5.3.1.3 packet tracer answers
5.3.1.3 Packet Tracer Answers: How to Identify MAC and IP Addresses
Packet tracer is a powerful tool that allows you to create, configure, and simulate network scenarios using virtual devices. It can help you to learn, practice, and troubleshoot networking concepts and skills.
One of the basic skills that you need to master in packet tracer is identifying MAC and IP addresses. MAC addresses are unique identifiers for network interfaces, while IP addresses are logical addresses that enable communication between devices on different networks.
In this article, I will show you how to complete the activity 5.3.1.3 packet tracer answers, which involves gathering PDU information and answering reflection questions about MAC and IP addresses. You will learn how to use ping commands, simulation mode, and PDUs to capture and analyze data as it travels across different devices.
Part 1: Gather PDU Information
A PDU (protocol data unit) is a unit of data that contains information about the source and destination of a packet at different layers of the OSI model. For example, at layer 2 (data link), a PDU contains MAC addresses, while at layer 3 (network), a PDU contains IP addresses.
In this part, you will use ping commands and simulation mode to capture PDUs as they travel from one device to another. You will record the MAC and IP addresses for each device and each test case.
The topology used in this activity consists of six devices: two routers, two switches, one hub, and three computers. The devices are connected by copper or fiber wires.
To gather PDU information, follow these steps:
Click on a device and open the command prompt.
Enter a ping command to another device (for example, ping 10.10.10.3).
Switch to simulation mode and repeat the ping command.
A PDU will appear next to the source device.
Click on the PDU and note the destination MAC address, source MAC address, source IP address, destination IP address, and device name from the outbound PDU layer tab.
Click capture/forward to move the PDU to the next device.
Repeat steps 5 and 6 until the PDU reaches its destination.
Record the PDU information in a table using a format like this:
TestAt DeviceDest. MACSrc MACSrc IPv4Dest IPv4
Ping from 172.16.31.2 to 10.10.10.3172.16.31.200D0:BA8E:741A000C:85CC:1DA7172.16.31.210.10.10.3
Hub
Switch100D0:BA8E:741A000C:85CC:1DA7
Router0060:4706:572B00D0:588C:2401172.16.31.210.10.10.3
Switch00060:4706:572B00D0:588C:2401
Access Point
d>0060:4706:572B00D0:588C:2401172.16.31.210.10.10.3
Repeat the process for the following test cases:
Ping 10.10.10.2 from 10.10.10.3.
Ping 172.16.31.2 from 172.16.31.3.
Ping 172.16.31.4 from 172.16.31.5.
Ping 172.16.31.4 from 10.10.10.2.
Ping 172.16.31.3 from 10.10.10.2.
Part 2: Reflection Questions
In this part, you will answer 20 reflection questions based on the data you captured in part 1. These questions will help you to understand the concepts and processes involved in identifying MAC and IP addresses in packet tracer.
Here are the questions and answers:
Were there different types of wires used to connect devices?
Yes, there were different types of wires used to connect devices: copper and fiber.
Did the wires change the handling of the PDU in any way?
No, the wires did not change the handling of the PDU in any way.
Did the Hub lose any of the information given to it?
No, the Hub did not lose any of the information given to it.
What does the Hub do with MAC addresses and IP addresses?
The Hub does nothing with MAC addresses and IP addresses. It simply broadcasts the PDU to all connected devices.
Did the wireless Access Point do anything with the information given to it?
The wireless Access Point converted the PDU from a wired format to a wireless format and vice versa.
Did Switch0 or Switch1 lose any information given to it?
No, Switch0 and Switch1 did not lose any information given to it.
What did Switch0 and Switch1 do with MAC addresses and IP addresses?
Switch0 and Switch1 used MAC addresses to forward the PDU to the correct port based on their MAC address tables.
Did Router lose any information given to it?
No, Router did not lose any information given to it.
What did Router do with MAC addresses and IP addresses?
Router used IP addresses to determine the next hop for the PDU based on its routing table. It also changed the source and destination MAC addresses of the PDU based on its ARP table.
Did any device change its MAC address or IP address during this activity?
No, none of the devices changed their MAC address or IP address during this activity.
Did any device have more than one MAC address or IP address?
Yes, Router had more than one MAC address and IP address because it had two interfaces connected to different networks.
Did any device have no MAC address or IP address?
No, all devices had at least one MAC address and IP address.
Which devices had only MAC addresses and no IP addresses?
The Hub, Switch0, and Switch1 had only MAC addresses and no IP addresses because they operated at layer 2 (data link) of the OSI model.
Which devices had both MAC addresses and IP addresses?
The computers (172.16.31.x and 10.10.10.x) and Router had both MAC addresses and IP addresses because they operated at layer 3 (network) of the OSI model or higher.
Which devices had only IP addresses and no MAC addresses?
No devices had only IP addresses and no MAC addresses because all devices needed a MAC address to communicate at layer 2 (data link) of the OSI model.
>Router changed its source or destination MAC address more than once during this activity because it had to use different MAC addresses for different interfaces and networks.
Which device changed its source or destination IP address more than once during this activity?
No device changed its source or destination IP address more than once during this activity because IP addresses are fixed and do not change unless manually configured.
Which device did not change its source or destination MAC address at all during this activity?
The computers (172.16.31.x and 10.10.10.x) did not change their source or destination MAC address at all during this activity because they used the same MAC address for all communications.
Which device did not change its source or destination IP address at all during this activity?
All devices did not change their source or destination IP address at all during this activity because IP addresses are fixed and do not change unless manually configured.
Which layer of the OSI model uses MAC addresses?
Layer 2 (data link) of the OSI model uses MAC addresses.
Which layer of the OSI model uses IP addresses?
Layer 3 (network) of the OSI model uses IP addresses.
Conclusion
In this article, you learned how to complete the activity 5.3.1.3 packet tracer answers, which involved identifying MAC and IP addresses in packet tracer. You learned how to use ping commands, simulation mode, and PDUs to capture and analyze data as it travels across different devices. You also answered 20 reflection questions that helped you to understand the concepts and processes involved in identifying MAC and IP addresses in packet tracer.
Identifying MAC and IP addresses is a fundamental skill that you need to master in packet tracer. It can help you to troubleshoot network issues, verify network connectivity, and understand how data flows in a network.
If you want to learn more about packet tracer, you can check out the following resources:
Cisco Packet Tracer User Guide
Cisco Networking Academy Packet Tracer Courses
CCNA 1 Labs - Packet Tracer
FAQs
Here are some frequently asked questions related to the topic:
What is the difference between a MAC address and an IP address?
A MAC address is a unique identifier for a network interface, while an IP address is a logical address that enables communication between devices on different networks. A MAC address is usually assigned by the manufacturer of the device, while an IP address is usually assigned by a network administrator or a DHCP server.
How can I find out the MAC address and IP address of a device in packet tracer?
You can find out the MAC address and IP address of a device in packet tracer by using the show ip interface brief command on a router or switch, or by using the ipconfig /all command on a computer. You can also use the PDU details window in simulation mode to view the MAC address and IP address of a device.
>You can change the MAC address or IP address of a device in packet tracer by using the config terminal command on a router or switch, or by using the ipconfig /renew command on a computer. You can also use the desktop tab on a device to manually configure the MAC address or IP address.
Why do MAC addresses change as a packet travels across different devices, while IP addresses do not?
MAC addresses change as a packet travels across different devices because each device has a different MAC address for its interface. MAC addresses are used to forward packets at layer 2 (data link) of the OSI model within the same network. IP addresses do not change as a packet travels across different devices because they are used to route packets at layer 3 (network) of the OSI model between different networks.
What is the purpose of ARP (Address Resolution Protocol) in packet tracer?
ARP (Address Resolution Protocol) is a protocol that maps an IP address to a MAC address. It is used when a device wants to send a packet to another device on the same network, but does not know its MAC address. ARP sends a broadcast request to all devices on the network, asking for the MAC address of the device with the specified IP address. The device with the matching IP address replies with its MAC address. The sender then stores the IP-MAC mapping in its ARP table and uses it to send the packet.