rarp(6P)                        TCP/IP 5.4.2                        rarp(6P)


NAME
       RARP - Reverse Address Resolution Protocol

DESCRIPTION
       The Reverse Address Resolution Protocol (RARP) is a protocol that
       maps between hardware (Ethernet, token ring, or FDDI) addresses and
       Internet addresses on a local network.  Diskless workstations use
       RARP to obtain an Internet address based on the only parameter known
       at boot time -- an Ethernet address.  The RARP request is broadcast
       on the local network and every server that contains the address
       translation information responds.

       The RARP protocol database (located inside the kernel for TCP/IP for
       AViiON Systems) must contain permanent entries for all diskless
       workstations it wishes to support.  We recommend that, for a given
       server, you keep RARP entries only for those workstations that will
       boot from the server.  The implication is that only the server
       containing the first stage bootstrap for a workstation should respond
       to the RARP request from this workstation.  Note that diskless boot
       is not supported over token ring.

       The system administrator must invoke initrarp each time she or he
       makes changes to the content of the /tftpboot directory.  This
       command, in turn, would invoke the arp(1M) command to set entries
       with corresponding filenames in the /tftpboot directory.

FILES
       /etc/ethers
       /etc/hosts

SEE ALSO
       ethers(4), hosts(4), arp(6P), arp(1M).

























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