Purpose?
- Identify device and to allow communication between them
Dynamic IP
- A dynamic IP is assigned automatically by a device call a DHCP server (usually you router)
- The Ip address may change from time to time, such as when you restart your router
Static IP
- A static Ip is manually assigned and doesn’t change. This is often used for devices that need to be easily reachable, like printers or servers
- Think of your permanent home address-it stays the same all of the time
- If you set up a home web server, you might assign it a static IP so you can always reach the same address
Classes of IP
- IPs in IPv4 are divided into different classes to define the range and purpose of each address
- These classes help organize and allocate IP addresses for different types of networks, from small home networks to large enterprise
- The most common IP classes are Class A,B,C
- There are also Class D, used for multicast
- And Class E, reserved for future use
| LOL |
Private Address Range |
Private Address Range |
| Class |
Start address |
Finish address |
| A |
10.0.0.0 |
10.255.255.255 |
| B |
172.16.0.0 |
172.32.255.255 |
| C |
192.168.0.0 |
192.168.255.255 |
| LOL |
Public Address Range |
Public Address Range |
| Class |
Start Address |
Finish Address |
| A |
0.0.0.0 |
126.255.255.255 |
| B |
128.0.0.0 |
191.255.255.255 |
| C |
192.0.0.0 |
223.255.255.255 |
| D |
224.0.0.0 |
239.255.255.255 |
| E |
240.0.0.0 |
254.255.255.255 |