Arp.exe

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ReactOS TCP/IPv4 Win32 Address Resolution Protocol

Displays and modifies the IP-to-Physical address translation tables used by address resolution protocol (ARP).

Command Line Help

ARP -s inet_addr eth_addr [if_addr] ARP -d inet_addr [if_addr] ARP -a [inet_addr] [-N if_addr]

 -a            Displays current ARP entries by interrogating the current
               protocol data.  If inet_addr is specified, the IP and Physical
               addresses for only the specified computer are displayed.  If
               more than one network interface uses ARP, entries for each ARP
               table are displayed.
 -g            Same as -a.
 inet_addr     Specifies an internet address.
 -N if_addr    Displays the ARP entries for the network interface specified
               by if_addr.
 -d            Deletes the host specified by inet_addr. inet_addr may be
               wildcarded with * to delete all hosts.
 -s            Adds the host and associates the Internet address inet_addr
               with the Physical address eth_addr.  The Physical address is
               given as 6 hexadecimal bytes separated by hyphens. The entry
               is permanent.
 eth_addr      Specifies a physical address.
 if_addr       If present, this specifies the Internet address of the
               interface whose address translation table should be modified.
               If not present, the first applicable interface will be used.

Example:

 > arp -s 157.55.85.212   00-aa-00-62-c6-09  .... Adds a static entry.
 > arp -a                                    .... Displays the arp table.