rel wrote:
> Hi there,
>
> a company has just setup a wireless connection for us. The setup is as following:
>
> The distance between objects is 1.5km, there is one building between the two buidlings that is 5 meters higher:
>
> Object "A" a "Redline AN-50", whitch operates on 5.4Ghz, 36Mb/s and setup as accesspoint.
> Object "B1" a Redline (same device) but setup as a repeater.
> Object "B2" a Cisco Aironet 350, 2.4Ghz. 11Mb/s setup as repeater.
> Object "C" the same Aironet setup as AP.
>
> The ping results are good, 9ms peeks to 32ms. But when testing the speed by copying a large file from a fileserver, the download started at 30KB/s and then dropped to 8KB/s.
> Avarages at 12KB/s
>
> Could there be a misconfiguration of the hardware, or what can
> be the problem here. If someone can hint me, please.

Those Redline products (really nice, by the way) are supposed to support
up to 48Mbs sustained throughput. Somebody definitely screwed the pooch
on that project. I can't imagine the reasoning of having a Cisco 802.11b
(about 5-7 Mbs sustained) in the chain. If you're going to spend the
money for two Redlines, you lose the benefit by using a Cisco in the
chain. You could contact Redline directly for assistance, but I think
the company that did this for you has some 'splainin to do. As for
what's actually wrong, do you know the link quality and signal strength
for these links? Is there a lot of RF noise in your area?

Setting a single device up as a repeater halves the throughput. But the
Redline is so much faster than the Cisco, you only have to think about
the Cisco. It's data rate may be getting cut in half. Unless you mean
that the Redline and Cisco are piggy-backed on the building in the
middle and work together as a repeater, in that case, they're not cut in
half but have full bandwidth.