Re: Jitter, packet loss and packet delay on tcpdump

["gabriele.pinzauti () witech it" <gabriele.pinzauti () witech it>]

I answered to 2 of 3 my questions.

For packet delay I have just to see how much microseconds
pass between one packet and its following. Then I have to
calculate the average value of all delays.

For jitter, I have to calculate the difference between one
packet delay and its following, and then I have to calculate
the average value of all jitters.

In this moment my only problem is how to measure packet
loss. I have to test UDP connections, and so I haven't
sequence or ack numbers.

Thanks

----- Original Message -----
Da : "gabriele.pinzauti () witech it"
<gabriele.pinzauti () witech it>
A : tcpdump-workers () lists tcpdump org
Oggetto : [tcpdump-workers] Jitter, packet loss and packet
delay on tcpdump
Data : Tue, 20 Mar 2007 10:15:03 +0100

> Hello,
> maybe you know that tcpdump has been back ported to
> OpenWrt. I need to measure jitter, packet loss and packet
> delay on my access point, but I can't use argus while it's
> not back ported. The number of applications I can use are
> very limitated, and the operation of back porting an
> application to OpenWrt is quite difficult and can be very
> time expensive.
> Anyone can give me any informations to how post-analyze
> this parameters from tcpdump logs?
> Thank you.
>
> Gabriele
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