Managing scopes

Scopes are sets of IP addresses for which a DHCP server can give leases. Each scope is part of a scope group.

All scopes and reservations in the NS1 DDI platform must be associated with a scope group. You can manage scopes and reservations when you drill down to view individual scopes and reservations from the scope groups page.

Many of the DHCP options for scopes are inherited from their parent scope groups. You can find the options for a scope by selecting it on the scope page, then viewing the Options tab:

Scope settings include general configuration options, such as ping check (to ping the IP of a lease that is about to be offered to ensure that the IP is not still in use), client class configuration settings, relays, and option spaces.

Finally, you can also set tags and permission tags for each scope. Tags allow you to search and discover at scale, control access, and delegate resources to your teams effectively for management. Rapidly categorize your objects, creating hierarchies between them with tags.

This article includes instructions for:

• Viewing scopes
• Creating a scope
• Editing scope settings
• Restricting scopes to a specific client class
• Deleting a scope

Viewing scopes

In the NS1 DDI portal, navigate to DHCP > Management to view a list of existing scope groups and their usage.

Learn more about the scopes in a scope group by drilling down into it. Select the scope group, then click the > (“drill down”) icon above the scope group list:

Creating a scope

Note: Before you begin, you must create a DHCP scope group as well as the IPAM subnet you wish to assign to it.

1. Navigate to the subnet you wish to assign to the scope group and select it (or press M) to reveal the subnet's metadata in the right-hand sidebar.
2. Change the subnet type to "assigned" in the metadata pane prior to adding it to a scope group.
3. Click the menu icon to the right of the subnet you wish to assign to reveal the drop-down menu.
   
4. Hover over Assign to scope group, and select the scope group from the list. This creates a pool with a size equivalent to the entire subnet.
   
5. Optionally, you can subdivide the IPAM subnet by clicking the menu icon to the right of the subnet and select Add or remove ranges to modify the pool size.
   
   Under Create a new range, enter the range of IP addresses by indicating the specific start and end IP addresses, or enter the start IP address + the number of IP addresses you want to include in the range. Note the list of all existing ranges and reservations associated with the scope.

Editing scope DHCP settings

1. Click the menu to the right of the scope that you want to edit, then click Edit DHCP options:
   
2. Modify the settings of the scope in the Edit Scope dialog:
   

Restricting scopes to a specific client class

You can modify the client class access settings by clicking the menu icon to the right side of the scope, then selecting Client Class Access:

Deleting a scope

Click the menu icon on the right side of the scope that you want to edit, then select Delete: