1. A network device comprising: a memory; and a high performance interface for communicating with network elements through transfer of data contained in said memory; wherein said high performance interface comprises a data connection bus, where data is transferred on both a rising edge and a falling edge of a clock signal, the data connection bus comprising output drivers and a multiplexing circuit connected to the output drivers; wherein said multiplexing circuit has two levels of glitchless multiplexors to serialize said data transmitted over said high performance interface.