Ethernet connection directly to switch slow, directly to router is fast

svimes

svimes

svimes

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6 Jun 2013
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Might be better off in networks but as this is soho/sme I thought I would post here.

ISP with Static IP connects to Vigor 2925N Router with 5 LAN ports
Vigor 2925N Router connects to Netgear eight port switch
My Windows Server has two ports and connects directly to Router.

I have two windows XP computers and one i5 windows 7 computer connected to the switch and they are fine to access internet and our server.

I have two dell i7s on Windows 7. If they connect to the switch then accessing files on our network is very very very slow and internet access is noticeably slower. If I connect them directly to the router all is fine.

All desktop computers above specify the preferred DNS server IP addresses, which are the the ports on the Windows Server above.

Why are the Dells so fussy about connecting to the switch? What tests can I run?

Thanks
 
Yes both ports from windows 2008 server are connected by ethernet cable to the router directly.

Both the router and switch have up to 1 Gb ports.
 
Agreed with Caged - check they're negotiating at the full speed of the switch. Is the switch gigabit capable? Usually Draytek stuff has gigabit ports, so does the switch?

Also, how old is the netgear? Is it part of their prosafe range? Netgear equipment has a nasty habit of throttling data when they're on their last legs.
 
Hi - the switch and the router are at 1GB.

The netgear is a GS608 V2

What I do not uderstand is why the new i5 windows 7 PC is fine on that switch but the 2 year old i7, windows 7 dells are not?
 
I was sure there was an old reg fix for slow data transfer on win7, maybe the i5 PC has got it applied and the i7 haven't, combined with how the router/switch processes the frames. Worth a hunt around on google? Could even be Mtu related?
 
You still haven't said what speed the connection between the i7 Dells and the switch is actually being negotiated at. That's the only thing changing between everything working fine, and everything being slow.

What are the transfer speeds like between these two i7 Dells on the same switch?
 
some things to test :
1)does the switch and or the PCs have QOS enabled (quality of service)?
2)also check the network card drivers for any updates.
3) if the router isn't connected to the switch, just a standalone network do you still get the same results?
4) i presume these are all hardwired and not using wifi connections.
 
Not sure what you mean by teaming them. I simply let the router define the IP addresses apart from the server which has two reserved IP addresses using the mac addresses.
 
Caged said:
You still haven't said what speed the connection between the i7 Dells and the switch is actually being negotiated at. That's the only thing changing between everything working fine, and everything being slow.

What are the transfer speeds like between these two i7 Dells on the same switch?
Click to expand...

Sorry how do I see what speed they are negotiating at?

I'll test the speed on the dells on the switch versus router.
 
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