Ethereal-users: Re: [Ethereal-users] Line data flow computation

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From: Guy Harris <gharris@xxxxxxxxx>
Date: Fri, 12 Nov 2004 12:21:50 -0800
Morel Olivier FRF wrote:
I have a bunch of Ethereal traces for a client/server application. Each trace in a separate file. This was very useful to understand the application behaviour. 
Now, I need to know the trafic generated on the line (in kbits) by this
application, in order to dimension the network. Is there a simple way to compute it from my Ethereal files (PCAP format) ? Alternatively, is there a rule-of-thumb to estimate it from the size of the file ?
In recent versions of Ethereal, the Summary dialog (Statistics -> Summary) shows an "Avg. bytes/sec" value. There are both "Captured" and "Displayed" columns; "Captured" includes all the traffic in the capture file, and "Displayed" includes all the traffic in the packets being displayed, so if there is traffic in the capture from other applications, you could try filtering out that traffic.