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Homework answers / question archive / CMIT 350 Week 2 Discussion Dissecting Switching Protocols in Wireshark Download and install Wireshark

CMIT 350 Week 2 Discussion Dissecting Switching Protocols in Wireshark Download and install Wireshark

Computer Science

CMIT 350 Week 2 Discussion

Dissecting Switching Protocols in Wireshark

Download and install Wireshark. Alternatively, you may use https://www.cloudshark.org/ (you may need to create an account).

Open up the Switches packet capture (.pcap) file. Compare and contrast the SWITCH, ARP, and VLAN protocols seen in the .pcap.

  • What does ARP primarily do on the network? How is this related to switches?
  • What are some of the VLAN ID’s found in the .pcap?
  • Examine the STP traffic. What are some of the priorities associated with the root bridges?
  • What packet number did you find that information in?

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What does ARP primarily do on the network? How is this related to switches?  

ARP finds the MAC address of a host from its known IP address. ARP maintains a table in which MAC addresses are mapped to IP addresses. Switches store the ARP tables.

What are some of the VLAN ID’s found in the .pcap?

  • VLAN ID 5 (Packet 37)
  • VLAN ID 6 (Packet 117)
  • VLAN ID 7 (Packet 679)
  • VLAN ID 10 (Packet 170)
  • VLAN ID 17 (Packet 492)
  • VLAN ID 20 (Packet 155)
  • VLAN ID 32 (Packet 52)
  • VLAN ID 104 (Packet 131) 
  • VLAN ID 108 (Packet 153)
  • VLAN ID 112 (Packet 659)

Examine the STP traffic. What are some of the priorities associated with the root bridges?

32768(Default)(Packet 675) and 8192(Packet 679).

What packet number did you find that information in?

The packet numbers are listed above.

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