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Date: Tue, 20 Nov 2012 10:24:21 +0100
From: Antonio Quartulli <ordex@autistici.org>
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Subject: Re: [B.A.T.M.A.N.] batman over 802.15.4 .
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Cc: Randy Graham <surfbytes@gmail.com>


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On Tue, Nov 20, 2012 at 09:27:39AM +0100, Sven Eckelmann wrote:
> On Monday 19 November 2012 20:25:34 Randy Graham wrote:
> [...]
> > 1. Will batman-adv work over 802.15.4 ?
> [...]
> > 2. Can batman-adv work with either of these interfaces ?
> >=20
> > I tried configuring these interfaces using 'batctl' but it complains
> > that they are an unsupported type.
> > 'iwconfig' reports these interfaces as having 'no wireless extensions'
> > which I suspect is the issue.
>=20
> No, batman-adv works on 802.3 compatible interfaces (aka ARPHRD_ETHER) wh=
ich=20
> provide special mac behaviour. This has nothing to do with the wireless=
=20
> extensions (which are deprecated anyway).
>=20
> > Please let me know if running b.a.t.m.a.n. over 802.15.4 is feasible.
>=20
> 802.15.4 has the type ARPHRD_IEEE802154 for its fake hard interfaces. So =
you=20
> need an "ethernet emulation" layer on top of it to use it with batman-adv=
=2E I=20
> don't know whether the mac layer works well enough in theory to be used w=
ith=20
> batman-adv.


And other than these technical details, I would say that batman-adv is not a
very good protocol for 802.15.4/low-power wireless. It might need heavy
restructuring if you really want to use it in a deployment.

However, I'm pretty familiar with 802.15.4, therefore if you really want to=
 go
ahead, we can even discuss further what batman-adv would need and what would
not.

Regards,


--=20
Antonio Quartulli

=2E.each of us alone is worth nothing..
Ernesto "Che" Guevara

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