NAME

arp − address resolution display and control

SYNOPSIS

arp hostname
arp −a [system] [core]
arp −d hostname
arp −s hostname address [temp] [pub] [trail] [rif rifAddress]
arp −f filename

DESCRIPTION

arp displays and modifies the Internet-to-Ethernet address translation tables used by the Address Resolution Protocol. 

OPTIONS

none If no options are specified (first form above), arp displays the current ARP entry for hostname. The hostname must either appear in the hostname database (see hosts(4)), or be a DARPA Internet address expressed in Internet standard “dot notation”. 

−a Display all current ARP entries by reading the table from file core (default /dev/kmem) based on the kernel file system (default /hp-ux). 

−d If an ARP entry exists for the host called hostname, delete it. This requires super-user privileges.

−s Create an ARP entry for the host called hostname with the hardware station address address.  The hardware station address is given as six hexadecimal bytes separated by colons.  If an ARP entry already exists for hostname, the existing entry is updated with the new information. The entry is permanent unless the word temp is given in the command.  If the word pub is specified, the entry is published, which means that this system will act as an ARP server responding to requests for hostname even though the host address is not its own.  The word trail indicates that trailer encapsulations can be sent to this host.  The word rif specifies source routing information used for token ring networks.  This information allows a user to specify the paticular bridge route which the token ring packet should be delivered.  rifAddress is given as an even number of hexadecimal bytes separated by colons, up to a maximum of 16 bytes.  This requires super-user privileges. 

−f Read file filename and set multiple entries in the ARP tables.  Entries in the file should be of the form:

hostname address [temp] [pub] [trail] [rif rifAddress]

Argument meanings are the same as for the −s option. 

AUTHOR

arp was developed by the University of California, Berkeley. 

WARNINGS

HP 9000 systems can receive trailer packets but do not send them.  Setting the trailers flag has no effect. 

SEE ALSO

ifconfig(1M), inet(3N), lanconfig(1M), arp(7P). 

Hewlett-Packard Company  —  HP-UX Release 9.10: April 1995