Lab 4A

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Lab 4: Capturing packets on your network
Name: Jaimin SurtiAssignment: Lab 4
Course: ECET-415
Date Submitted: October 27, 2014
Submitted to: Professor Khader
Table of Contents
Deliverable 1…………………………………………………………………………………. 2
Deliverable 1…………………………………………………………………………………. 3
Deliverable 2…………………………………………………………………………………. 4
Deliverable 3…………………………………………………………………………………. 4
List of Figures
Figure 1……………………………………………………………………………………….2
Figure 2……………………………………………………………………………………….2
Figure 3……………………………………………………………………………………….2
Figure 4……………………………………………………………………………………….3
Figure 5……………………………………………………………………………………….3
Figure 6……………………………………………………………………………………….3
Figure 7……………………………………………………………………………………….4
Deliverable 1 - A PDU (Protocol Data Unit) is an important term related to the initial four layers of the OSI model. In Layer 2 it contains the frame, in layer 3 it contains a packet, and in layer 4 it is a segment. Layer 5 contains the data. The PDU has four field’s destination access point, source service point, control field and information field. The source where Wireshark retrieved the data from was www.cnn.com
List the layer 2, 3, 4, and 5 PDUs that are used in your network to send a request to get a Web page.
The HTTP Get Packet sends a request to get a Web page.
Figure 1- Is a base for all protocols it shows information from capturing
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Layer 2 - [Frame] – This piece of data captured from Wireshark is called a Frame it contains 339 bytes of data that was captured when inspecting a website. The frame protocol is not a real protocol. This type of protocol is used by Wireshark as a base for all protocols. The Ethernet II frame is 38 bytes of overhead data. Figure 2
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51435013271500The Ethernet Frame is a unit of packets that is formatted into information that consists of 6 different packets on a 38 byte overhead.
Preamble (7 bytes) & Delimiter (1 byte)
Destination