Documenting networks with electronic modules

A documentation system for a network having a source device which is connected to a network path which is con nected to a destination device, the documentation system comprising, a data port which includes an electronic module with an identification code on the network path, the destina tion device including an electronic module with an identifi cation code, the source device having the capability to send query signals along the network path addressed to a data port and destination device corresponding to the network path, the electronic module corresponding to the data port responding to the query addressed to the data port by transmitting its identification code to the source device, and the electronic module of the destination device responding to the query addressed to the destination device by transmitting its iden tification code to the source device, and a processor and a Switch in communication with the Source device, the proces sor and switch for directing the source device to send the query signals, to interpret the responses, and to re-send the query signals if a collision occurs between responses.