什么事ARP

What is ARP?

ARP is the process of mapping a network address to a physical address. It is used to convert a network address, such as a URL or an IP address, into a physical address that can be used to connect to a specific device on a network.

How does ARP work?

ARP works by sending out a request to all devices on a network that contains the IP address of the target device. Each device on the network then looks up its own ARP table to see if it has a mapping for the IP address. If a device has a mapping for the IP address, it will respond with its own physical address. The target device can then use the physical address to connect to the device.