What does the IP address mean?

IP Address refers to Internet Protocol Address (English: Internet protocol address), which is the abbreviation of IP address.

for example, 6.18.93.187 is a class a IP address. 6 is the network number, and 18.93.187 is the number of the local computer.

a class a IP address means that among the four segments of an IP address, the first segment is the network number, and the remaining three segments are the numbers of the local computer. If the IP address is expressed in binary, the Class A IP address consists of a 1-byte network address and a 3-byte host address, and the highest bit of the network address must be "".

in class a IP addresses, the length of network identification is 8 bits, and the length of host identification is 24 bits. the number of class a network addresses is small, with 126 networks, and each network can accommodate more than 16 million hosts.

class a IP address, the address range is 1... to 127.255.255.255 (binary representation: 111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111. The last one is the broadcast address.

the subnet mask of class a IP address is 255.., and the maximum number of hosts supported by each network is 256 to the third power -2=16777214.

Extended data:

It should be noted that you can improve the network transmission efficiency by not assigning different IP addresses to computers on the same network. In fact, computers in the same network are still in the same broadcast domain, and the number of broadcast packets will not be reduced due to different IP addresses. Therefore, simply designating different network segments for computers cannot achieve the purpose of dividing broadcast domains.

the disadvantage of traditional IP address classification is that routing cannot be used within the network, so that a relatively large network, such as a Class A network, will become difficult to manage because there are too many hosts in the network. Therefore, the NetMask is introduced to logically divide a large network into some small networks. Subnet mask is composed of a series of 1s and s. By AND-ing it with IP address, we can indicate what the network number of an IP address is.

for traditional IP address classification, the subnet mask of Class A address is 255...; The subnet mask of Class B address is 255.255..; The subnet mask of Class C address is 255.255.255.. For example, if you want to divide a class B network 166.111.. into multiple class C subnets, just set its subnet mask to 255.255.255., so that 166.111.1.1 and 166.111.2.1 belong to different networks.

References:

Baidu Encyclopedia -IP address