Increase speed on corporate LAN

Question

Computer networks

There was a question about increase in speed between 6 computers. I put in 1gb cards, a gigabyte switch ... I didn’t notice much growth compared to a hundredth. What other ways to increase speed are there? Cable of a higher category, heaped switch, protocol change to ip6, cards more expensive? I want to get the most out of the network.

Answer 1

Your DGE-530T are PCI cards. You will not get gigabit on them even close.
I talked with a friend who used them in his network, he says that he could not squeeze more than 120 megabits from them.

Answer 2

Category 5e cable? Then it should be enough.
The most common problem is bad gigabit switches and cards. With a switch - especially true.
Most gigabit cards normally raise 30mb / s. I heard positive reviews about Intel cards - they say, 50mb / s without problems.
With switches, the barrel is worse - I did not find intelligible descriptions. I read that the cisco ones are really fast. But they are not cheap either.
If you buy a switch - unsubscribe. You can also write a review - I think it will be interesting for everyone to read.

Answer 3

Well, if 1GB speed is not enough for you, then try fiber optic cable and equipment.
Although faster than the write speed on the HDD will not work.

Answer 4

and what did you test?
iperf says what?

Answer 5

An old 3com (year of 2003) lived in my office, which once connected houses in a local network.
he honestly gave out his 100 megabits (10-12 megabytes / s) on the network for 24 hosts, but time passed and he died, in our distant city, except for Dlink, nothing can be found, and he died suddenly, the same long thousand was bought for 12- 14 I forgot exactly, supposedly gigabit, and so he gave out a hundred square meters much worse (8-9 megabytes / s) than 3k. And where there were gigabit network cards, it was generally 5-6 meters ...

Answer 6

I think the point is in Dlink, I have about 450 Mbps on my 3750 tsiska (I think the server stumbles - since the connection is 2Gbps). Speed ​​can be increased using EtherChannel.
en.wikipedia.org/wiki/EtherChannel
I installed it on a server 2003 - there were drivers for broadcom cards and the tsiska supports this protocol.
I don’t know if there is a solution for your equipment, but if you are interested, you can dig and find it for d-link.

Answer 7

Well, they wrote crap to you ...
Firstly: is it possible that your disk subsystem can give data at such a speed? And then a million files of 1kb will never be quickly transferred, especially from a server file that has never been defragmented since installation in 2002.
Secondly: enable Jumbo Frames on network cards, this also matters.

Answer 8

we are still waiting for the results of iperf in order to test the disk i / o bottleneck hypothesis

Answer 9

And what kind of hard drives do you have on these 6 computers that you get a maximum of 14Mbps?

Answer 10

just in case, check the error counters on the network interfaces and switch ports.

Answer 11

PC: Intel Pro/1000 (PCI) network card;
Server: based on the Supermicro platform, built-in network card.
Switch: 3Com with gigabit ports, sorry, I don't remember the model now.
Everywhere UTP cat.5e.
iperf showed a stable 300 megabits / s.