> For the complete documentation index, see [llms.txt](https://yeasy.gitbook.io/openstack_code_neutron/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://yeasy.gitbook.io/openstack_code_neutron/neutron/db/models_v2py.md).

# models\_v2.py

通过继承model\_base.BASE2，定义了几个数据模型，包括IPAllocationPool，IPAllocation，Route，SubnetRoute，Port，DNSNameServer，Subnet，Network。