The Address Resolution Protocol (ARP) is a communication protocol for discovering the link layer address, such as a MAC address, associated with a internet layer address, typically an IPv4 address. The protocol, part of the Internet protocol suite, was defined in 1982 by RFC 826, which is Internet Standard STD 37.

地址解析协议 （英语： Address Resolution Protocol，缩写： ARP）是一个通过解析 网络层 地址来找寻 数据链路层 地址的 网络传输协议，它在 IPv4 中极其重要。 ARP最初在1982年的 RFC 826 （征求意见稿） [1] 中提出并纳入 互联网标准 STD 37。 ARP也可能指是在多数 操作系统 中管理其相关地址的一个进程。 ARP是通过 网路位址 来定位 MAC地址。

2024年9月27日 · The acronym ARP stands for Address Resolution Protocol which is one of the most important protocols of the Data link layer in the OSI model. It is responsible to find the hardware address of a host from a known IP address. There are three basic ARP terms.

2021年9月9日 · ARP协议是“ Address Resolution Protocol”（地址解析协议）的缩写。 在以太网环境中，数据的传输所依懒的是MAC地址而非IP地址，而将已知 IP地址转换为MAC地址 的工作是由ARP协议来完成的。 在局域网中，网络中实际传输的是“ 帧 ”，帧里面是有目标主机的 MAC地址 的。 在以太网中，一个主机和另一个主机 进行直接通信，必须要知道目标主机的MAC地址。 但这个目标MAC地址是如何获得的呢？ 它就是通过 地址解析协 议获得的。 所谓“ 地址解析 ”就是主 …

The difference between arp and ping is that arp is resolving an IP address to a hostname while ping is performing the opposite. However, I would expect symmetry in the answers. I am only pursuing this to increase my understanding of how LAN networking works. I do appreciate anyone who is willing to assist me. Here is the sequence:

Address Resolution Protocol (ARP) is a protocol that maps dynamic IP addresses to permanent physical machine addresses in a local area network (LAN). The physical machine address is also known as a media access control (MAC) address.

2022年8月20日 · ARP is the protocol to manage IP to MAC translations and communicate this around the network. ARP stands for Address Resolution Protocol. It is a stateless protocol that has broadcast and request-response components. ARP is primarily used in IPv4 networks, though other networking systems also use it.

A user process can receive ARP packets by using packet(7) sockets. There is also a mechanism for managing the ARP cache in user-space by using netlink(7) sockets. The ARP table can also be controlled via ioctl(2) on any AF_INET socket. The ARP module maintains a cache of mappings between hardware addresses and protocol addresses.

2025年2月27日 · A device initiates an ARP request when it wants to communicate with an IP address; The request is broadcast to all devices on the local network; The device with the matching IP address responds with an ARP reply containing its MAC address; Network devices store recent IP and MAC address mappings in an ARP cache.These mappings usually expire after 1 to 20 minutes 3.

What is ARP and how does it work? The Address Resolution Protocol (ARP) is a communication protocol used for discovering the link-layer address (MAC address) that corresponds to a given network-layer address (IP address). It’s an essential part of the IPv4 networking stack and is used to enable communication between devices on the same local area network (LAN).