Below is list of all 1024 subnets:īelow is list of range of IP address of these 1024 subnets.: Block size of each subnet (4 th Octet) = 256 – 192 = 64 (decimal value of 4 th octet with two 1s).įor /26 mask, we will get 1024 subnets, each with 62 hosts, each subnet has block size of 64.Block size of each subnet(3 rd Octet) = 256 – 255 =1 (decimal value of 3rd octet with all 1s).But once you look the example below, things will be clearer. Block size from 3 rd Octet is 1 and Block size from 4 th Octet is 64.To find Block Size, we need to be careful in calculating the block size because block size for 172.16.0.0/26 will be calculated from 3 rd and 4 th octets both. Binary value of 3 rd octet is 11111111 and 4 th Octet is 11000000. Below is list of all 256 subnets:īelow is list of range of IP address of these 256 subnets: Block size of each subnet = 256 – 255(decimal value of 3 rd octet with all 1s) = 1įor /24 mask, we will get 256 subnets, each with 254 hosts, each subnet has block size of 1.N = 8, (all 8 bits of 3 rd Octet are borrowed for network portion), so 2 8 = 256 Binary value of 3 rd octet is 11111111 and 4 th Octet is 00000000. Below is list of all 128 subnets.īelow is list of range of IP address of these subnets.: Block size of each subnet = 256 - 254 = 2įor /23 mask, we will get 128 subnets, each with 510 hosts, each subnet has block size of 2.One part identifies the host (computer), the other part identifies the network to which it belongs. The following diagram modifies the above example by moving 2 bits from the host part to the network prefix to form four smaller subnets each one-quarter of the previous size.Ī subnet mask is used to divide an IP address into two parts. This divides a network into smaller subnets. Subnetting is the process of designating some high-order bits from the host part as part of the network prefix and adjusting the subnet mask appropriately.
0 Comments
Leave a Reply. |