1. IP addressing

2. Table of classes A B C D E No of Hosts Per network No of Networks
Host ID
Net ID
Value of w
Class
16,777,214
126
X.Y.Z W
1-126 A
65534
16,384
Y.Z
W.X B
254
2,097,152 Z
W.X.Y C
N/A
Reserved for Multicast D
Reserved for Experiment E

3. Example IP Address = 192.168.1.12/24(default class C) IP Address 192
Network ID
192
168 1
Host ID 12

5. Broadcast Address All Bite in Host Portion is 1
Example 1 :
Network ID
192
168 1
Broadcast ad
192
168 1
Broadcast ad
255

6. What is Broadcast Address of? ?

7. First Address & Last Address
Network Address =
Network ID
192
168 1
First IP Add
192
168 1
Last IP add

8. What is first and last IP address?? ?

9. Network Address , First IP Address , Last IP Address , Broadcast Address of :? ? ?

10. Subnet Addressing
All bits that correspond to the network ID are set to 1.
All bits that correspond to the host ID are set to 0

11. Default Subnet mask
Subnet mask
255
Subnet mask
255
255
Subnet mask
255
255
255

12. Prefix Subnet Mask Class /8 A /16 B /24 C 255.0.0.0 255.255.0.0 C

13. Private Addresses Address Range Class 10.0.0.0 – 10.255.255.255 A– B – C
These addresses can be used on a private network.
they’re not routable through the Internet.

14. Count of hosts in class A
Subnet mask
Count of hosts = ( 2 ^m ) m: count of 0 ( zero)
Count of hosts = ( 2 ^24 ) - 2

15. Count of hosts in class B
Subnet mask
Count of hosts = ( 2 ^m ) m: count of 0 ( zero)
Count of hosts = ( 2 ^16 ) - 2

16. Count of hosts in class C
Subnet mask
Count of hosts = ( 2 ^m ) m: count of 0 ( zero)
Count of hosts = ( 2 ^8 ) – 2 = 254

17. Subneting

18. Addressing without Subnets
…...
Network

19. Addressing with Subnets
Network

20. Question
You should divide network to 2 different networks.
What is solution ?

21. Two way for calculate subnetting
Binary Method
Fast Way Method

22. Binary Method

23. divide network 192.128.129.0 to 2 networks
172
128
129
Network ID
Default mask
Subnet
Host
Network ID
Default mask
Subnet mask = ( /25 )

24. divide network 192.128.129.0 to 2 networks
Subnet mask is : ( / 25)
Network ID 1
If subnet is then
Network ID :
First valid host :
Last valid host :
Broadcast address :
If subnet is then
Network ID :
First valid host :
Last valid host :
Broadcast address :

25. In this example what is Network ID, First IP Address, Last IP Address, Broadcast Address ?

26. Subnetting in Class C
One bit can not be use for host

27. Subnetting in Class B

28. Subnetting in Class A

29. Fast Method

30. Computing Usable Subnetworks & hosts
Number of host address = 2^m (where m is the number of host bits)
Number of subnets = 2^n (where n is the number of subnet bits)
Increment of subnets = 2^p m
Example : n p
Class B:
Network
Host
Subnet
Count of hosts = (2^ 10) - 2=1022
Count of subnetwork = (2^ 6) - 2=62
Increment = 2 ^ 2 = 4

31. Computing Usable Subnetworks & hosts
Number of host address = 2^m (where m is the number of host bits)
Number of subnets = 2^n (where n is the number of subnet bits)
Increment of subnets = 2^p
Example : n
M , P
Class C:
Network
Subnet
Host
Count of hosts = (2^ 6) - 2=62
Count of subnet = (2^ 2) - 2=2
Increment = 2 ^ 6 = 64

32. Example 1

33. Example 1 Network =200.10.57.0 subnetmask =255.255.255.224
What is subnetworks?
What is range of possible address?
What is broad cast address per subnetwork?

34. Example 1 (continue) Network =200.10.57.0 subnetmask =255.255.255.224
Subnet
Host
Network
Count of hosts = (2^ 5) - 2=30
Count of subnetwork = (2^ 3) - 2=6
Increment = 2^ 5 = 32

35. range of possible address
Example 1 (continue)
broadcast address
range of possible address
subnetwork address
subnet no –
subnet 0
subnet 1
subnet 2
subnet 3
subnet 4
subnet 5
subnet 6
subnet 7

36. What is Subnet addresses First valid IP Address Last valid IP Address
Broadcast Address
For
Network address:
Subnet mask :

37. What is Subnet addresses First valid IP Address Last valid IP Address
Broadcast Address
For
Network address:
Subnet mask :

38. What is Subnet addresses First valid IP Address Last valid IP Address
Broadcast Address
For
Network address:
Subnet mask :

39. What is Subnet addresses First valid IP Address Last valid IP Address
Broadcast Address
For
Network address:
Subnet mask :

40. What is Subnet addresses First valid IP Address Last valid IP Address
Broadcast Address
For
Network address:
Subnet mask :

41. How calculate Network ID, First IP Address, Last IP Address, Broadcast Address of IP Classless?

42. Example 1
172 16 2
160
Host 1
Mask
Subnet 4
Broadcast
First
Last

43. Example 1
172 16 2
160
Host 1
Mask 2
Subnet
Broadcast
First
Last

44. Example 1
172 16 2
160 3
Host 1
Mask 2
Subnet
Broadcast
First
Last 7

45. Example 1
172 16 2
160 3
Host 1
Mask 2
Subnet 4
Broadcast
First
Last

46. Example 1
172 16 2
160 3
Host 1
Mask 2
Subnet 4
Broadcast 5
First 6
Last

47. Example 1
172 16 2
160 3
Host 1
Mask 2
Subnet 4
Broadcast 5
First 6
Last

48. Example 1
172 16 2
160 3
Host 1
Mask 2
Subnet 4
Broadcast 5
First 6
Last 7

49. Example 1
172 16 2
160 3
Host 1
Mask 2 8
Subnet 4
Broadcast 5
First 6
Last 7

50. Example 1
IP Address:
172 16 2
160 3
Host 1
Mask 2 9 8
Subnet 4
Broadcast 5
First 6
Last 7

51. Example 2 IP Address = 92.85.10.86 /10 What is subnet mask?
What is Network number?
What is broadcast address?
= 64
Network number =
= 172
Broad cast address =
First Valid IP address =
Last Valid IP address =

52. Question in class IP Address = 192.168.15.19 /28
What is subnet mask?
What is Network number?
What is broadcast address?
What is First Valid IP address ?
What is Last Valid IP address ?