As part of a broader organisational restructure, data networking research at Swinburne University of Technology has moved from the Centre for Advanced Internet Architecture (CAIA) to the Internet For Things (I4T) Research Lab.

Although CAIA no longer exists, this website reflects CAIA's activities and outputs between March 2002 and February 2017, and is being maintained as a service to the broader data networking research community.


This page is part of the GENIUS project.

Single Idle Web Camera Traffic Results

The following graphs represent the inter-packet arrival times and packet lengths for Connection A, with no movement in front of the camera. Web Camera 2 was not transmitting during this test.

Inter-packet Arrival Results


Figure 2.1

Figure 2.2

Figure 2.3

Figure 2.4

We can see from the graphs above that the majority of packets from Computer 2 to Computer 1 and vice versa had an inter-packet arrival time of 201ms. As seen in Figures 2.1 and 2.2, more than 67% of packets arrived at Computer 1, the computer with the web camera, with an inter-packet arrival time of 201ms. Just over 8% of packets had an inter-arrival time time of 0ms. This means that their inter-packet arrival time was between 1usec and 249usec.

Just over 46% of packets arrived at Computer 2 from Computer 1 with the 201ms inter-packet arrival time and a further 12% with a 201.25ms inter-packet arrival time, as seen in Figures 2.3 and 2.4. Almost 18% of packets were recorded to have an inter-packet arrival time of between 1usec and 249usec.

In Figure 2.1 over 12% of packets had an inter-arrival time of between 1usec and 1ms compared to over 21% in Figure 2.3. Very minor peaks occured between 0 and 201ms plus, contributing to the gradual positive slopes seen on the cumulative graphs in Figures 2.2 and 2.4.



Packet Length Results

As can be seen in Figures 2.5 to 2.8 below, there was not a large amount of traffic generated from Computer 2 to Computer 1 that was inside the Pkthisto configuration parameters.


Figure 2.5

Figure 2.6

Figure 2.5 shows the packet length histogram produced by the traffic from the receiving machine, Computer 2, to Computer 1, the machine to which the web camera was attached and recording. Figure 2.6 shows the corresponding cumulative graph. We can see from these graphs that just under 90% of packets were 46 byte ACKs, with just over 10% of packets being 52 bytes long.


Figure 2.7

Figure 2.8

Figures 2.7 and 2.8 show that there was a larger variety of packet sizes from Computer 1 to Computer 2, the direction of the video stream. The largest peak of 856 bytes occured for 48% of the packets captured. The next highest peaks were at 1500 bytes corresponding to over 19% of the packets, 584 bytes corresponding to over 5% of the packets, 64 bytes corresponding to over 4% of the packets and 1128 bytes accounting for just under 4% of all packets.





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