From: Xavier Dubois (xdubois@info.fundp.Ac.be)
Date: 10/20/04
From: Xavier Dubois <xdubois@info.fundp.Ac.be> Subject: tcptrace and ns2 (split a connection in 2) Date: Wed, 20 Oct 2004 17:53:04 +0200 Message-Id: <200410201753.04181.xdubois@info.fundp.ac.be>
Hello,
I'm working with the ns2 simulator and its eurane extension, and I use
tcptrace to analyze the output traces.
It seems like I discovered a (quite strange) bug in tcptrace (maybe it is a
problem in the ns2 traces I don't know but I will not argue about it...)
When we have several tcp sender in a single node in the topology, tcptrace
split the uplink and downlink of the first connection and see it as two
separate ones. Thus, it is impossible to see the RTT (for example).
It is easy to arrange it by replacing the adress of the sender of the first
packet in the traces (for example 6.0) by an other unused one in the same
node (for example 6.2 if there are two connection from the node 6)
like this (in the shell):
sed '/6\.0/s//6.2/g' sender.tr >senderok.tr
I don't know if there is another way to "repair" the traces, but there is one
that seems to work well.
If you think I'm wrong or if you know the cause of this, you can reply me! :)
Bye
-- Xavier Dubois xdubois@kom.auc.dk xdubois@info.fundp.ac.be ---------------------------------------------------------------------------- To unsubscribe, send a message with body containing "unsubscribe tcptrace" to majordomo@tcptrace.org.
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