Chapter 5 Exploring IPv4

Chapter 5 Overview Exploring the components of an IPv4 address Exploring an IPv4 address in binary Subnetting IPv4 addresses Comparing manual and automatic assignment 2

Exploring the Components of an IPv4 address Valid IP addresses 10.80.1.5 172.16.5.254 192.168.1.4 Invalid IP addresses 10.80.265.5 172.16.254 3

Exploring the Components of an IPv4 address Viewing an IP address with ipconfig 4

Network ID and Host ID Determined with subnet mask 255.0.0.0 255.0.0 255.255.255.0 5

Network ID and Host ID Separating network ID and host ID 6

Network ID and Host ID Separating network ID and host ID 7

Exploring the Components of an IPv4 address What’s wrong with this picture? 8

Exploring the Components of an IPv4 address Identifying the default gateway 9

Exploring the Components of an IPv4 address Determining local and remote addresses 10

Exploring the Components of an IPv4 address Understanding Classful IP addresses 11

Exploring the Components of an IPv4 address Identifying upper-level bits of Classful IP address 12

Exploring the Components of an IPv4 address Classful IP addresses 13

Exploring the Components of an IPv4 address Determining network ID of classful IP addresses 14

Exploring the Components of an IPv4 address Reserved (private )IP addresses 10.0.0.1 to 10.255.255.254 172.16.0.1 to 172.31.255.254 192.168.1.1 to 192.168.255.254 15

Exploring an IPv4 Address in Binary Understanding the bits of an IP address 16

Exploring an IPv4 Address in Binary Binary values 17

Exploring an IPv4 Address in Binary Using a calculator to convert from binary to decimal 18

Exploring an IPv4 Address in Binary Using a calculator to convert from decimal to binary 19

Exploring an IPv4 Address in Binary Understanding CIDR notation 20

Exploring an IPv4 Address in Binary Masking the IP Address 21

Exploring an IPv4 Address in Binary Using classless IP addresses 22

Subnetting IPv4 A single class C network 23

Subnetting IPv4 Creating subnets 24

Subnetting IPv4 Subnetting with two high-order bits 25

Subnetting IPv4 A subnetted network 26

Subnetting IPv4 Determining the number of subnets and hosts in a Class C network 27

Subnetting IPv4 Determining the number of subnets and hosts in a Class B network 28

Subnetting IPv4 Determining the number of subnets and hosts in a Class A network 29

Identifying Local and Remote Addresses 1. Convert the IP address to binary. You can use a calculator to do this. 2. Convert the subnet mask to binary. 3. Draw a vertical line after the last one in the subnet mask: Everything to the left of the line is the network ID. Everything to the right of the line is the host ID. 4. Determine the network ID in binary. This is as simple as copying the IP address in binary to the left of the line and writing 0s to the right of the line. 5. Convert the network ID to decimal. 30

Subnetting IPv4 Applying Subnetting Knowledge 31

Subnetting IPv4 Applying Subnetting Knowledge 32

Subnetting IPv4 What’s wrong with this picture? 33

Subnetting IPv4 Subnet this network Start with 192.168.20.0 and 255.255.255.0 34

Subnetting IPv4 One possible solution 35

Comparing Manual and Automatic Assignment Manually configuring IPv4 or using DHCP 36

Comparing Manual and Automatic Assignment Manually configuring IPv4 or using DHCP 37

Comparing Manual and Automatic Assignment Understanding APIPA 38

Chapter 5 Summary Exploring the components of an IPv4 address Exploring an IPv4 address in binary Subnetting IPv4 addresses Comparing manual and automatic assignment 39