Hi,
I have encounterd the problem with setting ShortRetryLimit_ to 0
( If you didn't do that, you might have set more nodes than me in your
simulation. ex: 20 nodes above)
However, I don't know why exactly. In my guess, It might be caused that
some nodes sent their packets
at almost the same time and collided with each other. During the time of
retransmission, more packets
are queued and dropped because of IFQ length ?
There are two methods.
a ) try to make the start time of node traffics(ex:
Application/Traffic/CBR) more different
ex: 5.123 7.238 9. 397, instead of 5 7 9
b ) open the random_ flag if you are using CBR ( for other traffic,
I've never tried )
ex: set cbr [ new Application/Traffic/CBR]
$cbr set random_ 1
In my simulation (VoIP on TKE IEEE 802.11e), it works better, hope it
helps.
minhong.
----- Original Message -----
From: "saurabh sehrawat" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Monday, April 24, 2006 5:27 AM
Subject: [ns] Problem: All packets getting dropped during simulation
whileusing TKN IEEE 802.11e code--Please help
>
> Hi,
> I am simulating IEEE 802.11e using TKN code. During simulation i have
> found that all the packets are getting dropped at the IFQ level. I don't
> know why this is happening, may be there is some problem with DTAIL queue
> used in the TKN code. Please help if someone knows the solution to this
> problem.
>
> Thanks in advance.
>
> Best regards
> Saurabh Sehrawat
>
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