Getting information through TCP stream graphs – round-trip-time window

The round-trip-time windows of the TCP stream graphs enable us to look at the round trip between sequence numbers and the time they were acknowledged. Along with the other graphs, it provides us with a look at the performance of the connection.

Getting ready

Open an existing capture, or start a new capture. Click on a specific packet in the capture file. Even though you can use this feature on a running capture, it is not meant for online statistics, so it is recommended that you start a capture, stop it, and then use this tool.

In the following example, we use the CAP_1674_06_13file forTCP stream number 8, which is the TCP connection that starts in packet 85.

How to do it...

For viewing TCP stream graph statistics, go through the following steps:

1. Click on a packet on the stream you want to monitor.
2. From the Statistics menu, choose TCP Stream Graph| Round Trip Time Graph.

3. The following window will be opened:

4. In the graph, we can...