可以查询网络的IP使用情况
neutron net-ip-availability-list
neutron net-ip-availability-show
GET /v2.0/network-ip-availabilities/{network_uuid}
{ "network_ip_availability": { "network_id": "f944c153-3f46-417b-a3c2-487cd9a456b9", "network_name": "net1", "subnet_ip_availability": [ { "cidr": "10.0.0.0/24", "ip_version": 4, "subnet_name": "", "subnet_id": "46b1406a-8373-454c-8eb8-500a09eb77fb", "total_ips": 253, "used_ips": 3 } ], "tenant_id": "test-tenant", "total_ips": 253, "used_ips": 3 } }
http://docs.openstack.org/developer/neutron/devref/network_ip_availability.html
Network IP Availability Extension
原文：http://www.cnblogs.com/allcloud/p/5486139.html