[ns] Packets drop at the source

[Nicolas.Compas at gerad.ca]

Hi,
I run a simple 2 nodes simulation with a UDP agent and a CBR traffic
source.  I'm using the Shadowing model and in the trace file all the drop
(D) appear at node 0 (sender). Like:

D 43.320025000 _0_ IFQ --- 7874 cbr 520 [0 1 0 800] ------- [0:0 1:0 32 1]
[7864] 0 0

I run many simulations. I change only the transmit power to see the % of
loss according to the transmit power. The loss changes but all packets are
dropped at the source.

Nic



> What do you exactly mean by 'packet drop at the source'? Do you
> explicitly see the dropped packet in the output trace file?
>
> If you're running an application on top of TCP, the TCP's receiver
> window size will affect the congestion window size at the sender which
> may prevent to send out more packets even though a plenty of bandwidth
> is available.
>
> SH-
>
> On 6/15/05, Nicolas.Compas at gerad.ca <Nicolas.Compas at gerad.ca> wrote:
>>
>> Hi,
>>
>> I run many wireless simulations and I realised that packets was drop at
>> the source and never at the destination. Why?
>>
>> Thank for help
>> Nic
>>
>>
>