Allocate IP address slots in a subnetwork

  • Release version: Australia
  • Updated June 16, 2026
  • 2 minutes to read

    • Allocate IP address slots in bulk from an IP Subnetwork. The system creates one allocated IP record for each address in the subnetwork’s CIDR. Reserved addresses (the first and last for IPv4, or the first for IPv6) are flagged automatically and cannot be promoted to IP Address records.

    Before you begin

    Before you begin:

    • Install all required Telecommunications Network Inventory plugins.
    • Role required: core.dc_ops_agent, sn_ni_core.inventory_agent
    • The IP Subnetwork must be in an active state (Life Cycle Stage = Operational and Life Cycle Stage Status = In Use).
    • The subnetwork must not already have allocated IP records. To re-allocate, delete the existing allocated IP records first.
    • The subnetwork’s CIDR must contain at most 64 addresses. This means the prefix length must be /26 or longer for IPv4, or /122 or longer for IPv6. To learn more, see Bulk allocation limits for allocated IP addresses.

    About this task

    Allocating IP address slots creates one Allocated IP Address record for every address in the subnetwork's CIDR. Each record carries an Is Reserved flag, set automatically for protocol-reserved addresses. It also carries an Is Managed flag, set automatically once an IP Address record is created from the slot. The slot records form the inventory you draw from when creating individual IP Address records using the from allocated IPs method.

    This task is the first step of the per-host allocation method. If you instead want to create a single IP Address record representing the subnetwork as a whole (the at-subnet-level method), do not run this task. See Create an IP Address record at subnet level.

    Procedure

    1. Navigate to Workspaces > Network Inventory Workspace or Service Operations Workspace.
    2. Open the IP Subnetwork record.

      (Inventory Number Allocation > IP Network Subnets > select the subnetwork.)

    3. Select the Allocated IP Address tab.
    4. Open the three-dot menu in the top-right corner and select Create Allocated IP Address Record.
    5. In the confirmation dialog, review the number of addresses that will be created.
    6. Select OK to confirm.

      The system creates the allocated IP records and displays a confirmation banner.

    7. Review the allocated IP records on the Allocated IP Address tab.

      The tab count updates to reflect the number of records created. Each record displays the following fields:

      Field Description
      Name The address value.
      IP Address The address value.
      Is Reserved True for addresses that cannot be promoted to IP Address records (first and last for IPv4; first only for IPv6). False otherwise.
      Is Managed False until an IP Address record is created from this slot. Not user-editable.
      Managed Network Inherited from the parent subnetwork.

    What to do next

    Create IP Address records from one or more of the allocated IP slots. See Create IP Address records from allocated IPs.