This paper presents an approach for system testing of networking equipment. This approach utilizes network traffic generators to simulate a 'real life" environment for the unit under test. The traffic which is generated by the test equipment can be used to test both the hardware and software in the unit under test as well as the interaction between the hardware and software. Another important aspect of this level of system testing is conformance testing which ensures that networking equipment from different vendors can interact reliably. A general overview of networking systems will be presented, discussing the key elements of the networking system. A "real life" system test methodology which utilizes the traffic generator will then be presented along with the benefits of this approach.