Azure VNET

• Network --> communications between devices.
• IP Address --> unique identifier to each device which is internet protocol address.

IPv4

1. 4th of version of Internet protocol.
2. 32 bit
3. Totally 4 blocks with 8 bit segments each. A , B , C & D.
4. 2 types of IP address.
5. Public ( Mainly using internet routing ) & Private ( Office )
6. Range --> 0 to 255
7. 0 & 255 reserved by system.
8. 127 --> loop-back address. 253 address we can use.
9. Then how to find whether its public or private ? By classes.
10. A, B , C --> Commonly used.
11. D & E --> Multi-casting & Research purpose.
12. Class A --> 0 to 127 Public , Private 10 is only used eg., 10.0.0.1 ( 16 million hosts can be declared )
13. Class B --> 128 to 191 Public , Private 172 is only used eg., 172.16.0.1 to 171.16.255.254 ( 65,536 hosts can be declared ) - Med size networks.
14. Class C --> 192 to 223 Public , Private 192.168.1.1 small network for 254 hosts.
15. Class D --> 224 to 239 for multicast groups.
16. Class E --> 240 - 255 for research purpose.

As a whole , the private range is .

A --> 10.0.0.1
B --> 172.16.0.0
C --> 192.168.0.0

Subnetting

• Slashing the network.

Virtual Network in Azure

• Software based network connects virtual machines.

Subnet in Azure

• Subdivison of VNET.
• we can organise the resources within a network.
• Features as follows ,

Azure Portal

All service >> Networking >> Virtual Networks >> Create

• Gave a wrong IP , then you can see a prompt is coming.

• VNET & Subnet creation

Notes

1. DNS , DHCP & Gateway , 255 Broadcast --> 4 IP's are reserved.