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Old 01-25-2010, 11:00 PM   #1
Registered: Aug 2008
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Analyze packet size, AdvertizedWindowSize

I am running tcpdump and using wireshark to analyze the packets. How do I look at the packet size and the AdvertizedWindowSize from the receiver? Do I need to set some options. When I open the file in wireshark I don't see those details.

I am seeing slow transfers and lots of Duplicate Acks so I am trying to see the reason for it. Any suggestions?
Old 01-25-2010, 11:33 PM   #2
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Distribution: OpenSuse 11.1, Fedora 14, Ubuntu 12.04/12.10, FreeBSD 9.0
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From somewhere in internet. It is not mine. Sorry.

23:00:38.371059 IP > P 13468:14292(824) ack 96
win 33304 <nop,nop,timestamp 246782562 2080639302>
23:00:38.373003 IP > . ack 14292 win 65535
<nop,nop,timestamp 2080639302 246782562>

The "win" indicates the advertised window. So is advertising a
window of 33304 bytes
and is advertising a window of 65535 bytes.
Old 01-26-2010, 12:54 AM   #3
Registered: Aug 2008
Posts: 60

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Thanks. How do I see the size of the packet?

Is there a place that explains the complete tcpdump output?


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