Application Practice of Network Physical Topology Digital Twin in Operator Network Operation and Maintenance

Under the background of Digital transformation of basic network operation and maintenance, this paper studies the network physical topology characterization from the edge node of the backbone network to the user end through the user network element penetration on the network side, and the relationship topology characterization from the business platform to the product and between the product and the user through the product penetration on the service side. We have carried out the application practice of digital twins in network physical topology, providing a three-dimensional visualization topology display of horizontal business logic topology and vertical link physical transmission topology. When there are network service exceptions, the network management system can quickly traverse and locate, complete the calculation of the fault impact range and extend clustering statistics to the user side, accurately provide physical information such as geographical location, port information, fiber optic cables, etc., and provide technical support for the rapid repair work of operation and maintenance personnel.