Slow data transfer over the network - who is to blame and what to do?

Question

Computer networks

There is a computer running Windows XP, everything works great, without failures - but there is one problem - data is transferred over the network VERY slowly, 3-5 kb / s. What does it matter if the Internet or local area is the same speed. I tried to change the network card - the effect is the same. Windows XP rearranged completely - did not help. I discarded problems with ethernet - the laptop works fine on the same cable, data is transmitted at full speed.
The question is what else can be checked and what to do with this computer?

Answer 1

As it turned out, it was not about duplexes, but simply about cheap Chinese network cards. Those. and the network tp-link built into the gigabyte motherboard and PCI gave more than 50% of lost packets in transmission. At the same time, in two laptops, the built-in network cards worked perfectly on the same link (only 80 meters long!). Now I temporarily solved the problem simply by connecting the computer through the Dlink switch, later I’ll just buy a normal network card.

Answer 2

Purely for localization of hardware / software, you can check the speed from a Linux live CD.

Answer 3

There is a possibility of dpulex mismatch ... There was a similar problem with the Cisco Catalist equipment. If the network worked in full duplex + the ports on the cisco were set to Auto - CRC errors began to pour in.

Answer 4

First pass something and show netstat -s