Querying IP Address Usage on a Specified Network

Function

This API is used to query the IP address usage on a specified network.

The obtained information includes the total number of IP addresses on the network, the number of in-use IP addresses on the network, the total number of IP addresses on each subnet, and the number of in-use IP addresses on the subnet.

The first and the last two IP addresses on each subnet are reserved by the system for the gateway and DHCP service.
The total number of IP addresses and the number of in-use IP addresses described in this section and the subsequent sections do not include the IP addresses reserved by the system.
When assigning an IP address, you can specify the reserved IP address for the system. The reserved IP addresses will not be included in the number of in-use IP addresses and the total number of IP addresses no matter how the IP address is assigned.

URI

GET /v2.0/network-ip-availabilities/{network_id}

Table 1 describes the parameters.

**Table 1** Parameter description
Parameter	Type	Mandatory	Description
network_id	String	Yes	Specifies the network ID. NOTE: network_id indicates the subnet ID used when the VPC subnet API is called. For more information, see What Is the Difference Between the VPC Subnet API and the OpenStack Neutron Subnet API?.

Request Parameters

None

Example Request

GET https://{Endpoint}/v2.0/network-ip-availabilities/6b50d967-779c-40c9-a157-de1df3c17043

Response Parameters

**Table 2** Response parameter
Name	Type	Description
network_ip_availability	network_ip_availability object	Specifies the network_ip_availability objects. For details, see Table 3.

**Table 3** **network_ip_availability** objects
Name	Type	Description
network_id	String	Specifies the network ID.
network_name	String	Specifies the network name.
tenant_id	String	Specifies the project ID.
total_ips	Integer	Specifies the total number of IP addresses on a network. (System reserved IP addresses are not included.)
used_ips	Integer	Specifies the number of in-use IP addresses on a network. (Reserved IP addresses are not included.)
subnet_ip_availability	Array of subnet_ip_availability objects	Specifies the subnet IP address usage objects. For details, see Table 4.

**Table 4** Description of the **subnet_ip_availability** field
Parameter	Type	Description
used_ips	Integer	Specifies the number of in-use IP addresses on a subnet. (System reserved IP addresses are not included.)
subnet_id	String	Specifies the subnet ID. If you use the management console, the value of this parameter is the Network ID value.
subnet_name	String	Specifies the subnet name.
ip_version	Integer	Specifies the IP version of the subnet. Only IPv4 is supported.
cidr	String	Specifies the subnet CIDR block.
total_ips	Integer	Specifies the total number of IP addresses on a subnet. (System reserved IP addresses are not included.)

Example Response

{
  "network_ip_availability": {
    "used_ips": 4,
    "subnet_ip_availability": [
      {
        "used_ips": 4,
        "subnet_id": "98e343d1-3cb8-4f69-9cd1-00569819480f",
        "subnet_name": "",
        "ip_version": 4,
        "cidr": "10.0.0.0/8",
        "total_ips": 300
      }
    ],
    "network_id": "6b50d967-779c-40c9-a157-de1df3c17043",
    "tenant_id": "7c4b23cb125d481c95cbe4f91b2c11cd",
    "total_ips": 300,
    "network_name": "pch_test_003"
  }
}