The last step to building a functional trunk is to create a trunk object and associate parent and sub-ports. The information required for the trunk includes a name, a parent port with segment details, and sub-port(s) with segment details. With the OpenStack client, create a trunk object with the following attributes:

• Name: trunk0
• Parent port: parent0
• Sub-port: child-p0c1
• Sub-port VLAN: 42

The following command can be used:

openstack network trunk create 
--parent-port parent0 
--subport port=child-p0c1,segmentation-type=vlan,segmentation-id=42 
trunk0

The output will resemble the following: