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ARP

(arp)


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

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.


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