neutron net-create External2 --provider:network_type flat --provider:physical_network eno16777736 --router:external=true --shared
neutron CLI is deprecated and will be removed in the future. Use openstack CLI instead.
Created a new network:
+---------------------------+--------------------------------------+
| Field                     | Value                                |
+---------------------------+--------------------------------------+
| admin_state_up            | True                                 |
| availability_zone_hints   |                                      |
| availability_zones        |                                      |
| created_at                | 2019-01-17T17:05:57Z                 |
| description               |                                      |
| id                        | 0f9adf89-6ee2-4e68-8559-fc474dedb30d |
| ipv4_address_scope        |                                      |
| ipv6_address_scope        |                                      |
| is_default                | False                                |
| mtu                       | 1500                                 |
| name                      | External2                            |
| port_security_enabled     | True                                 |
| project_id                | a76eea958a6e435a93e3ffc7a36c7970     |
| provider:network_type     | flat                                 |
| provider:physical_network | eno16777736                          |
| provider:segmentation_id  |                                      |
| qos_policy_id             |                                      |
| revision_number           | 1                                    |
| router:external           | True                                 |
| shared                    | True                                 |
| status                    | ACTIVE                               |
| subnets                   |                                      |
| tags                      |                                      |
| tenant_id                 | a76eea958a6e435a93e3ffc7a36c7970     |
| updated_at                | 2019-01-17T17:05:57Z                 |
+---------------------------+--------------------------------------+
[root@localhost ~(keystone_admin)]# neutron router-create router1
neutron CLI is deprecated and will be removed in the future. Use openstack CLI instead.
Created a new router:
+-------------------------+--------------------------------------+
| Field                   | Value                                |
+-------------------------+--------------------------------------+
| admin_state_up          | True                                 |
| availability_zone_hints |                                      |
| availability_zones      |                                      |
| created_at              | 2019-01-17T17:09:36Z                 |
| description             |                                      |
| distributed             | False                                |
| external_gateway_info   |                                      |
| flavor_id               |                                      |
| ha                      | False                                |
| id                      | 59dabea6-0f82-48e4-a093-9a4a904df496 |
| name                    | router1                              |
| project_id              | a76eea958a6e435a93e3ffc7a36c7970     |
| revision_number         | 0                                    |
| routes                  |                                      |
| status                  | ACTIVE                               |
| tags                    |                                      |
| tenant_id               | a76eea958a6e435a93e3ffc7a36c7970     |
| updated_at              | 2019-01-17T17:09:36Z                 |
+-------------------------+--------------------------------------+
[root@localhost ~(keystone_admin)]# neutron router-gateway-set router1 External2
neutron CLI is deprecated and will be removed in the future. Use openstack CLI instead.
Set gateway for router router1
[root@localhost ~(keystone_admin)]# ^C
[root@localhost ~(keystone_admin)]# neutron router-interface-add router1 Internal
neutron CLI is deprecated and will be removed in the future. Use openstack CLI instead.
Added interface 1271621e-4cf0-425e-a6a8-ad68c3b43c7a to router router1.

still the interfaces is down ...