Ok, I'll be a bit more specific.

The 4 remote stations have Aironet 4800 PCI cards operating 30mW with
directional antennae. The AP is a BR340 30mW with omni antenna. The link
speed is 11Mb/s. (The remote distances vary from 2.5 - 5Km, clear line of
sight)
I've transferred files of different sizes from each remote station and noted
the avg. throughput.
These tests where done separately(one at a time). So I've hoped to get some
idea of the transfer rates, should there be only one active remote station.

Now, the result was about 200KB/s. It is to my knowledge about 1.6Mb/s.

What I want to know is, is this right, or should(could) it be faster?

   1. What is the expected throughput b'tween PCI 4800 clients and BR340
(Kallie Kemp)

Message: 1
From: "Kallie Kemp" <kalliekm-tec.co.za>
To: <aironetenkidu.cse.ucsc.edu>
Date: Mon, 26 Nov 2001 07:45:25 +0200
Subject: [Aironet] What is the expected throughput b'tween PCI 4800 clients
and BR340

We've set up 4 remote stations connecting to a BR340 base. The distances
from client to base vary from 2.5 to 5 Km.
After doing some simple tests of file transfers of various sizes, I've found
that the avg. throughput overall is about
200 Kbytes/s.

Is this about right, or should it faster?

Kind Regards,
Karl

Reply-To: <epluckneteam.com>
From: "Ed Pluck" <epluckneteam.com>
To: <aironetenkidu.cse.ucsc.edu>
Subject: RE: [Aironet] What is the expected throughput b'tween PCI 4800
clients and BR340
Date: Mon, 26 Nov 2001 09:13:32 -0500

Kallie,
  Speed is a fun topic, the issues you are looking at are as follows.

Link Speeds: These are the published speeds you always see, just like with
wired ethernet you will never see these values. You can expect to get 60% of
the link speed in real bandwidth. What Link speeds are your links set for?

Multiple Nodes: So lets say you have 11Mbps set as your Link speed. This
would
mean that you have about a 6 or 7 Mbps pipe now you need to divide that
equally between the nodes on the wireless network. This is partially due to
the fact that all 802.11 products are Half-Duplex, and all the nodes are
sharing the physical media. So if they all shared equally then you are
talking around 1.5Mbps per device.

The configuration of your IP stack can also slow you down, some Windows OS
in example have a defualt packet size of 512 which would cause more
fragments to be sent in transfering your file.

-----Original Message-----
From: aironet-admincsl.cse.ucsc.edu
[mailto:aironet-admincsl.cse.ucsc.edu]On Behalf Of Kallie Kemp
Sent: Monday, November 26, 2001 12:45 AM
To: aironetenkidu.cse.ucsc.edu
Subject: [Aironet] What is the expected throughput b'tween PCI 4800
clients and BR340

We've set up 4 remote stations connecting to a BR340 base. The distances
from client to base vary from 2.5 to 5 Km.
After doing some simple tests of file transfers of various sizes, I've found
that the avg. throughput overall is about
200 Kbytes/s.

Is this about right, or should it faster?

Kind Regards,
Karl

_______________________________________________
Aironet mailing list - Aironetcsl.cse.ucsc.edu
http://csl.cse.ucsc.edu/mailman/listinfo/aironet

--__--__--

_______________________________________________
Aironet mailing list - Aironetcsl.cse.ucsc.edu
http://csl.cse.ucsc.edu/mailman/listinfo/aironet

End of Aironet Digest

_______________________________________________
Aironet mailing list - Aironetcsl.cse.ucsc.edu
http://csl.cse.ucsc.edu/mailman/listinfo/aironet

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]