Abstract: Faster and faster time-to-market demands necessitate a very thorough and flexible verification process of any embedded networking system design, in order to minimize the risk of costly hardware and software re-designs. With gate counts (1M+gates), a relatively seamless design flow, and quick programmability, the field-programmable gate array (FPGA) is a great tool for creating a hardware prototype test bench that allows integration of the RTL (Register Transfer Level) code with actual physical interfaces. This paper will explore some of the FPGA design methodologies and implementations used for verifying a 'residential gateway' system level prototyping environment.