Abstract: Methods, apparatus, and products for inferred discovery of devices of a data communications network are described. In embodiments of the present invention the data communications network includes a plurality of data communications devices connecting a plurality of routers, each data communications device having a device address, each router having one or more network interfaces. Embodiments of the present invention also include querying each router for connection data, the connection data associating interfaces of the router with device addresses; identifying for each router in dependence upon the connection data an interface of the router connected to a data communications device including identifying a device address associated with the interface; and creating, in dependence upon the identified device addresses for all routers, a representation of the data communications network in a network model.