[Olsr-users] Two Questions: Dot Draw Plugin and ETX

[David Murray]

Hi,

I have a couple of questions, I hope no one minds me asking two at once.

Firstly, I am playing around with the dot draw plugin at the moment. 
Does this plugin simply output the routing table in a format that can 
be drawn by the dot program? I am not complaining, It seems to work 
really well, but I think that if you are outputting the routing table 
from the perspective of one node then you are not getting the entire 
topology. It seems to me that you will only get the best path to each 
node in the network from the perspective of one node. Is this correct?

Another question I have is about the use of ETX (Expected Transmission 
Count). Since the work that introduced ETX 
(http://pdos.csail.mit.edu/papers/grid:mobicom03/paper.pdf) there have 
been improvements proposed such as ETT (Expected Transmission Time). 
This seems to improve ETX by adding the ability to measure bandwidth 
(described http://research.microsoft.com/mesh/papers/multiradio.pdf). 
Surely the ability to inculde bandwidth into the metric would be a good 
addition. Is there any reason why ETX has not been adopted by OLSR? Do 
people not want the added complexity or are there technical reasons why 
it wouldn't work.

Thanks

Dave