Display Neighbor Information for Sub-Interfaces on L2 Topology Maps

NetBrain currently does not show neighbor device information when a user expands a device to view its sub-interfaces on a topology map; neighbor data is only visible at the physical interface level. This enhancement would extend neighbor discovery and display logic so that sub-interfaces show their connected neighbor devices in the same way physical interfaces do. Customers who model both physical and logical sub-interface connections on their maps would gain complete topology visibility, reducing manual investigation when tracing logical connections.