|  | Set up connection between infra bridge and Neutron external bridge | 
|  |  | 
|  | Network topology used in CI multinode jobs is described In `Devstack documention | 
|  | <https://opendev.org/openstack/devstack-gate/src/branch/master/multinode_setup_info.txt#L81>`_ | 
|  |  | 
|  | In case when DVR is used, there is also additional bridge ``br-infra`` added | 
|  | on each node to provide connectivity to floating IPs from main node. | 
|  |  | 
|  | This bridge needs to be connected with bridge used by Neutron as | 
|  | external bridge. Typically it is ``br-ex`` and this role adds patch ports | 
|  | between those bridges. | 
|  |  | 
|  | **Role Variables** | 
|  |  | 
|  | .. zuul:rolevar:: neutron_external_bridge_name | 
|  | :default: br-ex | 
|  |  | 
|  | Name of the Neutron external bridge. | 
|  |  | 
|  | .. zuul:rolevar:: infra_bridge_name | 
|  | :default: br-infra | 
|  |  | 
|  | Name of the infra bridge. |