time difference between two packets in wireshark

Question

I want to calculate the time difference between the time from sending the packet, to getting its ACK back. I do not see any timestamp related information in the packet, could anyone give me any pointers as to how I can compute the difference.

Answer 1

In Wireshark Preferences / Appearance / Columns you can add a new column of type Delta time. With this new column and wise capture filtering you should be able to do what you want.

Answer 2

1. Apply a filter, so that you only see the frames you are interested in
2. Right click on column title bar and choose "Column Preferences..."
3. Click on "Add" (give the column a reasonable name)
4. Change field type to "Custom"
5. Type "frame.time_delta_displayed" in "Field name" without "