[OpenWireless Tech] Mesh Networking

[Todd Freeman]

Preform well in what size ? while they do move the bottleneck from the
single-band to multi-band, you still have to transfer the same amount of
data, This is the difference between multi radio and single radio basically:
http://4.bp.blogspot.com/-fwXN3sV-D0w/T0QIzkAxtpI/AAAAAAAACnk/WEFRrZvtkR8/s1600/Strix_Bandwidth_Degradation.jpg

On 11/02/2012 01:31 AM, Dan Ryan wrote:
> Mesh networks can function well, just like any other network, but
> single radio setups (which are what Todd just described) are generally
> a poor idea. They have the bandwidth halving problem, and the latency
> across multiple hops can really add up. Multiradio nodes can be thrown
> together fairly cheap these days, especially since you can get a
> FreeStation 5, put OpenWRT on it, get 2 good USB radios & some
> directional antennas, and you've got a node with 4 radios & 2 Ethernet
> ports.
>
> TL;DR, Single radio mesh networks preform poorly, but Multi-radio
> nodes are now cheap & preform well.
>
> -Dan Ryan
>
>
> On Thu, Nov 1, 2012 at 11:01 PM, Todd Freeman <todd at chiwifi.net
> <mailto:todd at chiwifi.net>> wrote:
> >   Mesh networking is pointless when working with more then 5
> routers. Its
> > a fundamental part of mesh networking that limits its size, all nodes
> > must divide bandwidth almost equally among all nodes in the chain,  so
> > assuming you start out with 150mbit link, which is VERY generous.  2nd
> > hop, total throughput is 75mbit, 3rd hop, total throughput is 37mbit,
> > 4th hop, 19mbit, 5th op, 10mbit. That is 10mbit for ALL clients to
> > share, starting from 150mbit. Because each of the first 4 hops must
> > carry traffic for its own user as well as the traffic for all the users
> > down the line. Start out with your home internet and 1mbit upload, you
> > may get to 3 hops and have internet still function if you are very
> lucky.
>
> > TLDR, mesh networking do no scale at all. Its fundamental in their
> > structure, regardless of protocol.
>
>
>
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