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Configuring DHCP Config Profiles

Owned by Sri Raghu
Last updated: Sept 12, 2024
3 min read

A Global DHCP Configuration contains all the settings required to run a service instance as a DHCP server.  A DHCP config profile is configured and applied locally to the service instance. All configuration settings are inherited from the Global DHCP Configuration into the DHCP config profile by default. If there are no changes made to the DHCP config profile, it would be an exact copy of the Global DHCP Configuration. For more information, see Global DHCP Configuration. 

However, in some instances, you may need to configure settings that are different from the Global DHCP Configuration. In such instances, you can override the values inherited into the DHCP config profile. There are only two configurations available for inheritance in the DHCP config profile: 

  • Inherit - this is the default setting. The values for the particular setting exactly matches the value provided in the Global DHCP Configuration. 

  • Override - you can toggle the configuration to Override and provide alternate values.  Use this setting when you want to provide a value for a setting that is different from the one specified in Global DHCP Configuration. 

 

You cannot delete a DHCP config profile if it is in use by a service instance. A DHCP config profile may be assigned to multiple service instances. 

The DHCP config profile is applied locally to a service instance. The DHCP config profile contains all the settings required for the particular service instance. For example, an organization creates a Global DHCP Configuration at the head office. The branch office can deploy a DHCP server ( service instance) and inherit values from the Global DHCP Configuration. For settings unique to the particular branch office, the organization creates a DHCP config profile to override settings in the Global DHCP Configuration and apply it to the service instance. The following diagram shows the stage at which the DHCP config profile is configured:

 

The diagram shows the stages for configuring a DHCP config profile. Global DCHP properties are configured, then an IP space is created, then an address block is created, then a subnet is created, then a range and a fixed address are created, and then a DHCP Config profile is created.

An organization may need to configure different values in the Global DHCP Configuration and DHCP config profile. For example, an organization may have long lease times for desktops, laptops, and printers. However, IoT devices like air quality monitoring, electrical panel monitoring, and leak monitoring systems may have short lease times. Although the Global DHCP properties have longer lease times, the DHCP Config profile may need to be configured with shorter lease times. The DHCP Config profile is applied to the service instance that manages the IoT devices. The DHCP config profile and the Global DNS properties are applied together as shown in the diagram:

 

 

To view the list of DHCP config profiles: 

  1. From the Infoblox Portal, click Configure > Networking > IPAM/DHCP > DHCP Config Profiles.

  2. The application displays the following information for each DHCP Config Profile:

  • NAME: Displays the name of the DHCP Config Profile.

  • DESCRIPTION: Displays additional information about the DHCP Config Profile.

  • SERVICE INSTANCES ASSIGNED: Displays the service instances that are associated with the DHCP server in the Info panel.

You can also do the following in this tab:

  • Click the menu button, , to reorder the columns.

  • Click the menu button, , then Edit, or select the check box for the respective record and click the Edit button to modify a DHCP Config Profile.

  • Select a DHCP Config Profile to view the details. You can view details like description, leases, DHCP options, DDNS, and tags associated with it on the right panel. If you do not want to view the details in the right panel, click the information button, .

  • Enter the value that you want to search in the Search text box. The application displays the list of records matching the keyword in the text box.

  • Click the filter button, , to filter the objects by name, description and tags. To save a filter after selecting the required parameters click Save Filter, specify a name for the filter, and click Save. To reload a previously saved filter, click the Saved filters button, , and select the required filter. 

  • Click  the menu button, , then Move to Recycle Bin to move the object to the recycle bin. You can restore the object later or delete it permanently as required. For more information, see Recycle Bin.

You can perform the following actions:

 

 

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