves and fed on chocolate and cakes all day.

Lum

Edit: Ignore this. misread the OP as talking about wireless.

globalds

Have you tried anything ?

Unplugging part of the network and seeing whether it has any effect ?

You haven't done any bios updates ..I suppose you could have a damaged lead ?

kwikbreaks

globalds wrote: »

I suppose you could have a damaged lead ?

That's the most likely cause imo - gigabit uses all 4 pairs but will operate at 100Mbps on 2 pairs (or 3 I think which is most likely). Usually there are different coloured status leds showing the speed on switches and NICs which would give a quick check before starting to swap leads. I'm assuming there have been no lead changes as some only have 2 pairs to start with.

prowla

14-16 Mb/s on a Gb/s line seems ridiculously slow (as does 40-60).

Are you using Cat 5 or Cat 6 cables?

Also, is that the speed for all systems you have attached or just a particular two?

(And of course, it may be the computers rather than the network itself.)

withabix

For a start it looks like you've probably got something with a 100mbps card connected. That will slow everything else down and your switch or router will adapt to the slowest connection.

Does anyone in your house use file sharing websites? That will slow your network down if someone is seeding to the internet, as you will have loads of traffic. They may not even know they are seeding, as Vuze and other software keeps ports open and runs in the background, even if you THINK you have closed the programme down. The only way to stop this traffic is to close the programme in Task Manager.

kwikbreaks

He probably means MBps

withabix wrote: »

For a start it looks like you've got something with a 100mbps card connected. That will slow everything else down and your switch or router will adapt to the slowest connection.

Mine doesn't and I have mixed NICs on both of my switches. At one time i only had a 100Mbps ADSL router as an internet feed into a gigabit switch and the gigabit ports worked fine at a gigabit.

Enterprise_1701C

I would suggest going around unplugging one computer at a time and seeing if that makes a difference, testing the cable and the computer at the same time.

You don't say how it is set up - are they all just plugged into a switch or hard wired into a patch panel then plugged into a switch?

prowla

withabix wrote: »

For a start it looks like you've probably got something with a 100mbps card connected. That will slow everything else down and your switch or router will adapt to the slowest connection.

A switch should adapt each interface independently, so that having one 100 Mbps item connected will not affect the other ports.

forgotmyname

Sorry, I forgot where i posted this.

O2 DSL router to Aztech 5 port switch (unmanaged)

With just 2 computers on, This one and my media centre PC i was getting 60mb or so.
Turned the media PC off, Switched it back on later and speeds dropped to 14 ish.

Switched both machines off and the speed never rose above that. No matter what file i transferred.

Not tried anything other than switching them off. It worked OK before.

Enterprise_1701C

Can you borrow someone's switch? Might be the switch has gone down, might even be worth trying other ports on your switch.