dhcpconfig(1M) System Administration Commands dhcpconfig(1M)NAMEdhcpconfig - DHCP service configuration utility
SYNOPSISdhcpconfig-D -r resource -p path [-u uninterpreted]
[-l lease_length] [-n ] [-d DNS_domain]
[-a DNS_server_addresses] [-h hosts_resource]
[-y hosts_domain]
dhcpconfig-R server_addresses
dhcpconfig-U [-f] [-x] [-h]
dhcpconfig-N network_address [-m subnet_mask] [-b ]
[-t router_addresses] [-y NIS-domain]
[-a NIS_server_addresses] [-g]
dhcpconfig-C -r resource -p path [-f] [-k]
[-u uninterpreted]
dhcpconfig-X filename [-m macro_list] [-o option_list]
[-a network_addresses] [-f] [-x] [-g]
dhcpconfig-I filename [-f] [-g]
dhcpconfig-P [parameter[=value],]...
dhcpconfig-S [-f] [-e | -d | -r | -q]
DESCRIPTION
The dhcpconfig command is used to configure and manage the Dynamic Host
Configuration Protocol (DHCP) service or BOOTP relay services. It is
intended for use by experienced Solaris system administrators and is
designed for ease of use in scripts. The dhcpmgr utility is recommended
for less experienced administrators or those preferring a graphical
utility to configure and manage the DHCP service or BOOTP relay ser‐
vice.
The dhcpconfig command can be run by root, or by other users assigned
to the DHCP Management profile. See rbac(5) and user_attr(4).
dhcpconfig requires one of the following function flags: -D, -R, -U,
-N, -C, -X, -I, -P or -S.
The dhcpconfig menu driven mode is supported in Solaris 8 and previous
versions of Solaris.
Where dhcpconfig Obtains Configuration Information
dhcpconfig scans various configuration files on your Solaris machine
for information it can use to assign values to options contained in
macros it adds to the dhcptab configuration table. The following table
lists information dhcpconfig needs, the source used, and how the infor‐
mation is used:
┌───────────────┬───────────────────────────────────────┬───────────────────────┐
│Information │ Source │ Where Used │
├───────────────┼───────────────────────────────────────┼───────────────────────┤
│Timezone │ System date, timezone settings │ Locale macro │
│DNS parameters │ nsswitch.conf, /etc/resolv.conf │ Server macro │
│NIS parameters │ System domainname, nsswitch.conf, NIS │ Network macros │
│Subnetmask │ Network interface, netmasks table in │ Network macros │
│ │ nameservice │ │
└───────────────┴───────────────────────────────────────┴───────────────────────┘
If you have not set these parameters on your server machine, you should
do so before configuring the DHCP server with dhcpconfig. Note that if
you specify options with the dhcpconfig-D command line, the values you
supply override the values obtained from the system files.
OPTIONS
The following options are supported:
-C Convert to using a new data store, recreating
the DHCP data tables in a format appropriate to
the new data store, and setting up the DHCP
server to use the new data store.
The following sub-options are required:
-p path_to_data The paths for SUNWfiles and
SUNWbinfiles must be abso‐
lute UNIX pathnames. See
dhcp_modules(5).
-r data_resource New data store resource. One
of the following must be
specified: SUNWfiles or SUN‐
Wbinfiles. See dhcp_mod‐
ules(5).
The following sub-options are optional:
-f Do not prompt for confirma‐
tion. If -f is not used, a
warning and confirmation
prompt are issued before the
conversion starts.
-k Keep the old DHCP data
tables after successful con‐
version. If any problem
occurs during conversion,
tables are not deleted even
if -k sub-option is not
specified.
-u uninterpreted Data which is ignored by
dhcpconfig, but passed on to
the datastore for interpre‐
tation. The private layer
provides for module-specific
configuration information
through the use of the
RESOURCE_CONFIG keyword.
Uninterpreted data is stored
within RESOURCE_CONFIG key‐
word of dhcpsvc.conf(4). The
-u sub-option is not used
with the SUNWfiles and SUN‐
Wbinfiles data stores. See
dhcp_modules(5).
-D Configure the DHCP service.
The following sub-options are required:
-r data_resource One of the following must be
specified: SUNWfiles or SUN‐
Wbinfiles. Other data stores
may be available. See
dhcp_modules(5).
-p path The paths for SUNWfiles and
SUNWbinfiles must be abso‐
lute UNIX pathnames. See
dhcp_modules(5).
The following sub-options are optional:
-a DNS_servers IP addresses of DNS
servers, separated with
commas.
-d DNS_domain DNS domain name.
-h hosts_resource Resource in which to place
hosts data. Usually, the
name service in use on the
server. Valid values are
files or dns.
-l seconds Lease length used for
addresses not having a
specified lease length, in
seconds.
-n Non-negotiable leases
-y hosts_domain DNS domain name to be used
for hosts data. Valid only
if dns is specified for -h
sub-option.
-u uninterpreted Data which is ignored by
dhcpconfig, but passed on
to the datastore for inter‐
pretation. The private
layer provides for module-
specific configuration
information through the use
of the RESOURCE_CONFIG key‐
word. Uninterpreted data is
stored within RESOURCE_CON‐
FIG keyword of
dhcpsvc.conf(4). The -u
sub-option is not used with
the SUNWfiles and SUNWbin‐
files data stores. See
dhcp_modules(5).
-I filename Import data from filename, containing data pre‐
viously exported from a Solaris DHCP server.
Note that after importing, you may have to edit
macros to specify the correct domain names, and
edit network tables to change the owning server
of addresses in imported networks. Use dhtadm
and pntadm to do this.
The following sub-options are supported:
-f Replace any conflicting data with the data
being imported.
-g Signal the daemon to reload the dhcptab
once the import has been completed.
-N net_address Configure an additional network for DHCP ser‐
vice.
The following sub-options are supported:
-a NIS_server_addresses List of IP addresses
of NIS servers.
-b Network is a point-
to-point (PPP) net‐
work, therefore no
broadcast address
should be configured.
If -b is not used,
the network is
assumed to be a LAN,
and the broadcast
address is determined
using the network
address and subnet
mask.
-g Signal the daemon to
reload the dhcptab.
-m xxx.xxx.xxx.xxx Subnet mask for the
network; if -m is not
used, subnet mask is
obtained from net‐
masks.
-t router_addresses List of router IP
addresses; if not
specified, router
discovery flag is
set.
-y NIS_domain_name If NIS is used on
this network, specify
the NIS domain name.
-P Configure the DHCP service parameters. Each
parameter and value are specified by the follow‐
ing pattern:
parameter[=value],...
Where parameter and value are:
parameter One of the DHCP service parameters
listed in dhcpsvc.conf(4). If the
corresponding value is not speci‐
fied, the current parameter value
is displayed. If parameter is not
specified, all parameters and cur‐
rent values are displayed.
value Optional string to set the servers
parameter to if the value is
acceptable. If the value is missing
or is empty (""), the parameter and
its current value are deleted.
After a parameter has changed the DHCP server
requires re-starting before you can use new
parameter values.
-R server_addresses Configure the BOOTP relay service. BOOTP or DHCP
requests are forwarded to the list of servers
specified.
server_addresses is a comma separated list of
hostnames and/or IP addresses.
-S Control the DHCP service.
The following sub-options are supported:
-d Disable and stop the DHCP service.
-e Enable and start the DHCP service.
-q Display the state of the DHCP service. The
state is encoded into the exit status.
0 DHCP service disabled and stopped
1 DHCP service enabled and stopped
2 DHCP service disabled and running
3 DHCP service enabled and running
-r Enable and restart the DHCP service.
-U Unconfigure the DHCP service or BOOTP relay ser‐
vice.
The following sub-options are supported:
-f Do not prompt for confirmation. If -f is
not used, a warning and confirmation
prompt is issued.
-h Delete hosts entries from name service.
-x Delete the dhcptab and network tables.
-X filename Export data from the DHCP data tables, saving to
filename, to move the data to another Solaris
DHCP server.
The following sub-options are optional:
-a networks_to_export List of networks whose
addresses should be
exported, or the key‐
word ALL to specify all
networks. If -a is not
specified, no networks
are exported.
-g Signal the daemon to
reload the dhcptab
after the export has
been completed.
-m macros_to_export List of macros to
export, or the keyword
ALL to specify all
macros. If -m is not
specified, no macros
are exported.
-o options_to_export List of options to
export, or the keyword
ALL to specify all
options. If -o is not
specified, no options
are exported.
-x Delete the data from
this server after it is
exported. If -x is not
specified you are in
effect copying the
data.
EXAMPLES
Example 1 Configuring DHCP Service with Binary Files Data Store
The following command configures DHCP service, using the binary files
data store, in the DNS domain acme.eng, with a lease time of 28800 sec‐
onds (8 hours),
example# dhcpconfig-D -r SUNWbinfiles -p /var/dhcp -l 28800\
-d acme.eng -a 120.30.33.4 -h dns -y acme.eng
Example 2 Configuring BOOTP Relay Agent
The following command configures the DHCP daemon as a BOOTP relay
agent, which forwards BOOTP and DHCP requests to the servers having the
IP addresses 120.30.33.7 and 120.30.42.132:
example# dhcpconfig-R 120.30.33.7,120.30.42.132
Example 3 Unconfiguring DHCP Service
The following command unconfigures the DHCP service, with confirmation,
and deletes the DHCP data tables and host table entries:
example# dhcpconfig-U -x -h
Example 4 Configuring a Network for DHCP Service
The following command configures an additional LAN network for DHCP
service, specifying that clients should use router discovery and pro‐
viding the NIS domain name and NIS server address:
example# dhcpconfig-N 120.30.171.0 -y east.acme.eng.com\
-a 120.30.33.4
Example 5 Exporting a Network, Macros, and Options from a DHCP Server
The following command exports one network (120.30.171.0) and its
addresses, the macro 120.30.171.0, and the options motd and PSptrfrom a
DHCP server, saves the exported data in file
/export/var/120301710_data, and deletes the exported data from the
server.
example# dhcpconfig-X /var/dhcp/120301710_export
-a 120.30.171.0 -m 120.30.171.0 -o motd,PSptr
Example 6 Importing Data on a DHCP Server
The following command imports DHCP data from a file,
/net/golduck/export/var/120301710_data, containing data previously
exported from a Solaris DHCP server, overwrites any conflicting data on
the importing server, and signals the daemon to reload the dhcptab once
the import is completed:
example# dhcpconfig-I /net/golduck/export/var/120301710_data -f -g
Example 7 Setting DHCP Server Parameters
The following command sets the number of minutes that the DHCP server
waits before timing out when updating DNS information on DHCP clients
to five minutes.
example# example# dhcpconfig-P UPDATE_TIMEOUT=5
Example 8 Re-starting the DHCP server
The following command stops and re-starts the DHCP server.
example# example# dhcpconfig-S -r
DHCP server stopped
DHCP server started
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Availability │service/network/dhcp │
├─────────────────────────────┼─────────────────────────────┤
│Interface Stability │Committed │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOdhcpmgr(1M), dhtadm(1M), in.dhcpd(1M), pntadm(1M), dhcp_network(4),
dhcptab(4), dhcpsvc.conf(4), nsswitch.conf(4), resolv.conf(4),
user_attr(4), attributes(5), dhcp(5), dhcp_modules(5), rbac(5)SunOS 5.11 11 Dec 2009 dhcpconfig(1M)
