Difference between revisions of "Address Resolution Protocol (ARP)"
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Address Resolution Protocol is a network layer protocol used to convert an IP address into a physical address, such as an Ethernet address. | Address Resolution Protocol is a network layer protocol used to convert an IP address into a physical address, such as an Ethernet address. | ||
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==ARP Table== | ==ARP Table== | ||
| − | + | Command in Linux and macOS : <code>[[arp]] -an </code> | |
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==See also== | ==See also== | ||
Revision as of 14:29, 14 January 2020
Address Resolution Protocol is a network layer protocol used to convert an IP address into a physical address, such as an Ethernet address.
A host wishing to obtain a physical address broadcasts an ARP request onto the TCP/IP network. The host on the network that has the IP address in the request then replies with its physical hardware address.
Basics
When you try to ping an IP address on your local network, say 192.168.1.1, your system has to turn the IP address 192.168.1.1 into a MAC address. This involves using ARP to resolve the address.
ARP Table
Command in Linux and macOS : arp -an
See also
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