IP address conflicts in wireless networks are no longer tricky

In the face of the ever-growing wireless network technology, we need to pay attention to the conflict of network addresses. How can we solve the conflict of network addresses? Here is an answer for us.

In order to facilitate surfing the Internet, many organizations and even families have begun to use wireless networking to access the Internet. However, many friends often encounter IP address conflicts during the establishment of wireless networks, this is because any workstation that uses the TCP/IP protocol needs to access the Internet or Intranet.

For an independent IP address, only workstations with the correct IP Address can access other workstations in the network. However, as network applications go deeper and the network scale expands, the number of workstations in the Network may expand sharply, so that IP address conflicts are inevitable. In order to effectively improve the efficiency of wireless network operation, we can start from the following aspects to make the wireless network "reject" the occurrence of IP address conflicts!

Starting from the NIC settings, the "deny" address conflict

There are many causes of IP address conflicts. One of the most important reasons is that the physical address of the NIC on the local computer is the same as that on other computers, as a result, the local computer cannot connect to the wireless network. To resolve this IP address conflict, it is necessary to make targeted measures based on the IP address allocation.

In general, wireless router devices in wireless networks usually use DHCP servers to manage IP addresses in workstations. This management method provides three IP Address allocation methods: the first allocation method is "automatic allocation". In this address allocation mode, as long as the common workstation in the wireless network is successfully rented from the DHCP server for the first time, the address will always be occupied by the workstation. The second allocation mode is "Dynamic Allocation". In this address allocation mode, once an ordinary workstation in a wireless network obtains an IP address from the DHCP server, it does not always occupy this address. Once the system restarts or the address lease expires, A common workstation must release the previously occupied IP address for use by other workstations in the wireless network. The third allocation method is "no allocation ", that is to say, the DHCP server does not assign an IP address to the normal workstation. You can assign an IP address from the row according to the unified planning of the network.

When the DHCP server of the wireless router is in the "not allocated" mode, we must specify an appropriate IP address for the normal workstation. If the IP address is not specified, then the normal workstation will not be able to access the wireless network, if the assigned IP address is incorrect, the normal workstation cannot log on to the network. If the specified IP address is repeated, the IP address conflict may occur in the wireless network. When the DHCP server of the wireless router is in the "Dynamic Allocation" mode, the common workstation generally does not need to specify an IP address. If we artificially set an IP address for the workstation, this may also cause address conflicts in the wireless network, or the normal workstation cannot log on to the wireless network normally.

Based on the above analysis, we can solve the wireless Internet access failure in a targeted manner based on the causes of address conflicts in the wireless network. For example, if the Wireless Router does not use a DHCP server, we must specify an appropriate IP address for the normal workstation. If the wireless router has enabled the DHCP server, then we must cancel the previously assigned IP address in the normal workstation, that is, adjust the IP address to "automatically get the IP address ".

When the DHCP server is enabled on the wireless router, if IP address conflict occurs, we need to enter the Windows system where the common workstation is located, click Start, set, network connection, and local connection commands, and click Properties in the local connection status window that appears, open the Property setting interface of the local connection. On the "General" tab page of the interface, select the "Internet Protocol (TCP/IP)" project and click the "properties" button, go to the parameter settings page, select "automatically obtain IP addresses", click "OK", and restart the wks system, in this way, a common workstation can obtain a new IP address.

Of course, if the Windows 98 operating system is installed on a common workstation, We can click the "Start"/"run" command in sequence, in the displayed system running dialog box, enter the string command "winipcfg" and click "OK". Then, click "release all" in the displayed window, click "update all" to resolve the IP address conflict. If a common workstation is installed on a Windows 2000 or Windows XP system, you can click the "Start"/"run" command in sequence, in the displayed system running dialog box, enter the string command "ipconfig/release" and click "OK". Then, the IP address that the normal workstation obtained from the DHCP server is released, then, run the "ipconfig/renew" command in the system running dialog box to obtain the new IP address from the DHCP server.

When the DHCP server is enabled on the wireless router, we can modify the lease parameters to solve the IP address conflict fault in the wireless network. The so-called "Lease Term" refers to the effective period of time when the DHCP server of the wireless router is assigned to the IP address used by the common workstation. If the flexibility of the wireless network set up is relatively high, we can try to adjust the lease time to a little shorter. If the wireless network is set up for a fixed user, we can try to adjust the lease time to a little longer, to avoid IP address conflict after the validity period ends.

In addition to the inability of normal workstations to obtain the correct IP address from the DHCP server, there is also a situation that may also easily lead to IP address conflicts, that is, the normal workstation is installed with multiple network card devices at the same time, if some of the NIC parameters are not correctly set, it may also cause address conflicts. Therefore, when we encounter an IP address conflict, we must carefully check whether multiple network card devices are installed in the current workstation. If multiple network card devices are found in the workstation, apart from checking the network card parameters in use, it is best to disable other network card devices that are not currently in use.