[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[ns] Fw: Help! Something strange on Diffserv]

To: <[email protected]>
Subject: [ns] Fw: Help! Something strange on Diffserv]
From: "Xiang" <[email protected]>
Date: Tue, 9 Oct 2001 15:19:27 +0800
Sender: [email protected]
Hi all,
I'm doing some simulation on Diffserv module, I wrote a TCL file to simulate
assured forward service.  I attach this file in this email. It is strange
that when I decrease the RIO's threshold of each logical queue, for example,
from
$qE1C configQ 0 0 40 60 0.02
$qE1C configQ 0 1 20 40 0.10
$qE1C configQ 0 2 10 20 0.20
to
$qE1C configQ 0 0 20 40 0.02
$qE1C configQ 0 1 10 20 0.10
$qE1C configQ 0 2  5  10 0.20
the number of droped packets also decreased! In my opinion since the
threshold(i.e. the buffersize) decrease, the number of packet droped because
of lack  of buffer space should increase instead. But the result is opposite
Could anybody explain? Or something is wrong in my simulation?
Thanks.
Xiang


begin 666 test5.tcl
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9+C!=(")F:6YI<V@B#0H-"B1N<R!R=6X-"@``
`
end
Follow-Ups:
- Re: [ns] Fw: Help! Something strange on Diffserv]
  - From: Lloyd Wood <[email protected]>
Prev by Date: [ns] wireless simulation error
Next by Date: [ns] Wireless script error
Prev by thread: [ns] Wireless script error
Next by thread: Re: [ns] Fw: Help! Something strange on Diffserv]
Index(es):
- Date
- Thread