3-4-1-2UsingWiresharkToViewNetworkTraffic.docx - Lab Using Wireshark to View Network Traffic Topology Objectives Part 1 Capture and Analyze Local ICMP

3-4-1-2UsingWiresharkToViewNetworkTraffic.docx - Lab Using...

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Lab - Using Wireshark to View Network Traffic Topology Objectives Part 1: Capture and Analyze Local ICMP Data in Wireshark Part 2: Capture and Analyze Remote ICMP Data in Wireshark Background / Scenario Wireshark is a software protocol analyzer, or "packet sniffer" application, used for network troubleshooting, analysis, software and protocol development, and education. As data streams travel back and forth over the network, the sniffer "captures" each protocol data unit (PDU) and can decode and analyze its content according to the appropriate RFC or other specifications. Wireshark is a useful tool for anyone working with networks and can be used with most labs in the CCNA courses for data analysis and troubleshooting. In this lab, you will use Wireshark to capture ICMP data packet IP addresses and Ethernet frame MAC addresses. Required Resources 1 PC (Windows 7 or 8 with Internet access) Additional PC(s) on a local-area network (LAN) will be used to reply to ping requests. Part 1: Capture and Analyze Local ICMP Data in Wireshark In Part 1 of this lab, you will ping another PC on the LAN and capture ICMP requests and replies in Wireshark. You will also look inside the frames captured for specific information. This analysis should help to clarify how packet headers are used to transport data to their destination. © 2018 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public. Page 1 of 16
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Lab - Using Wireshark to View Network Trafficpingppp Step 1: Retrieve your PC’s interface addresses. For this lab, you will need to retrieve your PC’s IP address and its network interface card (NIC) physical address, also called the MAC address. a. Open a command window, type ipconfig /all , and then press Enter. b. Note your PC interface’s IP address and MAC (physical) address. c. Ask a team member for their PC’s IP address and provide your PC’s IP address to them. Do not provide them with your MAC address at this time. Step 2: Start Wireshark and begin capturing data. a. On your PC, click the Windows Start button to see Wireshark listed as one of the programs on the pop-up menu. Double-click Wireshark . b. After Wireshark starts, click Interface List . © 2018 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public. Page 2 of 16
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Lab - Using Wireshark to View Network Trafficpingppp Note : Clicking the first interface icon in the row of icons also opens the Interface List. c. On the Wireshark: Capture Interfaces window, click the check box next to the interface connected to your LAN. Note : If multiple interfaces are listed and you are unsure which interface to check, click the Details button, and then click the 802.3 (Ethernet) tab. Verify that the MAC address matches what you noted in Step 1b. Close the Interface Details window after verifying the correct interface.
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  • Spring '08
  • NAKHAEI
  • IP address, MAC address

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