[Olsr-dev] getting the etx value to a destination

[Henning Rogge]

Am Wed July 15 2009 14:42:13 schrieb sebastian sauer:
> Hi,
>
> Mon 13 Jul 2009 17:11, Henning Rogge wrote:
> > For olsrd tiptip (the development branch which will become the next
> > stable one) we could implement a special "ask for linkcost value"
> > command. ETX is a floating point value, so working with raw linkcost
> > might be a good idea.
>
> what do mean with "raw linkcost"? The inverse of the ETX ?
Internally OLSr use a 32 bit unsigned integer for storing the "cost" of a link 
in the topology graph. In the case of ETX they are just a multiple of the ETX 
value, for other metrics it might be something else.

To determine which route/link is better/worse, it's enough to compare this 
unsigned integers so you don't have to worry about ETX/linkcost 
representation.

Henning

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