Assign a Dedicated VLAN ID to a Target Project Network¶

To assign a dedicated VLAN segment ID you must first enable the Neutron segments plugin.

Procedure

Create a Helm overrides file to customize your Neutron configuration.

The file must load the segments plugin. For example:
```
...
conf:
neutron:
   DEFAULT:
     service_plugins:
     - router
     - network_segment_range
     - segments
...
```

Update the stx-openstack application using the overrides file created above.

Assuming you named the file neutron-overrides.yaml, run:

~(keystone_admin)]$ system helm-override-update stx-openstack neutron openstack --values neutron-overrides.yaml

You can check on the status of the update using the system helm-override-show command. For example:

~(keystone_admin)]$ system helm-override-show stx-openstack neutron openstack
+--------------------+---------------------------------------------------------------------------------------------------------------------+
| Property           | Value                                                                                                               |
+--------------------+---------------------------------------------------------------------------------------------------------------------+
| attributes         | enabled: true                                                                                                       |
|                    |                                                                                                                     |
| combined_overrides | conf:                                                                                                               |
|                    |   dhcp_agent:                                                                                                       |
|                    |     DEFAULT:                                                                                                        |
|                    |       interface_driver: networking_avs.neutron.agent.avs_manager.interface.VSwitchInterfaceDriver                   |
|                    |   neutron:                                                                                                          |
|                    |                                                                                                                     |
| ...                | ...                                                                                                                 |
|                    |                                                                                                                     |
| user_overrides     | conf:                                                                                                               |
|                    |   neutron:                                                                                                          |
|                    |     DEFAULT:                                                                                                        |
|                    |       service_plugins:                                                                                              |
|                    |       - router                                                                                                      |
|                    |       - network_segment_range                                                                                       |
|                    |       - segments                                                                                                    |
|                    |                                                                                                                     |
+--------------------+---------------------------------------------------------------------------------------------------------------------+

Note

The value for DEFAULT is folded onto two lines in the example above for display purposes.

Apply the stx-openstack application.

~(keystone_admin)]$ system application-apply stx-openstack

You can now assign the VLAN network type to a datanetwork.

Identify the name of the data network to assign.

List the available data networks and identify one to use in the heat template as:
```
physical_network: <datanetworkname>
```
In this example, we use datanet-1.

Create a heat template.

For example:

~(keystone_admin)]$ cat <<EOF > my_heat_template.yml
heat_template_version: 2017-09-01

resources:

  external01:
    type: OS::Neutron::Net
    properties:
      name: external001
      shared: "true"

  # Network segement
  segement01:
    type: OS::Neutron::Segment
    properties:
      network: { get_resource: external01 }
      network_type: "vlan"
      physical_network: "datanet-1"
      segmentation_id: 2111

  external01-subnet:
    type: OS::Neutron::Subnet
    properties:
      network: { get_resource: external01 }
      name: external02-subnet
      cidr: 10.10.10.0/24
      segment: { get_resource: segement01 }
EOF

Apply the template.

~(keystone_admin)]$ OS_AUTH_URL=http://keystone.openstack.svc.cluster.local/v3
~(keystone_admin)]$ openstack stack create -t my_heat_template.yml --wait test1-st
2020-10-16 21:20:34Z [test1-st]: CREATE_IN_PROGRESS Stack CREATE started
2020-10-16 21:20:34Z [test1-st.external01]: CREATE_IN_PROGRESS state changed
2020-10-16 21:20:35Z [test1-st.external01]: CREATE_COMPLETE state changed
2020-10-16 21:20:35Z [test1-st.segement01]: CREATE_IN_PROGRESS state changed
2020-10-16 21:20:37Z [test1-st.segement01]: CREATE_COMPLETE state changed
2020-10-16 21:20:37Z [test1-st.external01-subnet]: CREATE_IN_PROGRESS state changed
2020-10-16 21:20:38Z [test1-st.external01-subnet]: CREATE_COMPLETE state changed
2020-10-16 21:20:38Z [test1-st]: CREATE_COMPLETE Stack CREATE completed successfully

Confirm the configuration.

List network segments.

~(keystone_admin)]$ openstack network segment list
+--------------------------------------+--------------------------------------------+--------------------------------------+--------------+---------+
| ID                                   | Name                                       | Network                              | Network Type | Segment |
+--------------------------------------+--------------------------------------------+--------------------------------------+--------------+---------+
| 502e3f4f-6187-4737-b1f5-1be7fd3fc45e | test1-st-segement01-mx6fa5eonzrr           | 6bbd3e4e-9419-49c6-a68a-ed51fbc1cab7 | vlan         |    2111 |
| faf63edf-63f0-4e9b-b930-5fa8f43b5484 | None                                       | 865b9576-1815-4734-a7e4-c2d0dd31d19c | vlan         |    2001 |
+--------------------------------------+--------------------------------------------+--------------------------------------+--------------+---------+

Note

Thr name test1-st-segement01-mx6fa5eonzrr has been folded onto two lines in the sample output above for display purposes.

List subnets.

~(keystone_admin)]$ openstack subnet list
+--------------------------------------+---------------------+--------------------------------------+------------------+
| ID                                   | Name                | Network                              | Subnet           |
+--------------------------------------+---------------------+--------------------------------------+------------------+
| 0f64c277-82d7-4161-aa47-fc4cfadacf2f | external01-subnet   | 6bbd3e4e-9419-49c6-a68a-ed51fbc1cab7 | 10.10.10.0/24    |
| bb9848b6-63f0-4e9b-b930-5fa8f43b5ddc | subnet-temp         | 865b9576-1815-4734-a7e4-c2d0dd31d19c | 192.168.17.0/24  |
+--------------------------------------+---------------------+--------------------------------------+------------------+

In this example, the subnet external01-subnet uses a dedicated segment ID.

Listing details for the subnet shows that it uses the segment ID created earlier.

~(keystone_admin)]$ openstack subnet show
0f64c277-82d7-4161-aa47-fc4cfadacf2f | grep segment | segment_id |
502e3f4f-6187-4737-b1f5-1be7fd3fc45e |

Note

Dedicated segment IDs should not be in the range created using the openstack network segment range create commands. This can cause conflict errors.

Assign a Dedicated VLAN ID to a Target Project Network

Assign a Dedicated VLAN ID to a Target Project Network¶

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