arp man page on MacOSX

Man page or keyword search:  
man Server   23457 pages
apropos Keyword Search (all sections)
Output format
MacOSX logo
[printable version]

ARP(8)			  BSD System Manager's Manual			ARP(8)

NAME
     arp — address resolution display and control

SYNOPSIS
     arp [-n] [-i interface] hostname
     arp [-n] [-i interface] [-l] -a
     arp -d hostname [pub] [ifscope interface]
     arp -d [-i interface] -a
     arp -s hostname ether_addr [temp] [reject] [blackhole] [pub [only]]
	 [ifscope interface]
     arp -S hostname ether_addr [temp] [reject] [blackhole] [pub [only]]
	 [ifscope interface]
     arp -f filename

DESCRIPTION
     The arp utility displays and modifies the Internet-to-Ethernet address
     translation tables used by the address resolution protocol (arp(4)).
     With no flags, the program displays the current ARP entry for hostname.
     The host may be specified by name or by number, using Internet dot nota‐
     tion.

     Available options:

     -a	     The program displays or deletes all of the current ARP entries.

     -d	     A super-user may delete an entry for the host called hostname
	     with the -d flag.	If the pub keyword is specified, only the
	     “published” ARP entry for this host will be deleted.  If the
	     ifscope keyword is specified, the entry specific to the interface
	     will be deleted.

	     Alternatively, the -d flag may be combined with the -a flag to
	     delete all entries.

     -i interface
	     Limit the operation scope to the ARP entries on interface.
	     Applicable only to the following operations: display one, display
	     all, delete all.

     -l	     Show link-layer reachability information.

     -n	     Show network addresses as numbers (normally arp attempts to dis‐
	     play addresses symbolically).

     -s hostname ether_addr
	     Create an ARP entry for the host called hostname with the Ether‐
	     net address ether_addr.  The Ethernet address is given as six hex
	     bytes separated by colons.	 The entry will be permanent unless
	     the word temp is given in the command.  If the word pub is given,
	     the entry will be “published”; i.e., this system will act as an
	     ARP server, responding to requests for hostname even though the
	     host address is not its own.  In this case the ether_addr can be
	     given as auto in which case the interfaces on this host will be
	     examined, and if one of them is found to occupy the same subnet,
	     its Ethernet address will be used.	 If the only keyword is also
	     specified, this will create a “published (proxy only)” entry.
	     This type of entry is created automatically if arp detects that a
	     routing table entry for hostname already exists.

	     If the reject keyword is specified the entry will be marked so
	     that traffic to the host will be discarded and the sender will be
	     notified the host is unreachable.	The blackhole keyword is simi‐
	     lar in that traffic is discarded but the sender is not notified.
	     These can be used to block external traffic to a host without
	     using a firewall.

	     If the ifscope keyword is specified, the entry will set with an
	     additional property that strictly associate the entry to the
	     interface. This allows for the presence of mutiple entries with
	     the same destination on different interfaces.

     -S hostname ether_addr
	     Is just like -s except any existing ARP entry for this host will
	     be deleted first.

     -f filename
	     Cause the file filename to be read and multiple entries to be set
	     in the ARP tables.	 Entries in the file should be of the form

		   hostname ether_addr [temp] [pub [only]] [ifscope interface]

	     with argument meanings as given above.  Leading whitespace and
	     empty lines are ignored.  A ‘#’ character will mark the rest of
	     the line as a comment.

     -x	     Show extended link-layer reachability information in addition to
	     that shown by the -l flag.

SEE ALSO
     inet(3), arp(4), ifconfig(8), ndp(8)

HISTORY
     The arp utility appeared in 4.3BSD.

BSD				March 18, 2008				   BSD
[top]

List of man pages available for MacOSX

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Tweet
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
...................................................................
Vote for polarhome
Free Shell Accounts :: the biggest list on the net