Computer IP address is occupied, you can use the following three methods:

① Take win7 as an example, open the network and * * * sharing center, click Wireless Connection, Properties, double-click tcp\ipv4, and manually set the ip address.

② Or Computer-Properties-Advanced System Settings-Computer Name-Change-Restart the computer.

③ The former is to set the ip address manually, and the latter is to automatically obtain the new address after restarting on the premise of automatically obtaining the ip address.

Internet Protocol (IP) is the foreign abbreviation of Inter Protocol, and the Chinese abbreviation is "Network Association".

The interconnection protocol between networks is also a protocol designed for computer networks to communicate with each other. In the internet, it is a set of rules that can make all computer networks connected with the internet communicate with each other, and stipulates the rules that computers should abide by when communicating on the internet. As long as it conforms to the IP protocol, any computer system produced by any manufacturer can be interconnected with the Internet. IP addresses are unique and can be divided into five categories according to the nature of users. In addition, IP also has the meanings of entrance protection, intellectual property, pointer register and so on.

2. What if the IP address of the LAN is occupied by others?

Solution:

First of all, you should confirm in the TCP/IP properties window whether you choose to automatically obtain IP or use the following IP address, which is a fixed IP address.

If you choose to obtain IP automatically, then there is no occupation, because the IP address is randomly assigned by the DHCP server from the address pool. When you don't use it, the DHCP server will assign the free IP address to the PC that needs to be used. When you need to use it, the DHCP server will give you another IP, which is not exclusive to you.

If it is a fixed IP, it seems inevitable in the local area network, and there are many human factors. You can try changing the IP.

Extended data:

IP address; network address

In the local area network, there are two special IP addresses, one is the network number and the other is the broadcast address. The network number is an address used for three-layer addressing, representing the whole network itself; The other is the broadcast address, which represents all the hosts in the network. The network number is the first address in a network segment, and the broadcast address is the last address in a network segment. These two addresses cannot be configured on the computer host.

For example, in the network segment of 192. 168.0.0, the network number is 192. 168.0.0, and the broadcast address is192.168. Therefore, in a LAN, the addresses that can be configured in the computer are two less than those in the network segment (network number, broadcast address), and these addresses are called host addresses. In the above example, only192.168.0.1to 192. 168.0.254 can be configured on the computer.