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Re: [K12OSN] LTSP slows down on subnet



Hi,
Just a thought is your Cat5 cabling up to spec... 10Mbps ethernet will work in a hub enviroment with faulty wiring
when you got to 100Mbps all the problems appear... ie split pairs etc..



Les Mikesell wrote:


On Sun, 2005-01-23 at 13:40, Jason Waskiewicz wrote:



I tried out an old hub that has been in storage, but it was unacceptably
slow. I then drove to the city and bought a switch. I had no improvement
in speed.



Did you use the 2-NIC setup on your server with the switch and your clients on the 2nd nic?



When I reconnect the clients and server to the school network, they all
speed up (although still unacceptably slow). This is true without changing
a single setting!

Can someone help me? I'm new to this and I can't find this particular error.



One of the worst things that can happen speed-wise is a duplex mismatch between the NIC and switch port. Hubs always run half-duplex; switches can do either but you want them to use full duplex. Most things will negotiate this correctly these days but it is still possible to go wrong. Ifconfig will show if the interfaces are seeing errors, ethtool or mii-too will show the duplex setting. Make sure both the server NIC and the switch port where it is connected are running in full duplex. If ifconfig still shows errors on the interface you probably have a wiring problem.





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