How can network maintenance personnel solve IP address conflicts?

I believe that every maintenance personnel will encounter IP address conflicts in actual work. Many people don't know why IP address conflicts occur, and they don't know how to solve them, including weak devices, switches, hard disk recorders, and computer network equipment. There is an IP address conflict, and we will look at this knowledge together today.

IP basics

The IP address is an Internet Protocol address. The unified address format is used to assign an address to each unit host in the network for accurate access by other devices on the network.

The IP address type is divided into a public address and a private address, and the public address is an address that is assigned to the public network and can directly access the Internet. Private addresses are non-registered addresses that can be used internally by each organization. We often use private addresses for corporate network networking, network cameras, and switch router configurations, such as 192.168.1.1; 10.0.0.1. Private address.

Reason for IP address conflict

The general network address conflicts are private address conflicts. We use private addresses in each LAN. However, many people are not sure about these concepts, such as the subnet mask and the default gateway. These basic names are unfamiliar, so they may be set. When the settings are repeated, or the settings of the automatically assigned addresses in the routing device are not modified, IP address conflicts will occur. Another situation is why people use temporary IP debugging in the LAN, and some common IP addresses will be used. The old device IP address in the system is the same, and it will also conflict.

Network IP conflict networking example

There are about 100 network device nodes in a LAN. These devices are distributed in a six-story building. Each layer of network nodes is connected through a 100M twisted pair cable and a secondary switch. Each layer of the switch is connected through Gigabit fiber. To the routing switch.

The private IP address used by this LAN is: 10.168.0.0 network segment, the default gateway is 10.168.0.1, and the subnet mask is 255.255.255.0. The static IP address allocation method is adopted. Users in the network will install the computer system when they encounter system problems, and then modify the Internet IP address by themselves, so that the IP address conflict often occurs in the LAN, which greatly increases the workload of the network maintenance personnel.

How to solve

Since the reason is already very clear, how can I avoid it? It is necessary to bind the user's computer physical address and IP address, which is generally effective. If the user in the LAN does not modify the IP address and steal other people's IP, this method can be solved.

However, this method is not the most thorough solution to completely solve the IP conflict problem. We not only bind the assigned IP address and MAC address, but also bind the idle IP address to the virtual MAC address, so that the user You cannot change the IP address, you can't use other people's addresses, and the IP addresses other than the bindings cannot be activated.

Therefore, adding or reducing network terminals in the LAN needs to find the network administrator authorization, which not only can effectively avoid IP conflicts, but also ensure the network security and stable operation, and effectively prevent viruses from invading.