+-------------------------+ | | | Abstract Network Model | | | +------------+------------+ | +---------+---------+ | | +------V------+ +------V------+ | Abstract | | Inventory | | Network | | Models | | Topology | | (e.g., SAP | | Model | | Network | | | | Model) | +-----+-------+ +-------------+ | +-----------+-----------+ | | | +----V----+ +----V----+ +----V----+ |TE Topo | |L3 Topo | |L2 Topo | | Model | | Model | | Model | ... +---------+ +---------+ +---------+