Cloud add VLAN External Provider

Step-by-step guide

1. Create a new network interface on the external vlan
   
   

   [root@overcloud-controller-1 heat-admin]# neutron net-create lab1-vlan541 \
                            --provider:network_type vlan \
                            --router:external true \
                            --provider:physical_network datacentre \
                            --provider:segmentation_id 541
   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                | 2017-10-18T00:26:05Z                 |
   | description               |                                      |
   | id                        | 6760aa48-f0ef-46ab-a6a8-de5cbfdbe9ee |
   | ipv4_address_scope        |                                      |
   | ipv6_address_scope        |                                      |
   | is_default                | False                                |
   | mtu                       | 1500                                 |
   | name                      | lab1-vlan541                         |
   | port_security_enabled     | True                                 |
   | project_id                | 3598428b5ccb4b91832ddc455eb98c76     |
   | provider:network_type     | vlan                                 |
   | provider:physical_network | datacentre                           |
   | provider:segmentation_id  | 541                                  |
   | qos_policy_id             |                                      |
   | revision_number           | 4                                    |
   | router:external           | True                                 |
   | shared                    | False                                |
   | status                    | ACTIVE                               |
   | subnets                   |                                      |
   | tags                      |                                      |
   | tenant_id                 | 3598428b5ccb4b91832ddc455eb98c76     |
   | updated_at                | 2017-10-18T00:26:05Z                 |
   +---------------------------+--------------------------------------+

2. Create a new van definition on the controller nodes
   
   

   [root@overcloud-controller-1 heat-admin]# cat /etc/sysconfig/network-scripts/ifcfg-vlan541 
   
   # This file is autogenerated by os-net-config
   DEVICE=vlan541
   ONBOOT=yes
   HOTPLUG=no
   NM_CONTROLLED=no
   PEERDNS=no
   DEVICETYPE=ovs
   TYPE=OVSIntPort
   OVS_BRIDGE=br-ex
   OVS_OPTIONS="tag=541"
   BOOTPROTO=static
   IPADDR=192.168.72.9
   NETMASK=255.255.240.0

3. Create the plan definition in the switch
   
   

       openstack-external-lab1-nw {
           description "Openstack NW for lab access";
           vlan-id 541;
       }

4. External Networks

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