Ad-hoc Networking

Holger Levsen holger at layer-acht.org
Fri Apr 25 13:44:59 EDT 2008


Hi,

On Thursday 24 April 2008 01:27, John Gilmore wrote:
> In ad-hoc mode, there is no forwarding of packets.  It isn't a mesh.
> It's just point-to-point communication between two radios, without any
> intermediaries. 

While this is true, it's also incomplete :-) Adhoc mode is not limited to two 
devices and olsr and b.a.t.m.a.n. are two layer-4 mesh routing protocols 
which (usually/often) both use 802.11 in adhoc mode. 

But unlike 802.11s as provided by the marvell chip in the XO this needs cpu...

> This mode works in every 802.11 chip set. 

In theory. In practice, many bugs where found in almost all chipsets and 
drivers in adhoc mode, simple because adhoc mode is not as widely used and 
thus tested as managed mode.


regards,
	Holger
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