RFC 2544 is a testing methodology widely used to assess the performance of an Ethernet based network. It was designed to evaluate the performance characteristics of network devices primarily in a lab environment and has been widely adapted to provide performance metrics of Ethernet based network services. RFC 2544 defines a number of out of service tests that can used to describe the performance characteristics of a network interconnecting device. In addition, the standard describes the specific formats for reporting the results of the tests. Tests include Burst, Throughput, Latency and Frame Loss.