Network Analysis

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In order to determine the flow and types of packets on the network, a packets sniffer program ‘Wireshark’ was used to capture the packets. Wireshark was used to capture 30 minutes of network activity in two different intervals, morning and afternoon.

The partial output from the Wireshark capture, from both sessions is shown in figure 4.4; from analysis of the packet sniffer program it can be deduced that the network traffic usage is mainly TCP connections, such as web browsing, file transfer and mail services.

It can also be noted that there is a significant amount of the broadcast packets like ARP, NBNS and UDP, as shown in figure 4.6 a partial segment of the Wireshark output and due to these packets the switches should experience a vast number of broadcasts, which in general degrades the entire network performance.

The graph as depicted in figure 4.7 represents the amount of packets that where captured for a given time period, which show there is a significant amount of broadcast in the network.

4.2.3 NETWORK STATISTICS

In order to get some real time statistics, capturing t...

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