Client network devices and configuration servers are used together to automatically configure the client network devices. A hydrogen purity sensor is provided in the system which comprises a multilayered nanostructural film of high refractive index and low refractive index materials for receiving the optical signal. In the case of receiving, the method includes streaming a data element, including at least some of the contents of the received packet, over a network link during receive time, including decrypting the data element during the streaming in real time after to the transfer over the network link. Side walls 31 are provided at the opposite ends in an arrangement direction of the engaging portions 26A, 26B and projecting forward from the main body 21 in a connecting direction with the mating connector 50. In one example, any one of the stages of the plurality of stages may be selectively and dynamically coupled with any one of the sectors of the forwarding table memory for providing an address to a particular sector of the memory to read data therefrom. Other methods and systems of configuring and displaying data elements from textual sources are provided.