Subnet Va Subnet Mask

• Subnet Va Subnet Mask For Free

What is Subnetting?- Subnetting is the process of diving a network into small networks and is a common task on IPV4 networks.Before we discuss how to implement it it is useful to understand why and when we need to do it and to do that we are first going to work through a simple analogy to illustrate the problem subnetting solvesSubnetting AnalogyAs an analogy imagine a school and we need to split it into class rooms.But why split it into class rooms? HiIf you take a class c network as an example the starting subnet mask is 255.255.255.0The lower 8 bits you can use for subnetting.if you use 4 bits for the sub network and 4 for hosts you get a subnet mask of255.255.255.240128+64+32+16=240the network uses the high order bitsanyway 4 are for the network. With 4 bits you can have 16 values 0000 to 1111now 0000 and 1111 are normally not allowed for network or host addresses therefore you can have 14 subnets and 14 hosts.Hope that makes senseYou might also want to look at the worked examples.

Subnet Va Subnet Mask For Free

If a subnet's traffic is routed to an internet gateway, the subnet is known as a public subnet. In this diagram, subnet 1 is a public subnet. If you want your instance in a public subnet to communicate with the internet over IPv4, it must have a public IPv4 address or an Elastic IP address (IPv4). The mask Class A subnet masks must start with 255.0.0.0 at a minimum, because the whole first octet of an IP address (the IP address describes the specific location on the network) is used to.