rarp(7P) Protocols rarp(7P)NAME
rarp, RARP - Reverse address resolution protocol
DESCRIPTION
You use the RARP protocol to map dynamically between the Internet Protocol (IP) and network interface MAC addresses. RARP is often used to
boot a Solaris client. RARP clients include the SPARC boot PROM, x86 boot floppy, SunOS kernel, and ifconfig(1M). in.rarpd(1M) provides the
server-side implementation.
RARP request timeout behavior in application-layer clients is governed by the /etc/inet/rarp default file. To tune the number of retries an
application attempts before giving up, set the RARP_RETRIES variable in /etc/inet/rarp. If the file is not present or RARP_RETRIES is not
initialized within it, applications retry a maximum of five times with a eight second wait between retries.
FILES
/etc/inet/rarp
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+------------------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+------------------------------------+-----------------------------+
|Interface Stability (protocol) | Standard |
+------------------------------------+-----------------------------+
|Interface Stability (defaults file) | Unstable |
+------------------------------------+-----------------------------+
|Interface Stability (RARP_RETRIES) | Unstable |
+------------------------------------+-----------------------------+
SEE ALSO ifconfig(1M), in.rarpd(1M), arp(7P)
Reverse Address Resolution Protocol RFC 903. June, 1994 R. Finlayson, T. Mann, J.C. Mogul, M. Theimer
SunOS 5.10 8 Nov 2001 rarp(7P)
Check Out this Related Man Page
in.rarpd(1M) System Administration Commands in.rarpd(1M)NAME
in.rarpd, rarpd - DARPA Reverse Address Resolution Protocol server
SYNOPSIS
/usr/sbin/in.rarpd [-d] -a
/usr/sbin/in.rarpd [-d] device unit
DESCRIPTION
in.rarpd starts a daemon that responds to Reverse Address Resolution Protocol (RARP) requests. The daemon forks a copy of itself that runs
in background. It must be run as root.
RARP is used by machines at boot time to discover their Internet Protocol (IP) address. The booting machine provides its Ethernet address
in a RARP request message. Using the ethers and hosts databases, in.rarpd maps this Ethernet address into the corresponding IP address
which it returns to the booting machine in an RARP reply message. The booting machine must be listed in both databases for in.rarpd to
locate its IP address. in.rarpd issues no reply when it fails to locate an IP address.
in.rarpd uses the STREAMS-based Data Link Provider Interface (DLPI) message set to communicate directly with the datalink device driver.
OPTIONS
The following options are supported:
-a Get the list of available network interfaces from IP using the SIOCGIFADDR ioctl and start a RARP daemon process on each interface
returned.
-d Print assorted debugging messages while executing.
EXAMPLES
Example 1 Starting An in.rarpd Daemon For Each Network Interface Name Returned From /dev/ip:
The following command starts an in.rarpd for each network interface name returned from /dev/ip:
example# /usr/sbin/in.rarpd -a
Example 2 Starting An in.rarpd Daemon On The Device /dev/le With The Device Instance Number 0
The following command starts one in.rarpd on the device /dev/le with the device instance number 0.
example# /usr/sbin/in.rarpd le 0
FILES
/etc/ethers File or other source, as specified by nsswitch.conf(4).
/etc/hosts File or other source, as specified by nsswitch.conf(4).
/tftpboot
/dev/ip
/dev/arp
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWbsu |
+-----------------------------+-----------------------------+
SEE ALSO svcs(1), boot(1M), ifconfig(1M), svcadm(1M), ethers(4), hosts(4), netconfig(4), nsswitch.conf(4),attributes(5), smf(5), dlpi(7P)
Finlayson, R., Mann, T., Mogul, J., and Theimer, M., RFC 903, A Reverse Address Resolution Protocol, Network Information Center, SRI Inter-
national, June 1984.
NOTES
The in.rarpd service is managed by the service management facility, smf(5), under the service identifier:
svc:/network/rarp
Administrative actions on this service, such as enabling, disabling, or requesting restart, can be performed using svcadm(1M). The ser-
vice's status can be queried using the svcs(1) command.
SunOS 5.11 20 Aug 2004 in.rarpd(1M)