[ns] Bad DSR performance due to packet drop at IFQ

[Fabian Wolff]

Hi,

I started simulating AODV, DSDV and DSR with some basic "dumb" scenarios 
using ns-2.29 (namely 200 nodes, high mobility, 2000x2000, 10 tcp 
connections at the same time, simulation time 360s) just to get a 
feeling for some first results.
When using DSR I realized that the amount of transmitted packets is 
around 8-10 times less than compared to AODV (the ratio of delivered 
packets "received/sent" is pretty similar). Analysis of the trace file 
showed that there seem to be some problems with the IFQ/MAC (802.11) as 
most packets are getting dropped here. Looking at the 
mailling-lists-archive showed that this problem seems to be known. I am 
not sure whether I missed some threads, but I couldn't find a suitable 
solution for this problem, yet.
Can you please help and tell me which modifications I need to do to 
solve this problem?

best regards,
Fabian