Unsupported Topologies for Zero-Touch
Unsupported Topology 1: A set of new units cannot be discovered if there is a loop between PE units.
Unsupported Topology 2: A set of new units cannot be discovered if there is an improper loop between PEs and the CB.
Unsupported Topology 3: More than one unit cannot be added directly to an edge PE.
Unsupported Topology 4: A single new unit in a ring topology is not supported.