TAILIEUCHUNG - 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: | 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 3. Sending the ICMP Echo ping a. Enter Simulation Mode b. Set the Event List to include only ARP and ICMP I-Event List Filters------------------------ 17 ARP F COP F DHCP F EIGRP 17 ICMP F RIP F TCP F HOP F All None 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. Capture Forward J F __ _ __ 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. I-Event List----------------------------------------- PDU Info at Device A 1 Time s 1 Last Device 1 At Device Type Info Switch 1 E_DNS_Server ARP Switcho A ARP Hubo c ARP Hubo D ARP -- A ICMP N n nrm Ù cjiAiitrhn ICMP id OSI Model I Outbound PDU Details I -PDU Formats--------------------------------------------------------------- Ethernet II 0__48__1419 Bytes PREAMBLE 1010 1010 DE ST MAC SRC MAC TYPE 0x800 DATA VARIABLE LENGTH FCS 0x0 IP 0 4 8 16 19 31 Bits 4 1 IHL 1 TOS 0x0 TL 0x0 ID 0x0 0x01 FRAG OFFSET 0x0 TTL 32 1 PRO 0x1 CHKSUM 0x0 SRC IP DST IP OPT 0x0 1 0x0 DATA VARIABLE

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