[Babel-users] ETX metric for bandwidth limited links

Juliusz Chroboczek Juliusz.Chroboczek at pps.jussieu.fr
Thu May 20 16:34:42 UTC 2010

> ETX does not take into account the physical characteristics of a path.
> It relies on a statistic made at the IP layer counting the number of
> packet loss.
> It does not make any distinction on whether the link is a gigabit one or a 56k.
> Correct me if I am wrong.

You are absolutely right.  ETX is an estimate of the number of times
a 802.11 frame will be resent, assuming infinite persistency of the link


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