5.3.2.8 Packet Tracer - Examine the ARP Table

Packet Tracer - Examine the ARP TableTopology Parth Patel © 2016 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public. Page 1 of 6 4706.16. 3 Wireless F0 F0/2 DA7 F0/1 0060. You will gather PDU information in simulation mode and answer a series of questions about the data you collect.2F84.16. The devices are already configured. 2 0060. This document is Cisco Public.F7B1.16.10.8 G0 D75 F0/3 Objectives Part 1: Examine an ARP Request Part 2: Examine a Switch MAC Address Table Part 3: Examine the ARP Process in Remote Communications Background This activity is optimized for viewing PDUs.85CC.2 Router0 Gg0/0 501 G0/1 S0/0/0 N/A N/A 00E0.2 AB6 849 F0/2 0002.5 172.31 .10.4 72B 000C. All rights reserved.Examine the ARP Table Addressing Table Interfa MAC Switch ce Address Interface Device 0001.4 Wireless 10.31 .1 172.7036. Page 2 of 6 . © 2016 Cisco and/or its affiliates.Packet Tracer .3 F0/2 0060.10.2 F0 172.1640.8 Router1 G0/0 901 G0/1 S0/0/0 N/A N/A 10.6458.31 .10. 31. Is this address listed in the table above? No e.31.16.31. Click Capture/Forward until the PDU returns to 172. Click 172.Examine the ARP Table Part 1: Examine an ARP Request Step 1: Generate ARP requests by pinging 172. Enter Simulation mode and enter the command ping 172. c.16. What happened to the source and destination MAC addresses? Source became destination. The ARP PDU moves Switch1 while the ICMP PDU disappears. Open the PDU and examine Layer 2.2. Open the PDU and record the destination MAC address. Click Capture/Forward to move the PDU to the next device.16. Enter the arp -d command to clear the ARP table. Open the PDU and examine the MAC addresses. Note that the ICMP packet reappears. waiting for the ARP reply.3 g. FFFF.3 h. How many copies of the PDU did Switch1 make? 3 f. How many copies of the PDU did the switch make during the ARP reply? 1 Step 2: Examine the ARP table. What is the IP address of the device that accepted the PDU? 172. Switch back to Realtime and the ping completes. This document is Cisco Public.31. Do the MAC addresses of the source and destination align with their IP addresses? Yes j. b. © 2016 Cisco and/or its affiliates. d.3 from 172.31.2.16. Two PDUs will be generated. All rights reserved. So the computer sends an ARP broadcast frame to find the MAC address of the destination.FFFF turned into MAC address of 172. i.16.2 and open the Command Prompt.Packet Tracer .31.16. Click Capture/Forward once. Page 3 of 6 . The ping command cannot complete the ICMP packet without knowing the MAC address of the destination. a.31.FFFF.16.3. t.31. How many replies were sent and received? 4 sent.16. This document is Cisco Public. Part 2: Examine a Switch MAC Address Table Step 1: Generate additional traffic to populate the switch MAC address table. Type arp –a. when does an end device issue an ARP request? When it does not know the receiver’s MAC address.2 and enter the arp –a command.31. Click Switch1and then the CLI tab.2 and open the Command Prompt. Click 10.3 a. s. All rights reserved. 4 received Step 2: Examine the MAC address table on the switches. To what IP address does the MAC address entry correspond? 172.4 command.16.10.31.1 command.10. Enter the show mac-address-table command. Enter the ping 10.1 © 2016 Cisco and/or its affiliates.10. In general.31.31. r.10. Do the entries correspond to those in the table above? Yes p.2. Do the entries correspond to those in the table above? Yes q. Page 4 of 6 . Click Switch0.2 and open the Command Prompt. Enter the show mac-address-table command.31. l.Examine the ARP Table k.10.16. m.10. n. Click 172.3 command. What is the IP address of the new ARP table entry? 172.Packet Tracer . o. then the CLI tab. Part 3: Examine the ARP Process in Remote Communications Step 1: Generate traffic to produce ARP traffic.16. From 172. enter the ping 172. Why are two MAC addresses associated with one port? Because both devices connect to the same port through the Access Point. Click 172.16. Enter the ping 10.16. 31._______Enter the show arp command. How many MAC addresses are in the table? Why? Zero. Click Capture/Forward. © 2016 Cisco and/or its affiliates. What is the target destination IP destination address of the ARP request? 172.Examine the ARP Table u.10.10.1. Enter privileged EXEC mode and then the show mac-address-table command. Click Router1 and then the CLI tab.16.16. Step 2: Examine the ARP table on Router1. All rights reserved.Packet Tracer . v. the source uses ARP process to determine a MAC address for the router interface serving as the gateway.1. This document is Cisco Public. z. The Meaning of this command is totally than switch command show mac address-table.10. Why? The gateway address of the router interface is stored in the IPV4 configuration of the hosts. Is there an entry for 172.1 x. aa. If the receiving host is not on the same network.31.2? Yes What happens to the first ping in a situation where the router responds to the ARP request? It’s timed Out. Click the PDU that is now at Switch1. Switch to Realtime mode. Repeat the ping to 10. Page 5 of 6 . y. How many PDUs appear? 2 w.10. The destination IP address is not 10. Enter arp -d to clear the ARP table and switch to Simulation mode. Packet Tracer . All rights reserved. Page 6 of 6 . This document is Cisco Public.Examine the ARP Table Suggested Scoring Rubric Possib Question le Earned Activity Section Location Points Points Part 1: Examine an Step 1 10 ARP Request Step 2 15 Part 1 Total 25 Step 1 5 Step 2 20 Part 2 Total 25 Step 1 25 Step 2 25 Part 3 Total 50 Total Score 100 Part 2: Examine a Switch MAC Address Table Part 3: Examine the ARP Process in Remote Communications © 2016 Cisco and/or its affiliates.