The document discusses IP addressing and subnetting. It defines IP address and subnet mask, and explains their importance for proper network communication. It covers classes of IP addresses and examples of subnet masks. The document also demonstrates how to identify network classes, perform IP addressing and subnetting, and troubleshoot issues like IP address conflicts. Key learning points are defining IP addresses and subnet masks, understanding basic IP addressing concepts, and correctly applying subnetting. Exercises are included to help with skills like assigning IP addresses and solving network problems.

1. IP Addressing
By: Leonel V. Rivas
PowerPoint Presentation Instructional Material

2. Energizer Dance Source: https://www.youtube.com/watch?v=DDaWbAPm5bU

3. Lesson Objectives
• 1. Define and give example of IP address and subnet mask
• 2. Demonstrate IP addressing and subnetting
• 3. Explain basic concepts IP addressing and subnetting
At the end of the lesson you should be able to:

4. Sending Messages
https://thumbs.dreamstime.com/z/mailman-postman-delivery-worker-circle-cartoon-illustration-delivering-parcel-delivering-letter-mail-set-inside-shape-done-39518731.jpg
http://ledger-paper.org/wp-content/uploads/2016/10/letter-address-example-53210498.png

5. Sending Messages
Sources:
https://thumbs.dreamstime.com/z/mailman-postman-delivery-worker-circle-cartoon-illustration-delivering-parcel-delivering-letter-mail-set-inside-shape-done-39518731.jpg
http://ledger-paper.org/wp-content/uploads/2016/10/letter-address-example-53210498.png
https://www.primeinspiration.com/wp-content/uploads/2016/01/family-dinner-infront-of-tv.jpg
IP Address
Subnet Mask
Subnet Mask
IP Address
The Same Network
 Unique IP Address
 The same Subnet
Mask
The Same Family
 Unique Name
 The same Home
Address

6. Like sending mail in Philpost, how important is
a correct IP address and subnet mask?
In reality IP addressing and subnetting…
1. Improve network performance and speed
2. Reduce network congestion
3. Boost network security
4. Control network growth
5. Ease administration
Importance
Source: https://www.networkcomputing.com/data-centers/5-subnetting-benefits
Correct IP address and
subnet mask ensures the
fast and secure delivery
of your message.

7. IP Addressing basic concepts
• An IP address is a number that is used to identify a device on the
network.
• The IP address of each device in a network is unique (no duplication).
• The IP address that is entered in configuring a device is a dotted-decimal
number, such as 192.168.1.5
(Duplicated IP address will lead to IP address Conflict.)

8. Classes of IP address and Subnet Mask
Classes
IP Address
(Example only)
Subnet Mask
(Default value)
Usage
Class A 192.1.0.0 255.0.0.0
Used for large networks, implemented by
large companies and some countries.
Class B 192.168.1.0 255.255.0.0
Used for medium-sized networks,
implemented by universities
Class C 192.168.8.0 255.255.255.0
Used for small networks, implemented by
ISPs for customer subscriptions
Class D Used for special use for multicasting
Class E Used for experimental testing

9. * An IP Address has two parts
-Servers
- Clients

11. Subnet Mask basic concept
• The subnet mask indicates the network portion of an IP
address.
• Like the IP address, the subnet mask is a dotted-decimal
number.
• Usually all hosts within a LAN use the same subnet mask.

12. IP: 192.168.1.1
Subnet Mask: 255.0.0.0 IP: 192.169.1.1
Subnet Mask: 255.0.0.0
IP: 192.170.1.1
Subnet Mask: 255.0.0.0
Minimum IP 192.168.1.1
Max IP 192.254.254.254

13. IP: 192.168.1.1
Subnet Mask: 255.255.0.0 IP: 192.168.2.1
Subnet Mask : 255.255.0.0
IP: 192.168.3.1
Subnet Mask : 255.255.0.0
Minimum IP 192.168.1.1
Max IP 192.168.254.254

14. IP: 192.168.1.25
Subnet Mask: 255.255.255.0
IP: 192.168.1.26
Subnet Mask: 255.255.255.0
IP: 192.168.1.27
Subnet Mask: 255.255.255.0
Minimum IP 192.168.1.1
Max IP 192.168.1.254

15. Exercise 1: Identifying Classes
Mind Clearing:
What are the classes of IP address and subnet mask again?

16. IP: 190.27.0.0
Subnet Mask: 255.0.0.0
IP: 190.25.0.0
Subnet Mask: 255.0.0.0
IP: 190.28.0.0
Subnet Mask: 255.0.0.0
IP: 190.26.0.0
Subnet Mask: 255.0.0.0
1
2
3
Router
Internet
What class does the IP address and subnet mask belong?
Ans.:Class A IP address and subnet mask

17. IP: 192.168.8.3
Subnet Mask: 255.255.255.0
IP: 192.168.8.1
Subnet Mask: 255.255.255.0
IP: 192.168.8.4
Subnet Mask: 255.255.255.0
IP: 192.168.8.2
Subnet Mask: 255.255.255.0
1
2
3
Router
Internet
What class does the IP address and subnet mask belong?
Ans.:Class C IP address and subnet mask

18. IP: 192.168.12.0
Subnet Mask: 255.255.0.0
IP: 192.168.10.0
Subnet Mask: 255.255.0.0
IP: 192.168.13.0
Subnet Mask: 255.255.0.0
IP: 192.168.11.0
Subnet Mask: 255.255.0.0
1
2
3
Router
Internet
What class does the IP address and subnet mask belong?
Ans.:Class B IP address and subnet mask

19. Exercise 2: IP addressing and Subnetting
Mind Clearing:
Which part of the IP address are we going to
increase?

20. IP:
Subnet Mask:
IP: 190.25.0.0
Subnet Mask: 255.0.0.0
IP:
Subnet Mask:
IP:
Subnet Mask:
1
2
3
Router
Internet
Exercise 2.1

21. IP: 190.25.0.0
Subnet Mask: 255.0.0.0
IP: 190.26.0.0
Subnet Mask: 255.0.0.0
1
2
3
Router
IP: 190.27.0.0
Subnet Mask: 255.0.0.0
IP: 190.28.0.0
Subnet Mask: 255.0.0.0
Internet
Answer 2.1

22. IP:
Subnet Mask:
IP: 190.254.1.1
Subnet Mask: 255.255.255.0
IP:
Subnet Mask:
IP:
Subnet Mask:
1
2
3
Router
Internet
Exercise 2.2

23. IP: 190.254.1.1
Subnet Mask: 255.255.255.0
1
2
3
Router
Internet
Answer 2.2
IP: 190.254.1.2
Subnet Mask: 255.255.255.0
IP: 190.254.1.3
Subnet Mask: 255.255.255.0
IP: 190.254.1.4
Subnet Mask: 255.255.255.0

24. IP:
Subnet Mask:
IP: 190.254.11.0
Subnet Mask: 255.255.0.0
IP:
Subnet Mask:
IP:
Subnet Mask:
1
2
3
Router
Internet
Exercise 2.3

25. IP: 190.254.11.0
Subnet Mask: 255.255.0.0
1
2
3
Router
Internet
Answer 2.3
IP: 190.254.12.0
Subnet Mask: 255.255.0.0
IP: 190.254.13.0
Subnet Mask: 255.255.0.0
IP: 190.254.14.0
Subnet Mask: 255.255.0.0

26. What did you learn in our lesson today?
Image source: https://www.grandmapepper.com/join-early-adopters-program/
What is an IP address?1
What is a subnet mask?2
What are the basic concepts of IP addressing?3
What are the basic concepts of subnetting?4
How important is IP addressing and subnetting
as a future technician?
6
How important is a correct IP address and subnet mask?5

27. Assignment/Project
• Enumerate the steps in creating network cable with pics.
• Portrait position for the illustration board.
• By pair
• Deadline: Monday Next week

29. Instruction: On your quiz notebook answer the
ff:
1. What is an IP address?
2. What is a subnet mask?
3. Give an example of IP address. (Any class)
4. Give an example of subnet mask. (Any class)

30. Dad’s PC2
7. IP:
8. Subnet Mask:
IP: 185.150.4.3
Subnet Mask: 255.255.255.0
Kid’s PC3
9. IP:
10. Subnet Mask:
Mom’s PC1
5. IP:
6. Subnet Mask:
Instruction: Study the network set-up below and then assign IP address and subnet mask on each personal computer.
Internet

31. 11-15 Explain
11-12. What will happen if you entered the same IP address in 2 computers
over the same network?
13.-15. How will you solve the problem on question 11-12?

32. Answers

33. Instruction: On a ½ sheet of paper answer the
ff:
1. An IP address is a number that is used to identify a device on the network.
2. The subnet mask indicates the network portion of an IP address.
3. 192.168.1.0 (Answers may vary)
4. 255.255.255.0 (Answers may vary but within the three classes)

34. Dad’s PC
3. IP: 185.150.4.5
4. Subnet Mask: 255.255.255.0
IP: 185.150.4.3
Subnet Mask: 255.255.255.0
Kid’s PC
5. IP: 185.150.4.6
Subnet Mask: 255.255.255.0
Mom’s PC
1. IP: 185.150.4.4
2. Subnet Mask: 255.255.255.0
Instruction: Study the network set-up below and then assign IP address and subnet mask on each personal computer.
Internet

35. 11-15 Explain
11-12. What will happen if you entered the same IP address in 2 computers
over the same network?
Answer: There will be an IP address conflict.
(Answers may vary but should have the same thought.)
13-15. How will you solve the problem on question 11-12?
Answer: Remove the duplicated entry by changing one of the IP address.
(Answers may vary but should have the same thought.)

37. Remedial Quiz

38. Instruction: On your quiz notebook answer the
ff:
1. What is an IP address?
2. What is a subnet mask?
3. Give an example of IP address. (Any class)
4. Give an example of subnet mask. (Any class)

39. Dad’s PC2
7. IP:
8. Subnet Mask:
IP: 185.150.4.3
Subnet Mask: 255.0.0.0
Kid’s PC3
9. IP:
10. Subnet Mask:
Mom’s PC1
5. IP:
6. Subnet Mask:
Instruction: Study the network set-up below and then assign IP address and subnet mask on each personal computer.
Internet

40. 11-15 Explain
11-12. What is the importance of a correct IP address and subnet mask?
13.-15. What is IP address conflict and how will you solve it?

41. Remedial Quiz Answers

42. 1. An IP address is a number that is used to identify a device on the network.
2. The subnet mask indicates the network portion of an IP address.
3. 192.168.1.0 (Answers may vary)
4. 255.255.255.0 (Answers may vary but within the three classes)

43. Dad’s PC2
IP: 185.152.4.3
Subnet Mask: 255.0.0.0
:
IP: 185.150.4.3
Subnet Mask: 255.0.0.0
Kid’s PC3
IP: 185.153.4.3
Subnet Mask: 255.0.0.0
Mom’s PC1
IP: 185.151.4.3
Subnet Mask: 255.0.0.0
Instruction: Study the network set-up below and then assign IP address and subnet mask on each personal computer.
Internet

44. 11-15 Explain
11-12. What is the importance of a correct IP address and subnet mask?
Correct IP address and subnet mask ensures the fast and secure delivery of
your message.
13.-15. What is IP address conflict and how will you solve it?
IP address conflict is a network problem caused by duplicated IP address. To
solve this problem you have change one of the duplicated IP address.