Both RFC6349 and ExacTCP methodologies implemented by EXFO are FPGA hardware based and dedicated just for the test. Lumen uses EXFO as our vendor for test instruments and service assurance equipment in its central offices, in addition to the RFC6349 test suite, EXFO has also provided their own contribution to TCP testing, they call this test methodology application ExacTCP, it is based in 6349 and other RFCs that provide further standardization, TCP window control, capability of running a single TCP stream on the pipe and reduction of the number of variables at play compared to other testing methodologies. For Layer 2 Testing: Menu Test Mode Link Init Ethernet Option Test RFC 2544 Mode SAM Complete Value Layer 2 Traffic Symmetric Disable Auto Negotiation See. Ethernet Demarcation Devices can provide background in-service monitoring of network performance and SLA characteristics. Inter-frame delay variation (IFDV) is not part of the RFC 2544 methodology. SmartClass Ethernet Tester User’s Guide iii Low Voltage Directive Compliance This product was tested and conforms to the Low Voltage Directive, 73/23/EEC as amended by 93/68/EEC. To address such shortage, the IETF and multiple vendors and service providers worked on a standardized framework for TCP throughput testing, such testing methodology is called RFC 6349. RFC 2544 is a performance-based measurement, which means that the methodology will take the necessary amount of time required to find the absolute performance limit of a device/service but not if it is meeting the service level agreement (SLA) negotiated with the end-user. The EtherSAM (ITU-T Y.1564) as defined in the default or customized frameworks may not provide the information required to understand why a service does not work as expected at the layer 4 of the OSI model, this is especially true for TCP. Dual-ended testing is not yet supported by the current. Occasionally, the new service may require additional testing. Ethernet link between Port 3 of the two switches connected directly.