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Date: Mon, 30 Mar 2015 21:27:26 +0200
From: Ruben Wisniewski <ruben@freifunk-nrw.de>
Message-ID: <20150330212726.46ff30c5@i3.local>
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Subject: [B.A.T.M.A.N.] batman-adv: increased default hop penalty
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Cc: Simon Wunderlich <simon@open-mesh.com>, felix@freifunk-nrw.de

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Forwarded private message, on request by Simon.

On Friday 27 March 2015 16:52:14 Ruben Wisniewski wrote:
> Hello Simon,
>=20
>=20
> we just updated our mesh, to the batman-adv-version 2014.4. Now your
> patch batman-adv: increase default hop penalty[1] is included.
>=20
> Since we got very large mesh-networks, we have some troubles with your
> patch, which makes long (needed) pathes unusable, because they TQ drop
> to lower zero.
>=20
> Else, we got some old and some new batman-adv versions, this change
> overloads the old nodes, because their TQ are better, and similiar
> links over new nodes got ignored.
>=20
> Else I see no improvement overall, because the usual urban link-wide
> is about 30-50 meteres, and we got parts of the net where we need 4-5
> hops to reach the last node. Your Patch seem to limit these pathes to
> something around 3 hops. So parts of our net are now offline, and the
> speed overall doesn't seem to be improved.
>=20
> After these experience I like to ask you, if you mind reverting this
> patch again. Else we have to work around with resetting to 15 again on
> boot, which I think is not the prefered solution.
>=20
>=20
> [1]
> http://www.open-mesh.org/projects/batman-adv/repository/revisions/7644650=
bb7
> 66bd4c7b6be5d97e6b1c3ed93a38d7
>=20
>=20
> Best regards,
>=20
>=20
> Ruben =20

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