s ExpertSAM™ is an optional application with GL’s PacketExpert™, Ethernet / IP Tester that comes in 2 platform variants –
- ExpertSAM™ 1 Gbps (PXE106) – This is a quad port USB based portable unit, 2 of which can be either Electrical or Optical (Port 2, Port 3) and other 2 Electrical only (Port 1, Port 4). ExpertSAM™ multi-stream ITU-T Y.1564 standard compliant test is supported on Port2, which is capable of varying link speeds ranging from 10 Mbps to 1 Gbps for the electrical interfaces, and 1000 Mbps for the optical interface
- ExpertSAM™ 10 Gbps & 1 Gbps (PXG106) - This is a quad port USB based portable unit, of which 2 are 10 Gbps optical ports, and other 2 are 10/100/1000Mbps Electrical / Optical ports. ExpertSAM™ multi-stream ITU-T Y.1564 standard compliant test is supported on 10G/1G: Port 1, which is capable of 1000 Mbps (Electrical/Optical ports) and 10 Gbps (Optical only ports) link speeds.
ExpertSAM™ is intended for multiservice testing to measure the maximum performance of the Device or the Network Under Test. ExpertSAM™ is a set of procedures that test the ability of Ethernet-based services to carry a variety of traffic (voice, data, and video) at defined performance levels. In particular, it is aimed at addressing limitations of legacy RFC 2544 test procedures, especially for Service Level Agreements (SLA).
ExpertSAM™ is a single test conducted to validate SLAs as per ITU-T Y.1564 standard. The ITU-T Y.1564 is built around two key subtests, the Service Configuration Test and the Service Performance Test.
In ITU-T Y.1564 ExpertSAM™ test procedure Bandwidth CIR (Committed Information Rate) / EIR (Excess Information Rate)/Overshoot traffic, Frame Loss, Frame Delay and Frame Delay Variation are measured and compared to the expected values for each service ensuring it is within its committed range or the threshold defined for guaranteed traffic such as CIR.
ExpertSAM™ performs round-trip measurements in combination with a remote loopback. As depicted in the above test setup, another PacketExpert™ is configured as a loopback device. In this case, the results reflect the average of both Tx and Rx test directions.
PacketExpert™ also supports Command line Interface (CLI) to access all ExpertSAM™ functionalities remotely using TCL clients and MAPS™ CLI client/server architecture.