[Olsr-users] Link Quality Fields

[Henning Rogge]

Am Tuesday 03 February 2009 08:25:05 schrieb Bhat, Ishwara:
> For OLSR's LQ, how many Hello packets are considered for link quality
> calculation ?
Depends on the LQ algorithm you use.

etx_float and etx_fpm use an exponential moving average, so they consider an 
"infinite amount of hellos".
etx_ff considers all OLSR packages (not only hellos) within the last 16 
seconds.

> In windows build of OLSRd  (0.5.5) I saw that 'LinkQualityWinSize' is a
> configuration parameter regarding this. In linux 0.5.6-r2, I did not
> find anything similar.
Yes, window size is gone... it's no longer usable because we changed the LQ 
algorithm.

> However I found - LinkQualityAging in linux olsrd.conf.  How exactly is
> this used ?
LQaging is the aging parameter of the exp. moving average for etx_fpm and 
etx_float.

(the next version of OLSR will move all LQ algorithms into real plugins, so 
each of them can have parameters of it's own).

etx_ff does not have any parameters.

> Is there any other field which influence LQ/NLQ and ETX ?
There is the "lq multiplier" parameter, but most times you should keep it on 
"1".

Henning

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