Configuring DHCP/IPAM

Universal DDI provides global parameters that can assist you in streamlining the management of your IP scopes and networks. You can set parameters to control how the DHCP server responds to lease requests for clients and hardware. When you choose to deny the lease requests, the application does not assign IP addresses to the clients and hardware that are defined in the list. You can also configure the DHCP server to assign or deny IP addresses to unknown DHCP clients. You can configure DHCP options that provide specific configuration and service information to DHCP clients. These options appear as variable-length fields at the end of the DHCP messages that DHCP servers and clients exchange. You can enable thresholds for DHCP utilization. This allows you to be notified if the DHCP utilization goes above or below a certain percentage. The DHCP server can send dynamic updates to an external primary server that you specify. For each IP space, you can specify the zone to be updated and the IP address of the primary server for that zone. 

The following diagram explains the high-level steps to configure DHCP:

All the settings for DHCP are stored in the Global DHCP Properties. When creating a DHCP Config Profile (specific to a service instance), some settings are inherited from the Global DHCP Properties by default. Also, you can choose to Inherit or Override some settings from Global DHCP Properties. For more information, see Configuring Global DHCP Properties on how to configure Global DHCP Configuration.

The following steps guide you through the process of configuring DHCP. You may skip one or more of the following steps depending on your business requirements:

1. Create an IP Space. An IP Space stores the IP addresses that are unique to the particular IP Space. Go to Manage > IPAM/DHCP. Click Create > IP Space. For more information, see Creating IP Spaces.

2. Create an Address Block. An Address Block contains subnets. Address Blocks are used to group subnets. Address blocks are stored in an IP Space. is Go to Manage > IPAM/DHCP. Click Create > Address Block. For more information, see Creating Address Blocks. 

3. Create a Subnet. A subnet is a parent network for address ranges and fixed addresses with which it is associated.  Go to Manage > IPAM/DHCP. Click Create > Subnet. For more information, see Creating Subnets.

4. Create a Range. An address range is a pool of IP addresses from which Universal DDI allocates IP addresses to DHCP clients. Go to Manage > IPAM/DHCP. Click Create > Range. For more information, see Configuring Address Ranges. 

5. Create a Fixed Address. You can configure fixed addresses for network devices, such as routers and email servers, that are not frequently moved from network to network. Go to Manage > IPAM/DHCP. Click Create > Fixed Address. For more information, see Configuring Fixed Addresses.

6. Create an IPv4 Reservation. You can reserve an IP address for future use. Go to Manage > IPAM/DHCP. Click Create > IPv4 Reservation. For more information, see Configuring IPv4 and IPv6 Reservation.

7. Create DHCP Config Profile. A DHCP Config Profile is specific to the service instance that is assigned to it. Settings for the DHCP Config Profile are inherited from the Global DHCP Configuration. The inherited settings can be overridden and custom values can be specified. Go to Manage > IPAM/DHCP > DHCP Config Profiles. Click Create DHCP Config Profile. Modify the DHCP Config profile to assign it to a service instance. For more information, see Configuring DHCP Config Profiles.