HP-UX Reference (11i v2 04/09) - 1M System Administration Commands A-M (vol 3)

auto_parms(1M) auto_parms(1M)

NAME

auto_parms - initial system conﬁguration plus DHCP support command

SYNOPSIS

auto_parms

DESCRIPTION

The auto_parms command is a system initialization command that handles ﬁrst-boot conﬁguration,

that is, the setting of unique system "initial identity parameters", and ongoing management of DHCP

lease(s). The auto_parms command is invoked at boot time by the

/sbin/rc command. Initially it

loads a list of available ethernet interfaces and requests a DHCP lease on each interface. It stops when a

valid lease is secured or the list is exhausted.

While checking for availability of a lease on each interface,

auto_parms also consults

/etc/rc.config.d/netconf

and examines the variable DHCP_ENABLE[index]. If it is set to "1",

auto_parms attempts to request a lease on the the interface designated by

index.If

DHCP_ENABLE[index] is set to "0" (the default case) or is absent from

/etc/rc.config.d/netconf

auto_parms does not attempt a DHCP request on that interface.

Once a lease is secured, the information supplied with the lease is used to initialize key networking

parameters; see dhcpdb2conf (1M).

auto_parms detects that the system is undergoing "ﬁrst-boot" (meaning the system’s hostname is not

yet set), it invokes set_parms and geocustoms to verify the DHCP-supplied parameters and to collect

any parameters not supplied by DHCP.

For all subsequent boots, the data supplied by a DHCP lease is assumed by

auto_parms to be correct.

Note that in a (non-mobile) environment where DHCP is used for IP address management, under normal

conditions the lease information should not change between reboots. This is accomplished by

auto_parms placing dhcpclient in "lease maintenance mode" prior to exiting.

EXAMPLES

See

/sbin/rc for invocation context.

FILES

/sbin/auto_parms

The command itself.

/sbin/set_parms.util

Common subroutines used by auto_parms, set_parms, and set_parms sub-area commands.

/etc/auto_parms.log

/etc/auto_parms.log.old

Logﬁles written and saved by auto_parms.

AUTHOR

The

auto_parms command was developed by HP.