WDS mesh and dual vs single radio

Hi,

I could imagine some degradation may occur when a single radio AP is
meshed. Would a dual radio AP sustain a higher bandwidth as one radio
is meshed and the other is accessed by clients?
If so, could a recommendation be made for a dual radio AP?

regards,
Jeff

On 28 Nov 2006 16:32:11 -0800, (E-Mail Removed) wrote in
<(E-Mail Removed) .com>:

>I could imagine some degradation may occur when a single radio AP is
>meshed. Would a dual radio AP sustain a higher bandwidth as one radio
>is meshed and the other is accessed by clients?
>If so, could a recommendation be made for a dual radio AP?

For two radios with minimum interference, cable a wireless Ethernet
(client) bridge to a wireless access point on a different
non-overlapping channel (using the same SSID).

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On 28 Nov 2006 16:32:11 -0800, (E-Mail Removed) wrote:

>I could imagine some degradation may occur when a single radio AP is
>meshed.

No imagination required. Store and forward is slow, wasteful,
inefficient, disgusting, but cheap.

>Would a dual radio AP sustain a higher bandwidth as one radio
>is meshed and the other is accessed by clients?

Yes. Some of the mesh wireless network vendors offer dual radios.
See:
<http://www.belairnetworks.com/resources/pdfs/Mesh%5FCapacity%5FBDMC00040%2DC01%2Epdf>

Note that Belair offers a dual band solution, where the 2nd radio is
on 5.8GHz.
<http://www.belairnetworks.com/resources/pdfs/BelAir100C%5FData%5FBDMA10040%2DB01%2Epdf>

The leader is currently Tropos which finally produced a similar dual
radio, dual band product:
<http://www.tropos.com/products/pdf/5320_datasheet.pdf>

If you want to jump in with both feet, I suggest you first read the
research papers from MIT Roofnet mesh network to see how a working
mesh network scales and acts. There were quite a few suprises for me.

Summary report:
<http://pdos.csail.mit.edu/roofnet/doku.php?id=interesting>

Sources and details:
<http://pdos.csail.mit.edu/roofnet/doku.php?id=publications>

>If so, could a recommendation be made for a dual radio AP?

No, I can't. I try not to make recommendations without knowing what
you're trying to accomplish, what you have to work with, and what
environment you're trying to deploy it. I also like to recommend
stuff that I've played with. So far, I've only tinkered with Wi-Fi
mesh and don't like any of the systems that I've seen. Mesh networks
are not a universal solution to all problems and do not really replace
the backhaul.


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