Strange network Behaviour

M

mangroa

New Member
Im getting some strange behaviour on my desktop PC.

Its connected to a Linksys WAG54G using CAT5.

Upload speeds from the PC to router are very slow. Downloading is fine.

I've been using Raccoon Speed Test to test the speed as follows...

PC (CAT5) ->WAG54G->Laptop(CAT5)

If I set the network speed on the PC to 10Mbps Full Duplex I get about 8Mbps throughput which seems about right.

If I set it to 100Mbps or Auto negotiate it falls to about 0.7Mbps.

This is totally the reverse of what Id expect.

Changing the direction of data to:
Laptop -> WAG54G -> PC

Gives 77Mbps when PC is set to 100Mbps Full Duplex.

So the problem seems to happen only when the PC is uploading.

Its a Realtek 8139/810x on the PC motherboard. I also get the same problem when I add a new PCI Realtek 8139 card.

Any ideas whats going on???
Thanks
Alan
 
check the ethernet cables (cat5) are they new? Did you splice them yourself?
These do get old, and loose the performance.
 
Thanks for replying.
Cables are only about 2 years old.
I've swapped them with new ones aswell. No difference at all.

I do have a DECT phone and a 2.4ghz wireless cctv cam receiver sat near by. Could this be causing problems??
 
Yes it could be causing it... But it would be more random. Try changing the channel your router broadcasts on. See if that affects the speeds at all.
 
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