[B.A.T.M.A.N.] batman-adv route selection parameters

[B.A.T.M.A.N.] batman-adv route selection parameters

[Harms, Hannes]

Hi community,

consider the following wireless network:

A <-- 60Mbit --> B <-- 60Mbit --> C
A < ----------5Mbit-------------------> C

Node A can talk to Node C via Node B
Node A can talk to C directly, but with a significant lower throughput.
All links have a  relative low package loss.

I run into the problem that batman-adv sometimes routes traffic directly 
from Node A to C.
with gives me 5 Mbit throughput, and sometimes route A-B-C is chosen, 
resulting in 25 Mbit throughput.

I have adjusted the originator interval to 200 ms, and the hop penalty 
to 1 without significant improvements.

Are the other ways to force batman-adv to chose route A-B-C ?

Thanks,
Hannes

-- 
Dipl.-Ing. Hannes Harms
Technische Universität Braunschweig
Institut für mobile Maschinen und Nutzfahrzeuge
Langer Kamp 19a
D-38106 Braunschweig

Durchwahl: +49 (0)531 391-7197
E-Mail:  hannes.harms@tu-braunschweig.de
http://www.tu-braunschweig.de/imn

Re: [B.A.T.M.A.N.] batman-adv route selection parameters

[Sven Eckelmann]

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On Donnerstag, 20. April 2017 16:10:02 CEST Harms, Hannes wrote:
[..]
> I run into the problem that batman-adv sometimes routes traffic directly 
> from Node A to C.
> with gives me 5 Mbit throughput, and sometimes route A-B-C is chosen, 
> resulting in 25 Mbit throughput.
> 
> I have adjusted the originator interval to 200 ms, and the hop penalty 
> to 1 without significant improvements.

Set your multicast rate to something meaningful. Usually 1mbit is used - which 
is too low to make any sense when comparing the mcast packet loss with the 
packet loss of the higher unicast rates. Maybe you can test something like 24 
Mbit/s.

> Are the other ways to force batman-adv to chose route A-B-C ?

Maybe you are interested in B.A.T.M.A.N. V which actually uses throughput 
information and not packet loss.

Kind regards,
	Sven

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