On Mon, 2006-08-14 at 23:54 +0100, Pedro Fortuna wrote: > I'll do my best trying to find the problem. I'll submit a patch if I > succeed correcting it (assuming there's a problem). > > There is a question on the DCF implementation part I'd like to ask if > you don't mind. It seems that there's no Packet Loss. I know 802.11 > DCF MAC's is an acknowledged service with up to 7 retransmissions, > which eliminates almost every packet loss due to transmission errors. > But shouldn't it at least have some packet loss due to limited queue > sizes? > > I have done a simulation where I create 200 nodes exchanging 400 voip > flows and although the maximum delay is a lot higher when compared > with a 20 or 50 node simulation, it still does not show any packet > loss. This suggests that in your implementation you have a very long > queue (or infinite size). Is this true? If so, In your opinion, would > it be complicated to implement a limited queue size?
I cannot remember if the queue is size-bound or delay-bound. My curent code (in yans) is both size and delay bound with a default size of 400 packets. The relevant code is located in mac-queue-80211.cc. Mathieu
