CCNA IP Address, IPV4 discussion Youtube video link: https://www.youtube.com/watch?v=gojZljIHjCg

1. Created and Presented By:
Anis Mizi
Student of CSE (Stamford University Bangladesh)
49th Batch
Email:fulsuccess9@gamil.com
Facebook: https://www.facebook.com/mizianis

2. IP ADDRESSING
• Protocol
• TCP/IP, NetBIOS(Microsoft),IPX/SPX(Novell)
• TCP/IP-http, ftp, smtp, DNS
• What is IP addressing
• Unique name for each device
• LAN example
• Logical Address
• Network Layer Address (Layer 3)

4. IP versions
• Two Versions of IP:
 IP version 4 (32 bit address)
 IP version 6(128 bit address)

5. IP version 4 Format
• IP version 4
 Bit is represented by 0 or 1 (binary)
 IP address in binary form(32 bits)
01010101.00000101.10111111.00000001
 32 bits are divided into 4 octets:
 IP address in decimal form:
85.5.191.1
 Decimal form for easy format and readable
 Computer understands only binary
 Still in use

6. IP version 6 Format
• Total 128 bit address
• 16 bit in each block
• 8 octets/ portion in total
• 16 bit block is converted to 4 digit
hexadecimal number
• Each portion is separated by colons
• FD00:0DB8:7654:3210:2C4C:BA17:7124:0032
• For future use

7. IP version 4(continues)
• Minimum number in each portion is
0(00000000 in binary)
• Maximum number in each portion is
255(11111111 in binary)
• Range of IP address is 0 to 255
• More than 255 is not applicable
• Check by 100.256.1.0
• Total IP address range of IPV4 is 0.0.0.0 to
255.255.255.255

8. IPV4 classes

9. IPV4 class ranges
• IPV4 Classes
 Class A – (0 to 127)
 Class B – (128 to 191)
 Class C – (192 to 223)
 Class D – (224 to 239)
 Class E – (240 to 255)
• Class A,B,C – LAN/WAN
• Class D – Multicasting
• Class E – Reserved for future research and
development

10. Identifying IP Class
• See only first portion of any IP
• Example:
 192.168.10.10 – C Class
 150.12.10.10 – B Class
 100.10.10.10 – A Class
• Don’t need to see remaining three portions
while identifying IP Class

11. Types of Data Communication
• Generally, 3 types of communication in
network
 Unicast – One to One
 Broadcast – One to all
 Multicast – One to Group

12. Unicast Communication
• One to one communication in a network
• Example (network types.PNG)
• Most communication is default one-to-one
communication

13. Broadcast Communication
• One to all communication in a network
• Example (network types.PNG)
• 200 devices connected in a LAN
• Universal broadcast address is
255.255.255.255

14. Multicast Communication
• One to a group communication in a network
• Example (network types.PNG)
• Suppose 100 devices are connected in a LAN
• Total 10 groups(each contains 10 devices)
• Example: Video conference, Online live
streaming, Opening match etc.
• D class IP identifies multicast traffic/group
• Multicast is not included into CCNA course
• We can not use it in LAN or WAN(check by
putting 224 in first portion of IP)

15. IP Address(Network & Host Parts)
• Each IP has 4 portions
• Each portion represents 8 bits
• These 4 portions are divided into two parts:
 Network part
 Host part
• Network and Host parts
 Class A – N.H.H.H (1N and 3H)
 Class B – N.N.H.H (2N and 2H)
 Class C – N.N.N.H (3N and 1H)

16. Understanding Network and Host parts
• Example (Floor example.PNG)
• Floor as network and rooms as hosts
• Rooms on same floor as Same network
• Rooms on different floors as different network
• Host – Single device
• Network – Set of devices
• Example (IP address(Lan).PNG)
• Each computer is a host
• Host device can be computer, router, firewall
etc

17. Network
• Question:
 192.168.10.10
 192.168.5.10
Suppose these two computers are on Same LAN. Will they be
able to communicate?
• Example (IP address(Lan).PNG)
• Physically they are on same Network(as on same LAN)
but logically they are on different network(by IP
addresses)
• To be in same network for devices, the network portion
of those host devices must be same.
• By default different network can not communicate
without a router

18. Examples
• Will they communicate or not?
• Example 1:
 210.10.10.10
 210.10.15.10
• Example 2:
 150.12.10.10
 150.12.15.15
• Example 3:
 100.10.10.10
 100.15.15.15

19. Network design
Task: design a network of 200 computers for a company
Requirements:
• All the computers should be in Same network
• Each host device will have unique IP address
Design:
• We can use any class (A,B,C) IP addresses to design this
network
• Let’s say we want to use C class IP
• We connected 200 devices physically using switches. So
they are on same network physically
• Make sure they are logically in Same network

20. Network design (continues)
Solution:
• Suppose our network is 192.168.10.0
• So IP address for hosts will be like this
 192.168.10.1
 192.168.10.2
 192.168.10.3
 : . : . : .4
 : . : . : . :
 192.168.10.255
• So we get total 256 hosts (192.168.10.(0-255)) in
one network of C class IP
• Let’s design the network in Cisco Packet Tracer.

21. Network design (continues)
Problem: If the manager of the company says we may
need 200 more computers in that same network.
Solution:
• C class supports total 254 hosts in one network. So
we have to use B class
• Suppose our Network is 172.16.0.0
• So IP addresses for hosts will be like this
 172.16.0.1
 172.16.0.2
 : . : .: .3
 : . : .: . :
 172.16.0.255

22. Network design (continues)
• Again
 172.16.1.1
 172.16.1.2
 : . : .: .3
 : . : .: . :
 172.16.1.255
• Similarly We can go up to 172.16.255.255
• 256*256 = 65536(Actually it is 65534)
• So we get total 65534 hosts (172.16.(0-255).(0-
255)) in one network of B class IP
• Accordingly we get total 16777214 hosts (10.(0-
255).(0-255).(0-255)) in one network of A class IP

23. Contents of Next tutorial
• Size of Network
• Network Address and Broadcast Address
• Subnet Mask

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