Topology 2 is a "region aware" view of the topology, where the administrator can configure the network into regions and sub-regions.
In its default state (where no "regions" or "layouts" are defined), it should look and behave similarly to the "classic" Topology view.
Note that this view is currently "experimental".
The ONOS model of the network includes Region objects which can be configured with a collection of Devices (switches) "belonging" to that region.
Regions can be configured using a number of CLI commands:
To add a region to the model, the region-add command can be used..
region-add <region-id> <region-name> <region-type> <lat/Y> <long/X> <locType> <region-master>