Example - DHCP Configuration for Two Networks

Last updated on 2020-04-23 05:08:54

The following article provides an overview of how to configure DHCP for an example environment. It provides steps and example settings to configure a DHCP service for an environment that contains two networks with three different IP pools.

Example Environment

For the example environment that is displayed in the following figure, a DHCP service must configured for two networks with three different IP pools:

Network 1 (10.0.8.0/24) – Contains two address pools: one pool for unknown clients and one pool for known clients (identified via their MAC addresses).
Network 2 (10.0.4.0/24) – Contains one address pool for unknown clients and two known clients.

Example Environment Configuration

The DHCP service for the example environment can be configured with the following steps and settings:

Step

Settings for Example Environment

Step 1: Introduce IP addresses for the DHCP service

On the Box > Network page, click IP Configuration from the Configuration Mode menu in the left navigation pane. In the Shared networks and IPs section, click + and add the following addresses:

eth0: 10.0.8.35
eth1: 10.0.4.44

Step 2: Create the DHCP service

By default, Service Availability for the DHCP service is set to All-IPs.

Step 3: Enable advanced DHCP settings.

To enable the advanced DHCP settings, you must be in the Advanced Configuration mode. On the DHCP Enterprise Configuration - Operational Setup page , click Switch to Advanced View from the Configuration Mode menu in the left navigation pane. Make sure that you select yes from the Use Advanced Pool Configuration list .

Step 4: Configure DHCP classes.

A DHCP class named testclass is created with the following settings:

Match Type: MAC
Match Value List: 1:00:01:f3:34:44:2g and 1:00:01:f3:34:44:2e
For Ethernet interfaces, you must enter 1: before the MAC address

Step 5: Configure subnets and address pools.

Two separate subnets are created for Network 1 (10.0.8.0/24) and Network 2 (10.0.4.0/24).

A subnet named Subnet1 for 10.0.8.0/24 is created with the following settings:

Subnet Type: explicit
Network Address: 10.0.8.0/24

Address Pools: The two address pools for Subnet1 are configured with the following settings:

Address Pool	Description
Address Pool 1 - Unknown	From the first address pool, only unknown clients may receive IP addresses. This address pool is configured with the following settings: IP Begin: 10.0.8.10 IP End: 10.0.8.15 Denied Classes: testclass Known Clients: deny Unknown Clients: allow
Address Pool 2 - Classpool	From the second address pool, only allowed classes may receive IP addresses. This address pool is configured with the following settings: IP Begin: 10.0.8.20 IP End: 10.0.8.30 Allowed Classes: testclass Known Clients: not-set BOOTP Clients Policy: not-set

A subnet named Subnet2 for 10.0.4.0/24 is created with the following settings:

Subnet Type: explicit
Network Address: 10.0.4.0/24

Address Pools: The subnet has one address pool which is configured with the following settings:

Address Pool	Description
Address Pool 1 - Unknown	From the address pool, only unknown clients may receive IP addresses. This address pool is configured with the following settings: IP Begin: 10.0.4.10 IP End: 10.0.4.15 Known Clients: deny Unknown Clients: allow

Step 6: Configure known clients.

Two client groups are created:

Client Group	Settings
Known Client 1	MAC Address: 00:01:f3:34:44:2g Fixed IP Address: 10.0.4.31 (Optional)
Known Client 2	MAC Address: 00:01:f3:34:44:2e Fixed IP Address: 10.0.4.32 (Optional)

Step 7: View real-time information for the DHCP service.

To view and modify lease and IP range information for the DHCP service, click the DHCP tab.