[Martin Visser <martinvisser99@xxxxxxxxx>]

RTT is the difference in capture time of TCP frames with a certain SEQ and then corresponding followup ACK from the receiver. (Unfortunately sometime Wireshark gets this wrong particularly where later where zero length segments are involved.)

Regards, Martin

MartinVisser99@xxxxxxxxx

On Sat, Dec 5, 2009 at 2:32 AM, hne <haneugen@xxxxxxxx> wrote:

Hi,

again a question about tshark, are there fields containing the TSval and TSecr Values which are part of the Timestamp option, which could be added to the field list using
tshar -r File -T fields -e ... ?

Furthermore how does tshark calculate the value of tcp.analysis.ack_rtt?

Cheers.

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