Shulou(Shulou.com)06/03 Report--

There are four ways to detect whether IP is occupied. I believe many inexperienced people don't know what to do about it. Therefore, this paper summarizes the causes and solutions of the problem. Through this article, I hope you can solve this problem.

1. ARP caching method. The firewall or filtering packet method does not prevent ARP viewing, and the remote computer does not return a Ping success message, but rather informs the local computer of the corresponding MAC address. This can be seen through the ARP cache information. If the IP address corresponds to the MAC address, the computer is online, and the MAC address does not appear on the ARP cache table, indicating that the computer is not online. The first step is to check whether an IP address on the computer is online according to the ping method described above. If the ping return information is invalid, enter arp-an at the command prompt to view the local ARP cache list and see if the corresponding IP has MAC address information.

2. PING method: the easiest way to check whether a computer in the network is online is the corresponding IP address of the ping computer. For example, if you want to check whether 192.168.1.1 computers are online. Click start / run input cmd to enter the command line command prompt, and enter ping192.168.1.1 in command line mode. If the ping is passed, the computer corresponding to the IP address is already online.

3. Batch processing method: using the above principle, through the establishment of batch processing method, batch detection in the local area network. For example, look at the online address of the 192.168.1.* network segment. Right-click to create a new text file on the desktop and enter the following code: FOR/L%iIN192.168.114.%i-n1arp-a- > IP.txt (0mai 1255).

4. Save the file bat. Double-click on the batch file and you will automatically search for all IP in the page paragraph and save the ARP information found in the ip.txt file. If you return to the MAC address, you will be online.

After reading the above, have you mastered the four methods to detect whether IP is occupied? If you want to learn more skills or want to know more about it, you are welcome to follow the industry information channel, thank you for reading!

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