Network - Subnet (Network Range)

1 - About

A subnet is technically a division of an network by range of ip address

In the internet age, all networks may be considered as subnet.

It is used to represent a subnet of hosts which can be reached over a network interface.

3 - Notation

A SubNet is a partially qualified internet address in numeric (dotted quad) form, optionally followed by a slash and the netmask, specified as:

All hosts on a subnet have the same mask.

4 - Example

4.1 - The world

5 - Type

5.1 - Private

A private subnet has no Internet access and can host the backend systems such as databases or application servers.

See Network - Private Network

5.2 - Public

A public subnet send and receive traffic directly from the internet.

See Network - Public Network

6 - Management

6.1 - Size

The maximum size of a network is given by the number of addresses that are possible with the remaining, least-significant bits below the mask prefix. See the mask table

6.2 - Partition

Network - Partition

6.3 - Bind

You can bind a whole subnet on one machine. See subnet binding

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