Resolve IP address conflicts in wireless networks (figure)

This article describes in detail how to resolve IP address conflicts in wireless networks and how such conflicts are generated. I believe this article will help you.

In some wireless networks, due to the large number of clients, many administrators will use the DHCP service provided by the wireless router to provide TCP/IP parameter configuration for the client, such as IP addresses, Gateway addresses, and DNS servers. However, in your wireless network, some computers must manually specify the TCP/IP parameter configuration. In this case, the dynamic IP Address Provided by the DHCP server and the manually specified static IP address coexist, if you do not properly configure the parameters of the DHCP server in the wireless router, IP address conflict may easily occur.

How does a conflict occur?

For example, in a wireless network managed by the author, there are 50 computers, five of which are manually set static IP addresses due to special needs. The IP address segment used is "192.168.1.10 ~ 192.168.1.14 ". The other 45 computers obtain parameters such as IP addresses through the DHCP service of the wireless router. However, if the "address pool" parameter of the DHCP service in your wireless router is set improperly and contains the IP address segments used by the above five computers, an IP address conflict may occur.

The cause of IP address conflict is very simple. For example, if computer A with the static IP Address "192.168.1.11" is not started, when A computer B in the wireless network requests an IP address from the DHCP server of the wireless router, the DHCP server finds that the IP address "192.168.1.11" is currently idle and is not used by any computer. Therefore, it is very likely that the IP address will be allocated to the computer B requesting the IP address. When computer A starts and goes online, it will find other computers using the IP address "192.168.1.11", so there will be IP address conflicts.

Set DHCP parameters properly

Knowing how IP address conflicts occur in wireless networks is easy to prevent. As long as you properly set the "address pool" parameter in the DHCP server. You must be clear about the IP address segments occupied by computers using static IP addresses. To avoid IP address conflicts, When configuring the "address pool" parameter of the DHCP server, be sure to exclude these IP address segments occupied by static IP addresses.

Here we take the author's wireless network as an example (). computers using static IP addresses occupy "192.168.1.10 ~ The IP address segment 192.168.1.14. Therefore, this IP address segment must be excluded when setting the "address pool" parameter to prevent conflict. For example, I set the "address pool" parameter to "192.168.1.15 ~ 192.168.1.60 ", which not only meets the needs of 45 Dynamic IP address clients, but also prevents IP address conflicts.