The L2GW extension API exposes a flexible way to allow implementers to map logical gateways to the physical ones the way they see fit. This API is about logical gateways definition, intentionally leaving out the physical device management.
L2GW API exposes the abstraction of L2 gateway with its interface(s). L2 gateway can expand over several devices with number of interfaces, and each interface can be defined with different list of segmentation ids. Each device is identified by meaningful name, and its possible to add/remove interfaces.
L2GW Binding API allows binding of logical gateway to an overlay network. In the future logical gateway can be bound to the list of virtual networks. Optionally, its possible to specify the default segmentation-id that will be applied to the interfaces for which segmentation id was not specified in l2-gateway-create command.
L2GW API allows to define logical GW that contains group of devices. In single L2GW instance the administrator will define all VTEP devices that should be used as single logical gateway either in Active-Passive or Active-Active mode.
Please refer to the upstream Stackforge project, ‘network-l2gw’[1] for the API DB and the client design.
Add ‘l2-gateway’ extension alias in the supported extension aliases list.
MidoNet plugin should extend ‘L2GatewayMixin’ class, and implement the CRUD methods for l2 gateway and l2 gateway connection objects.
New tasks representing the L2GW and L2GW Connection are inserted into the tasks table in the appropriate CRUD operations.
The upstream ‘network-l2gw’ API is re-used.
The upstream ‘network-l2gw’ DB tables are re-used.
New task types, ‘L2GW’ and ‘L2GWCONNECTION’, are introduced.
The client commmands are the same as those defined in the ‘network-l2gw’ project.