Zentyal DHCP configuration

[root@zentyal]:~# vim /etc/dhcp/dhcpd.conf

option domain-name-servers 127.0.0.1, 125.22.47.125;

default-lease-time 1800;

max-lease-time 7200;

shared-network eth0 {                       

        subnet 192.168.1.0 netmask 255.255.255.0 {

            option routers 192.168.1.1;

                option domain-name "example.com";

            option domain-name-servers 192.168.1.127, 125.22.47.125;

                option ntp-servers 192.168.1.13;

                default-lease-time 1200;

                max-lease-time 6200;

pool {

                range 192.168.1.20 192.168.1.30;

            }

            pool {

                range 192.168.1.31 192.168.1.40;

            }

}

group {

            option routers 192.168.1.1;

                option domain-name "example.com";

            option domain-name-servers 192.168.1.127, 125.22.47.125;

                option ntp-servers 192.168.1.13;

                default-lease-time 1200;

                max-lease-time 6200;

           group {

                   host rhellaptop {

                          hardware ethernet  00:1C:23:4C:3B:25;

                          fixed-address 192.168.1.14;

                          }

           }

        }

}

These all configurations are supplied here by doing changes in the GUI of Zentyal:

Now got to Infrastructure -> DHCP.

Now click on “Configuration” icon.

Now, in the first tab “Common options”, you can define

Default gateway,

Search domain,

Primary nameserver,

Secondary nameserver,

NTP server

Now click on “change”.

Scroll down:

To add IP ranges,

Click on “Add”

Give it a name so that it could be recognized.

Give “from” and “to” range of the IP range and click “add”.

In the next pane it would be showing the ranges which you have added. You can “edit” and “delete” them too.

Scroll down.

Now, to add “fixed addresses”, go to Networking -> objects.

Click on “add”.

I already have added an object named “systems”.

You need to give a name for the object and save it.

Now add a member in it.

Give the name of the member.

IP address.

And MAC address of the system.

And click “change.”

Now on the upper right corner of the page , click on the “save” button near logout button and follow the screen.

Now again go to Infrastructure -> DHCP

And see the section “Fixed addresses”.

Here you will automatically find the already added object name.

And click on “Add” button.

And save the changes in the upper right corner of the page, click on the “save” button near logout button and follow the screen.

Now open the console and open the file:

# vim /etc/dhcp/dhcpd.conf

 And you will find the configured file.

When dhcpd is running it will generate entries in the file: /var/lib/dhcp/dhcpd.leases:

lease 192.168.1.128 {

starts 2 2004/12/01 20:07:05;

ends 3 2004/12/02 08:07:05;

hardware ethernet 00:00:e8:4a:2c:5c;

uid 01:00:00:e8:4c:5d:31;

client-hostname "Node1";

}