You cannot delete a subnet range if it is being used by at least one CPE template or CPE device. You need to look up the usage of the subnet range and make sure that it is not being used.
Deleted subnet ranges cannot be restored.
To delete subnet ranges:
By default, the IP pools tab is selected, displaying a table of IP address ranges.
A table of subnet ranges is displayed.
The settings area is displayed in the lower part of the page. You can expand the settings area to fill the entire page by clicking the expand icon . By default, the Configuration tab is selected, displaying the settings of the subnet range.
The subnet ranges are deleted and are no longer displayed in the table.
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