DHCP Failover Config File

DHCP Failover: Primary

DHCP Configuration
======================================================================

Primary Server
======================================================================
#dhcpd.conf

authoritative;
option domain-name      	"localdomain.dx";
option domain-name-servers      192.168.10.11, 192.168.10.12;

default-lease-time     		600;
max-lease-time          	7200;

# fail over configuration

failover peer "dhcp-backup" {                                 
         primary;                                          # This is the primary
         address 192.168.1.11;                             # This DHCP Server IP Address
         port 647;
         peer address 192.168.10.12;                       # Secondary DHCP Server ip address
         peer port 647;
         max-response-delay 60;
         max-unacked-updates 10;
         load balance max seconds 3;
}


subnet 192.168.10.0 netmask 255.255.255.0 {
        option  domain-name     	"localdomain.dx";
        option  domain-name-servers     192.168.10.11, 192.168.10.12;
        option  broadcast-address       192.168.10.255;
        option  routers 		192.168.10.1;
	pool {
		failover peer "dhcp-backup";
		range 192.168.10.201 192.168.10.230;
        	default-lease-time      	6000;
        	max-lease-time  		72000;
	}
}

#Static Lease Configuration

host ns1 {
       hardware ethernet 00:80:33:c3:EE:AA;
       fixed-address 192.168.10.11;
}

=======================================================================
DHCP Lease Database Check
=======================================================================
cat /var/lib/dhcpd/dhcpd.leases

DHCP Failover: Secondary

====================================================================================
Secondary Server
====================================================================================

#dhcpd.conf

authoritative;
option domain-name      	"nlocaldomain.dx";
option domain-name-servers      192.168.10.11, 192.168.10.12;

default-lease-time     		600;
max-lease-time          	7200;

# fail over configuration

failover peer "dhcp-backup" {                                 
         secondary;                                        # This is the secondary
         address 192.168.1.12;                             # This DHCP Server IP Address
         port 647;
         peer address 192.168.10.11;                       # Primary DHCP Server ip address
         peer port 647;
         max-response-delay 60;
         max-unacked-updates 10;
         load balance max seconds 3;
}


subnet 192.168.10.0 netmask 255.255.255.0 {
        option  domain-name     	"nlocaldomain.dx";
        option  domain-name-servers     192.168.10.11, 192.168.10.12;
        option  broadcast-address       192.168.10.255;
        option  routers 		192.168.10.1;
	pool {
		failover peer "dhcp-backup";
		range 192.168.10.201 192.168.10.230;
        	default-lease-time      	6000;
        	max-lease-time  		72000;
	}
}