DHCP - Revision history

Jimbo at 13:49, 13 October 2007

2007-10-13T13:49:16Z

DrModiford: Added See Also to reference WINS as a option of DHCP

2007-10-13T03:44:59Z

Added See Also to reference WINS as a option of DHCP

Dave: /* Software */

2007-01-29T20:59:56Z

Software

Dave: /* Software */

2007-01-29T20:58:11Z

Software

Dave: /* Software */

2007-01-29T20:58:00Z

Software

Dave: /* Configuration */

2007-01-29T20:54:05Z

Configuration

Dave: /* Configuration */

2007-01-29T20:46:36Z

Configuration

Dave: /* Configuration */

2007-01-29T20:40:31Z

Configuration

Jimbo: minor formatting / typo cleanup

2007-01-23T17:13:52Z

minor formatting / typo cleanup

Dave: /* Configuration */

2007-01-23T15:31:11Z

Configuration

@@ Line 175: / Line 175: @@
 == See Also ==
-The DHCP service can be configured to supply hosts with the network addresses of local [[WINS]] service servers, which are used for hostname to IP resolution.
+The DHCP service can be configured to supply hosts with the network addresses of local [[WINS]] service servers, which are used to resolve NetBIOS names to IP addresses.
 [[Category:FreeBSD for Servers]]

@@ Line 172: / Line 172: @@
   Starting dhcpd.
   dhcp-1#
 [[Category:FreeBSD for Servers]]

← Older revision		Revision as of 20:59, 29 January 2007
Line 20:		Line 20:

	4. http://webmin.com		4. http://webmin.com
		+
		+	5. http://sauron.jyu.fi/

	== Configuration ==		== Configuration ==

← Older revision		Revision as of 20:58, 29 January 2007
Line 12:		Line 12:

	There are a few other configuration UIs for ISC's DHCP, see		There are a few other configuration UIs for ISC's DHCP, see
		+
	1. http://webdhcp.sourceforge.net/		1. http://webdhcp.sourceforge.net/

← Older revision		Revision as of 20:58, 29 January 2007
Line 8:		Line 8:

	The most common unix implementation of the DHCP service is the [[ISC]]'s [[DHCP]]; Microsoft has their own implementation, as does Sun Microsystems.		The most common unix implementation of the DHCP service is the [[ISC]]'s [[DHCP]]; Microsoft has their own implementation, as does Sun Microsystems.
		+
		+	Configuring DHCP, like [[BIND]], is not horribly difficult but it can be a pain; consider using [[Webmin]] to help configure the software.
		+
		+	There are a few other configuration UIs for ISC's DHCP, see
		+	1. http://webdhcp.sourceforge.net/
		+
		+	2. http://freshmeat.net/projects/maintain/
		+
		+	3. http://sourceforge.net/projects/dixie/
		+
		+	4. http://webmin.com

	== Configuration ==		== Configuration ==

@@ Line 18: / Line 18: @@
 general config
 options
 subnets
 shared-networks
 from the FAQ:
@@ Line 52: / Line 58: @@
     fixed-address 192.168.1.222;
+}
 </pre>

@@ Line 38: / Line 38: @@
     range 192.168.1.150 192.168.1.200;
+}
 This will result in DHCP server giving a client an IP address from the range 192.168.1.10-192.168.1.100 or 192.168.1.150-192.168.1.200. It will lease an IP address for 600 seconds if the client doesn't ask for specific time frame. Otherwise the maximum (allowed) lease will be 7200 seconds. The server will also "advise" the client that it should use 255.255.255.0 as its subnet mask, 192.168.1.255 as its broadcast address, 192.168.1.254 as the router/gateway and 192.168.1.1 and 192.168.1.2 as its DNS servers.
 If you need to specify a WINS server for your Windows clients you will need to include the netbios-name-servers option e.g.
+<pre>
 option netbios-name-servers 192.168.1.1;
+</pre>
 You can also assign specific IP addresses based on clients ethernet address e.g.
+<pre>
 host haagen {
     hardware ethernet 08:00:2b:4c:59:23;

← Older revision		Revision as of 20:40, 29 January 2007
Line 11:		Line 11:
	== Configuration ==		== Configuration ==

−	(~~placeholder~~...~~needs info~~ on ~~hosts~~, ~~networks, shared~~-~~networks~~ and the ~~different~~ options)	+	The /etc/dhcpd.conf (or /usr/local/etc/dhcpd.conf) file sets the configuration that will be handed to your clients. Things you need to know:
		+	- the interface that will be receiving the DHCP requests must also be on the same network that it will be handing out. If you're handing out 192.168.1.0/24 addresses on your hme0 interface, your hme0 interface must have an address in that /24 network.
		+	- any general statements / config options can be made globally and limited to a specific network; the network-specific options will trump the general options usually.
		+
		+	You will need to define the following sections:
		+
		+	general config
		+	options
		+	subnets
		+	shared-networks
		+
		+	from the FAQ:
		+	<pre>
		+	# Sample /etc/dhcpd.conf
		+	# (add your comments here)
		+	default-lease-time 600;
		+	max-lease-time 7200;
		+	option subnet-mask 255.255.255.0;
		+	option broadcast-address 192.168.1.255;
		+	option routers 192.168.1.254;
		+	option domain-name-servers 192.168.1.1, 192.168.1.2;
		+	option domain-name "mydomain.org";
		+
		+	subnet 192.168.1.0 netmask 255.255.255.0 {
		+	range 192.168.1.10 192.168.1.100;
		+	range 192.168.1.150 192.168.1.200;
		+	}
		+
		+	This will result in DHCP server giving a client an IP address from the range 192.168.1.10-192.168.1.100 or 192.168.1.150-192.168.1.200. It will lease an IP address for 600 seconds if the client doesn't ask for specific time frame. Otherwise the maximum (allowed) lease will be 7200 seconds. The server will also "advise" the client that it should use 255.255.255.0 as its subnet mask, 192.168.1.255 as its broadcast address, 192.168.1.254 as the router/gateway and 192.168.1.1 and 192.168.1.2 as its DNS servers.
		+
		+	If you need to specify a WINS server for your Windows clients you will need to include the netbios-name-servers option e.g.
		+
		+	option netbios-name-servers 192.168.1.1;
		+
		+	You can also assign specific IP addresses based on clients ethernet address e.g.
		+
		+	host haagen {
		+	hardware ethernet 08:00:2b:4c:59:23;
		+	fixed-address 192.168.1.222;
		+	}
		+
		+	</pre>

@@ Line 25: / Line 25: @@
 copy /usr/local/etc/dhcpd.conf.sample to /usr/local/etc/dhcpd.conf
-edit /usr/local/etc/dhcpd.conf aas apropriate:.
+edit /usr/local/etc/dhcpd.conf as apropriate:.
-<pre>
+ # dhcpd.conf
 # dhcpd.conf
+ # Sample configuration file for ISC dhcpd
 # Sample configuration file for ISC dhcpd
-−
+ # option definitions common to all supported networks...
-# option definitions common to all supported networks...
+ #option domain-name "example.org";
-#option domain-name "example.org";
+ #option domain-name-servers ns1.example.org, ns2.example.org;
-#option domain-name-servers ns1.example.org, ns2.example.org;
+ # lease times are measured in seconds:
-# lease times are measured in seconds:
+ default-lease-time 3600;
-default-lease-time 3600;
+ max-lease-time 86400;
 max-lease-time 86400;
+ # If this DHCP server is the official DHCP server for the local
-# If this DHCP server is the official DHCP server for the local
+ # network, the authoritative directive should be uncommented.
-# network, the authoritative directive should be uncommented.
+ authoritative;
 authoritative;
+ # ad-hoc DNS update scheme - set to "none" to disable dynamic DNS updates.
-# ad-hoc DNS update scheme - set to "none" to disable dynamic DNS updates.
+ ddns-update-style none;
 ddns-update-style none;
+ # Use this to send dhcp log messages to a different log file (you also
-# Use this to send dhcp log messages to a different log file (you also
+ # have to hack syslog.conf to complete the redirection).
-# have to hack syslog.conf to complete the redirection).
+ log-facility local7;
 log-facility local7;
+ # No service will be given on this subnet, but declaring it helps the
-# No service will be given on this subnet, but declaring it helps the
+ # DHCP server to understand the network topology.
 # DHCP server to understand the network topology.
+ # This is a very basic subnet declaration.
 # This is a very basic subnet declaration.
+ subnet 192.168.1.0 netmask 255.255.255.0 {
-subnet 192.168.1.0 netmask 255.255.255.0 {
+   range 192.168.1.10 192.168.1.20;
-  range 192.168.1.10 192.168.1.20;
-−
-</pre>
 ====Create the leases file====
-<pre>
+ # touch /var/db/dhcpd.leases
 # touch /var/db/dhcpd.leases
-</pre>
 ====Restart the daemon====
-<pre>
+ # killall dhcpd
-# killall dhcpd
+ # dhcpd
 # dhcpd
-</pre>
 ====Setup to run on reboot====
 Add to /etc/rc.conf
-<pre>
+ dhcpd_enable="YES"
 dhcpd_enable="YES"
-</pre>
 == Problems starting dhcpd ==

← Older revision		Revision as of 15:31, 23 January 2007
Line 13:		Line 13:
	(placeholder...needs info on hosts, networks, shared-networks and the different options)		(placeholder...needs info on hosts, networks, shared-networks and the different options)

−	~~===DHCP - Install and setup===~~

	====Installation====		====Installation====