Explain the use of slash notation such as 172160030SolutionS

Explain the use of slash notation, such as 172.16.0.0/30

Solution

Size of the prefix in bits is written after the oblique for IP4/IP6 addresses.This is called slash notation.IP4 addresses have 32bits in address space.

For example, if a network has the address “172.16.0.0/30”, the number “30” refers to how many bits are contained in the network. From this, the number of bits left for address space can be calculated. As all IPv4 networks have 32 bits, and each “section” of the address denoted by the decimal points contains eight bits, “172.16.0.0/30” leaves two bits to contain host addresses. This is enough space for 4 host addresses. These host addresses are the IP addresses that are necessary to connect your machine to the Internet.

The above holds true for IP4 addresses.