Additional info

root@testopenstack2 ~]# neutron port-list
+--------------------------------------+------+-------------------+------------------------------------------------------------------------------------+
| id                                   | name | mac_address       | fixed_ips                                                                          |
+--------------------------------------+------+-------------------+------------------------------------------------------------------------------------+
| d428cf54-e73a-47bb-97f7-5575c2ab2cb2 |      | fa:16:3e:b2:74:52 | {"subnet_id": "247c4d3e-39d7-4ac2-8cb6-25cabd1c91f3", "ip_address": "172.16.21.2"} |
| f1e73585-8b28-43bf-830f-88f8989f4951 |      | fa:16:3e:b6:1e:19 | {"subnet_id": "b90a02fd-fea5-4b7b-8eb3-70c94215a376", "ip_address": "172.16.20.3"} |
+--------------------------------------+------+-------------------+------------------------------------------------------------------------------------+
[root@testopenstack2 ~]# neutron net-list
which: no gedit in (/usr/lib64/qt-3.3/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin)
which: no kate in (/usr/lib64/qt-3.3/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin)
+--------------------------------------+-------+-----------------------------------------------------+
| id                                   | name  | subnets                                             |
+--------------------------------------+-------+-----------------------------------------------------+
| 7b857042-d47e-4b80-aad2-02db3fdaadfa | test1 | 247c4d3e-39d7-4ac2-8cb6-25cabd1c91f3 172.16.21.0/24 |
| aa626552-79d8-494d-8838-9054cd2075a2 | test  | b90a02fd-fea5-4b7b-8eb3-70c94215a376 172.16.20.0/24 |
+--------------------------------------+-------+-----------------------------------------------------+
[root@testopenstack2 ~]# neutron subnet-list
+--------------------------------------+------+----------------+--------------------------------------------------+
| id                                   | name | cidr           | allocation_pools                                 |
+--------------------------------------+------+----------------+--------------------------------------------------+
| b90a02fd-fea5-4b7b-8eb3-70c94215a376 |      | 172.16.20.0/24 | {"start": "172.16.20.2", "end": "172.16.20.254"} |
| 247c4d3e-39d7-4ac2-8cb6-25cabd1c91f3 |      | 172.16.21.0/24 | {"start": "172.16.21.2", "end": "172.16.21.254"} |
+--------------------------------------+------+----------------+--------------------------------------------------+
[root@testopenstack2 ~]# neutron subnet-show 247c4d3e-39d7-4ac2-8cb6-25cabd1c91f3

+------------------+--------------------------------------------------+
| Field            | Value                                            |
+------------------+--------------------------------------------------+
| allocation_pools | {"start": "172.16.21.2", "end": "172.16.21.254"} |
| cidr             | 172.16.21.0/24                                   |
| dns_nameservers  |                                                  |
| enable_dhcp      | True                                             |
| gateway_ip       | 172.16.21.1                                      |
| host_routes      |                                                  |
| id               | 247c4d3e-39d7-4ac2-8cb6-25cabd1c91f3             |
| ip_version       | 4                                                |
| name             |                                                  |
| network_id       | 7b857042-d47e-4b80-aad2-02db3fdaadfa             |
| tenant_id        | 1acf6e8ed5c14f0eba53d0cb43e34e93                 |
+------------------+--------------------------------------------------+