Chaining wireless equipment

Dominic Kilbride dominic at
Wed Oct 17 13:22:14 EST 2001

Hi Joel,
The general points raised by Tony Langdon regarding channel interferance are of course very relevant. Perhaps you could complete your description with a little more information about the radio side of things ie chanels, number of cards ect.
An interesting topic that it seems you have been doing a fair bit of research into. keep it going...

On Wed, 17 Oct 2001 01:19 -0000
<joel at> wrote:

> Hi gang,
> I've been playing with different kinds of wireless equipment and have 
> come up against something that may be a wireless problem or a general 
> routing one, but hopefully someone has seen something similar!
> When I've established a link between two 802.11 devices, I usually 
> manage to transfer files between the two ends at around 300KB/s. 
> However, when I start chaining them together, the speeds drops off to 
> about 125KB for two and 50KB for three. If I test the speed between 
> two points, it's still 300KB, and spanning two of the three links is 
> still about 125KB.
> The equipment I've used has included:
>  - Apple Airport to a Linux router
>  - RG1000s with Karlbridge firmware in Turbocell mode
>  - Apple Airport to Lucent Ethernet Converter (which is a slower link, 
> but the same dropoff in speed occurs)
> At one of the nodes the devices are connected with a crossover cable 
> and at the other by a switch. I've tried replacing the switch with a 
> Linux router and this does not seem to have affected the performance 
> at all.
> Presumably a few of the people on this list who have set up community 
> networks will have chained repeater nodes in such a way - has anyone 
> noticed the same thing? Anyone not had any problems at all doing this?
> Thanks!
> Joel

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