Some systems, especially servers, might have multiple network interfaces.
The last column, Iface, means "interface" and represents the port on the system through which all of the connections are being made. One of the two devices that don't show a C in this example is a cell phone. In this example, all but one connection are marked C, which means "complete" and verifies the connection was successful. The second (HWtype) indicates that the connections are Ethernet connections, and the third (HWaddress) is the MAC address of each device. The first column shows IP addresses or host names. The first line contains the column headings. Here's an example of the arp command and what it shows you: $ arpĪddress HWtype HWaddress Flags Mask Ifaceįruitfly ether 7c:67:a2:cf:9f:ef CM enp0s25Ĭomtrend.Home ether f8:8e:85:35:7f:b9 C enp0s25ĭragonfly ether 20:ea:16:01:55:eb C enp0s25 (An arp-a command also will show the arp table in the command prompt on a Windows box, by the way.) Add -a to condense the output if you don't want to see the data organized into columns with headings. To display the ARP table on a Linux system, just type "arp".
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