config system dhcpserver

Description: Configure DHCP servers.

config system dhcpserver

edit <name>

set status [enable | disable | backup]

set lease-time [300 – 8640000]

set dns-service [default | specify | wan-dns | local]

set dns-server1 {ipv4-address} *available when dns-service is set to specify

set dns-server2 {ipv4-address} *available when dns-service is set to specify

set dns-server3 {ipv4-address} *available when dns-service is set to specify

set ntp-service [local | default| specify]

set ntp-server1 {ipv4-address}

set ntp-server2 {ipv4-address}

set ntp-server3 {ipv4-address}

set *default-gateway {ipv4-address}

set *netmask {netmask}

set *interface <name1>

set *start-ip {ipv4-address}

set *end-ip {ipv4-address}

set mtu [512 – 9000]

set reserved-address [enable | disable]

unset

Sample command:

config system dhcpserver
    edit 1
        set status enable
        set lease-time 86400
        set dns-service default
        set ntp-service specify
        set ntp-server1
        set ntp-server2
        set ntp-server3
        set default-gateway 192.168.200.99
        set netmask 255.255.255.0
        set interface port4
        set start-ip 192.168.200.110
        set end-ip 192.168.200.210
        set mtu 1500
        set reserved-address disable
    next
end

Parameter	Description	Type	Size	Default
status	Status of the DHCP configuration.	option	-	enable
	Option Description enable Enable the DHCP server. disable Disable the DHCP server. backup Enable in VRRP backup mode. (Note: The DHCP server is launched only when the VRRP primary goes down.)
lease-time	Lease time in seconds. 0 means unlimited.	integer	300 - 8640000	86400
dns-service	Options for assigning DNS servers to DHCP clients.	Option	-	default
	Option Description local The IP address of the interface of the DHCP server that is added becomes the clients' DNS server IP address. default Clients are assigned the FortiExtender configured DNS server. specify Specify up to three DNS servers in the DHCP server configuration. wan-dns Use the WAN port DNS server. The DNS of the WAN interface that is added becomes clients' DNS server IP address.
dns-server1	Specify the IP address of DNS Server 1. Available when dns-service is set to specify.	IPv4 address	-	none
dns-server2	Specify the IP address of DNS Server 2. Available when dns-service is set to specify.	IPv4 address	-	none
dns-server3	Specify the IP address of DNS Server 3. Available when dns-service is set to specify.	IPv4 address	-	none
ntp-service	Options for assigning Network Time Protocol (NTP) servers to DHCP clients.	option
	Option Description local The IP address of the interface of the DHCP server that is added becomes clients' NTP server IP address. default Clients are assigned the FortiExtender configured NTP servers. specify Specify up to three NTP servers.
ntp-server1	Specify the IP address of NTP Server 1. Available when ntp-service is set to specify.	IPv4 address	-	none
ntp-server2	Specify the IP address of NTP Server 2. Available when ntp-service is set to specify.	IPv4 address	-
ntp-server3	Specify the IP address of NTP Server 3. Available when ntp-service is set to specify.	IPv4 address	-
default-gateway	Default gateway IP address assigned by the DHCP server.	IPv4 address	-	none
netmask	Network mask assigned by the DHCP server.	string	-	none
interface	DHCP server can assign IP configurations to clients connected to this interface.	option	-	none
	Option Description lan LAN as the DHCP server interface. lo Loopback as the DHCP server interface. wan WAN as the DHCP server interface. port4 Port 4 as the DHCP server interface.
start-ip	Specify the start IP address of the DHCP IP address range. For example, 192.168.1.100.	IPv4 address	-	none
end-ip	Specify the end IP address of the DHCP IP address range. For example, 192.168.1.120.	IPv4 address	-	none
mtu	Sepcify the client's MTU size.	integer	512 - 9000	1500
reserved-address	Status of reserved address and MAC mapping.	Option	-	disable
	Option Description enable Enable the reserved address option by configuring the IP, MAC, and action as reserved or block. disable Disable the reserved address option.

• config reserved-address