Packet Tracer Lab: ICMP CIS 81, Cabrillo College, Rick Graziani Instructions • Take your time going through this lab, it is not a race. Do not just click through the simulation, but examine, think and discuss what is happening. You will get much more out of this lab by doing so. • What to turn in: Answer the questions below. 1. Reviewing and Starting Packet Tracer • To review or familiarize yourself with Packet Tracer, review the lab “Using Packet Tracer”. • Start Packet Tracer and Open the file: Ricks-Layer2Layer3Scenario.pkt 3. Sending the ICMP Echo (ping) a. Enter Simulation Mode b. Set the Event List to include only ARP and ICMP c. Use the Add Simple PDU tool to ping from Host C to Host D. d. Forward through the events. Notice what type of packet is being sent (ARP, ICMP ping), whether the Layer 2 destination address is a unicast or broadcast, and how each device floods or filters the Ethernet frames. e. When getting the following message, choose “View Previous Events” 1 4. Examine the ICMP Echo and Echo Reply Use the Event list to examine the information in the ICMP Echo and Echo Reply messages. Questions: 1. ICMP messages are encapsulated inside of what protocol? 2. What is the value of the IP protocol field that identifies the data as an ICMP message? 3. Is ICMP considered a layer 3 or layer 4 protocol? 4. What are the Type and Code field values of an ICMP Echo (request)? 5. What are the Type and Code field values of an ICMP Echo Reply? 6. What common application programs use ICMP Echo and Echo Reply? 2 . Packet Tracer Lab: ICMP CIS 81, Cabrillo College, Rick Graziani Instructions • Take your time going through this lab,. Reviewing and Starting Packet Tracer • To review or familiarize yourself with Packet Tracer, review the lab “Using Packet Tracer . • Start Packet Tracer and Open the file: Ricks-Layer2Layer3Scenario.pkt. an ICMP message? 3. Is ICMP considered a layer 3 or layer 4 protocol? 4. What are the Type and Code field values of an ICMP Echo (request)? 5. What are the Type and Code field values of an ICMP