Exploring Broadcast Domains - eamonstackpole/my-tech-journal GitHub Wiki

Summary

  • In this lab we continue to explore Layer 2 (Data Link) connections within and to outside the LAN.

Commands & Instructions

  • N/A

Problems & Troubleshooting

  • Only issue we had was someone misread their MAC address so we were confused at first but this was fixed very quickly.

Questions

  • Deliverable 1: Analyze the ICMP Response from Google:
    • Answer: What is the source MAC address? What is the destination MAC address? (Hint: Data Link Layer Header)

Screenshot 2023-02-06 151615

    • Answer: Does the source MAC address look familiar from prior labs? Do you think it is the Google Server's MAC address?
      • The source MAC address is the same as the default gateway, so I don’t think it's Google's MAC address.

  • Deliverable2: What are the source and destination MACs in the ping reply

Screenshot 2023-02-06 151741

  • What is your partner's MAC address?

    • My partner's MAC address is 00-0C-29-D0-7A-1B

  • Deliverable3: Does the MAC address match the address from your traffic capture? If not - what do you think happened?

      • It does match the mac address from the traffic capture.

  • **Deliverable4: **

    • On your workstation, what is the source and destination MACs from the pings?

Screenshot 2023-02-06 152909

    • On your partner's workstation, what is the source and destination MACs from the pings?
      • Source: 00:0C:28:43:F7:8E
      • Destination: 00:0C:29:88:B1:2E

  • Deliverable5: Why do you think they are different?

    • The source MAC address is different because my partner is most likely seeing the switch’s mac address, as it is broadcasting the request to the devices on the LAN.