Test 3: iperf3 running longer than 5-minutes
In this test3, I would like to run a single iperf3 for, say, 12 minutes. The reason is this flow will spread across multiple 5-minutes interval. The expectation is the flow will be like “chopped” to multiple 5 minutes flow data. Let’s see.
The iperf3 command being used is:
/usr/local/bin/iperf3 -c 10.230.1.230 -w 128k -b 2M -t 720The iperf3 client screen capture:
While the iperf3 is running, packet capture was done on the iperf client machine (10.2.1.111). The following is the conversation of the packet capture during test3:
From the packet capture, there are 2 flows as follow:
10.2.1.111:38682 <—> 10.230.1.230:5201 (iperf3 control connection)
10.2.1.111:38694 <—> 10.230.1.230:5201
Let’s check the “Flows” tab (flow visibility) for Left-Spoke-1:
From the packet capture the two iperf3 flows start at 09:43:57am and end at 09:55:57am. This 12 minutes duration cross the follow four 5-minutes interval (the flow 5-minutes interval):
- 09:39:58am to 09:33:58am
- 09:44:58am to 09:49:59am
- 09:49:59am to 09:54:59am
- 09:54:59am to 09:59:59am
That’s why from the “Flows” tab, the two flows actually generate 8 rows of data (spread across 4 interval and there are 2 WAN links, so 4×2 = 8).