Arp

Displays and modifies the IP-to-Ethernet or token ring physical address translation tables used by the Address Resolution Protocol (ARP). This command is available only if the TCP/IP protocol has been installed.

arp -a [inet_addr] [-N [if_addr]]

arp -d inet_addr [if_addr]

arp -s inet_addr ether_addr [if_addr]

Parameters

-a

Displays current ARP entries by querying TCP/IP. If inet_addr is specified, only the IP and physical addresses for the specified computer are displayed.

-g

Identical to -a.

inet_addr

Specifies an IP address in dotted decimal notation.

-N

Displays the ARP entries for the network interface specified by if_addr.

if_addr

Specifies, if present, the IP address of the interface whose address translation table should be modified. If not present, the first applicable interface is used.

-d

Deletes the entry specified by inet_addr.

-s

Adds an entry in the ARP cache to associate the IP address inet_addr with the physical address ether_addr. The physical address is given as 6 hexadecimal bytes separated by hyphens. The IP address is specified using dotted decimal notation. The entry is permanent, that is, it is automatically removed from the cache after the time-out expires.

ether_addr

Specifies a physical address.