what is subnet and prefix length?

Question

ASHOK KUMAR · Accepted Answer

A subnet is a smaller, logical division of a larger network. A prefix length is a number that indicates how many bits of an IP address are used for the network portion of the address. In the IP address 192.168.1.5/24, the /24 is the prefix length. It means the first 24 bits (192.168.1) identify the network, and the last 8 bits (.5) identify the host. This single network can then be divided into smaller subnets by increasing the prefix length. Here, take the network 192.168.1.0/24 and split it into two subnets by using a prefix length of /25. The two new subnets would be 192.168.1.0/25 and 192.168.1.128/25.

what is subnet and prefix length?

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