In reply to a post by DLS:

In reply to a post by trogoy:

I'm wireless and the router is about 8ft away from one pc. Laptop is used in various places throughout the premises. I get same speeds, wireless and wired. I get the full 40000kbps at the socket (been tested twice via JDSU test). I should be getting well over 35mb+

OK, at 8ft you ought to be able to see most or all of the full WAN bandwidth with wireless; I can pull 30 Mbit/s at 12ft through one solid wall. Have you verified that you can achieve this sort of bandwidth (or better, particularly if wired) between systems on your LAN?

Pinging via wireless is a different matter; the extra latency and jitter means that such measurements aren't particularly useful except as an indicator of the wireless network performance. You might be able to calibrate out a few extra milliseconds in a clean environment, but it's not unusual to see bursts of several hundred milliseconds, particularly if there's other WiFi or RF activity (e.g., from past experience, some Bluetooth devices and a microwave oven) nearby.

yes i have 40000kbps at the socket and should be getting well over 35mb wireless.

In reply to a post by trogoy:

yes i have 40000kbps at the socket and should be getting well over 35mb wireless.

Previously, you mentioned that the 40 Mbit/s at the socket was measured by BT using a JDSU, so that'll be the VDSL2 line sync. My question was about the bandwidth you can achieve on your LAN side, between two of your systems connected to the BT router, wired or wireless (e.g., transferring a file large enough to take ~10s or more from your laptop to your PC, or vice versa).

I appreciate that originally you had a problem with the IP profile, but with that fixed, although the problem might still be on the BT side, it's also worth eliminating potential LAN-side issues from the inquiry.

sorry i don't udnerstand what you mean by lan side or -10s ?

how do I obtain this info that you request?

In reply to a post by trogoy:

sorry i don't udnerstand what you mean by lan side or -10s ?

how do I obtain this info that you request?

No problem; I descended into jargon.

LAN = Local Area Network; I'm asking about the speed that you actually achieve for data transfer between computers attached (wired or wireless) to your BT router.

10s = 10 seconds. I suggested something that takes at least ~ten seconds so that it can be measured reasonably accurately. Something that transfers in the blink of an eye may give erroneous results, depending on how you do measure it.

The aim of all this is to check whether there is a bottleneck within your internal systems and network.

The easiest way is to transfer a fairly large (say about 100-150 MByte) file between two machines via the network and time it. Some file transfer utilities (e.g., ftp) will tell you the transfer speed, but if you don't have such a thing you might have to resort to Windows file sharing and a stop watch.

Sorry, I can't help much on the details of that; I've largely managed to bypass the world of Microsoft operating systems!

With both systems wired, you should be able to obtain most of the 100-Mbit/s bandwidth of the router ports (e.g., a 100 MByte file transfer in ~8-10 seconds). Wireless on the BT business router will probably be about half that speed or a bit less.

thanks for the reply but I am going to sound even more stupid now lol.

How do I actually initiate a file transfer from 1 pc to another wirelessly. Any ideas on what file i could transfer which is over 100mb?

Incidentally the ~ sign means "approximately".

Have you ever used Windows Explorer? If not, it is in Start >> All Programs >> Accessories. That lets you see the files and folders on your computer and others on the network, but probably needs you to set up file and printer sharing and may have firewall issues to resolve.

If you get it to work, the easiest way is to have two copies of it open, as fairly small windows so you can see most of both, one looking at a file you choose to send and one looking at the place you want to receive it. Then you just drag'n'drop it from one to the other. It copies, rather than moving, as it is from one computer to another. If you do it between two places on a single computer it moves it.

Here's a file you can use (it may not be around forever):
http://dl.dropbox.com/u/50890185/128MiB.dat

It's 134217728 bytes (128 MiB) of random, incompressible (there's a challenge ) noise. Download this to one PC and try to copy it to another following RobertoS' guidance.

The data transfer rate in Mbit/s will be 1074 divided by the transfer time in seconds.
(i.e., (134217728 x 8 / 1000000) / time )