ARP User Commands
arp - Address Resolution Protocol
arp [OPTIONS] [IPADDR]
Communications over the local network use the fixed MAC addressing
assigned by device manufacturers. The Address Resolution Protocol (ARP)
helps us find the MAC address associated with the IP addresses that we
give to local devices and computers. The ARP command displays the
If IPADDR is specified the command displays the mapping for the IP
address if known. Otherwise the entire database of active devices
Issues an ARP request for IPADDR if not present in the cache.
Removes IPADDR from the cache. This forces the JNIOR to issue
a new request when next attempting to contact the remote device.
Scans the entire subnet displaying the IP addresses used by any
computers or devices on the network. In addition to the IP address
the listing shows the MAC address and other identification
information. If the remote device is referenced in the JNIOR's
network configuration its role is also indicated.
The ARP -S command is useful in locating unused IP addressing.
HELP Topics: IPCONFIG