The DHCP (Dynamic Host Configuration Protocol) service enables you to automate the process of assigning network settings to clients in the local network. In a network with a DHCP server, each network device can be dynamically assigned an IP address, gateway address, and DNS.
NGFW can also function as a DHCP relay by forwarding DHCP requests from clients located in different networks to a central DHCP server. For more details on configuring DHCP relay, see the Network Interface Configuration section.
In NGFW, you can create several IP address ranges to be assigned by DHCP. DHCP runs independently on each HA cluster node. To ensure the high availability of the DHCP service in a cluster, DHCP should be configured on both nodes with non-overlapping IP address ranges.
To add a DHCP range, click Add and provide these settings:
|
Name |
Description |
|---|---|
|
Enabled |
Enables or disables the use of this DHCP range. |
|
Node |
The cluster node on which the range is being created. |
|
Interface |
Interface of the server which will assign IP addresses from the range being created. |
|
IP range |
The IP address range assigned to DHCP clients. |
|
Mask |
The subnet mask assigned to DHCP clients. |
|
Lease time |
The duration in seconds for which IP addresses are assigned. |
|
Domain |
The domain name assigned to DHCP clients. |
|
Gateway |
The gateway IP address assigned to DHCP clients. |
|
Name servers |
The DNS server IP addresses assigned to DHCP clients. |
|
Reserved hosts |
The MAC addresses and the associated IP addresses. |
|
Ignored MAC |
List of MAC addresses ignored by the DHCP server. |
|
DHCP PXE boot |
The server address and boot file name returned in response to a PXE boot request. |
|
DHCP options |
Option number and value. For the list of available options, see DHCP Options. |
The assigned IP addresses are displayed in the Addresses pane. The administrator can release any leased IP address by selecting it and clicking Release.