initrarp(1M)                   DG/UX R4.11MU05                  initrarp(1M)


NAME
       initrarp - initialize ARP table through Reverse Address Resolution
       Protocol

SYNOPSIS
       /usr/bin/initrarp [ -f altdir ] [ -a altpath ]

DESCRIPTION
       Use the initrarp command to initialize an OS server's ARP table.  The
       Address Resolution Protocol (arp(6P)) and the Reverse Address
       Resolution Protocol (rarp(6P)) uses the ARP table to maintain
       Ethernet-to-Internet address translation information for all diskless
       clients.  That information is requested by the server when you boot
       the diskless client.

       The initrarp command searches the /tftpboot directory for diskless
       clients' second-stage bootstraps.  The name of these files are
       hexadecimal representation of clients' Internet addresses.
       Characters after the first eight are ignored.  For every entry in
       /tftpboot, initrarp finds the hostname that corresponds to the
       Internet address and then the Ethernet address of that host.  This
       Ethernet-Internet address pair is then placed as a permanent entry in
       the server's ARP table using the arp command.

       With the -f flag, initrarp uses the directory named altdir instead of
       /tftpboot to scan for second-stage bootstraps.  The -a flag allows
       you to override the arp command used to set the address translation
       entries.  By default, /usr/bin/arp is used.  Usually, these flags
       should not be necessary.

       The initrarp command is automatically invoked by start-up scripts
       when the system comes up to the init 3 level.

       NOTE:   The Internet and Ethernet address of every diskless client
               must be present in the /etc/hosts and /etc/ethers files or in
               the corresponding Network Information Service (NIS) maps.

SEE ALSO
       arp(1M), hosts(4), ethers(4), appropriateprivilege(5),
       capdefaults(5), arp(6P), rarp(6P).

NOTE
       You must have appropriate privilege to execute this command.  For
       systems supporting the DG/UX Capability Option, appropriate privilege
       is defined as having one or more specific capabilities enabled in the
       effective capability set of the user.  See capdefaults(5) for the
       default capabilities for this command.

       On systems without the DG/UX Capability Option, appropriate privilege
       means that your process has an effective UID of root. See the
       appropriateprivilege(5) man page for more information.



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