Using the RFC-2544 Test Suite

Only one test suite can be created per device.

Default: 2000 bytes

Range: 1518–10240 bytes

Note: The size must be less than or equal to the port's MTU.

Default: 2 seconds

Range: 1–10 seconds

Out of Order frames/packets are frames/packets that are received in a different order than what they were sent in.

When strict failure is enabled, OOO or duplicate frames/packets will cause a test to fail, even if all frames/packets were received.

When strict failure is disabled, the unit tolerates OOO and duplicate frames/packets. If all frames/packets were received, the test is marked as passed.

When excluding the VLAN size, the frame length is increased by the size of the VLAN tag header(s) being added to the frame.

Note: Enabling this parameter does not affect the Frame size that will appear in the test report.

The throughput test begins by determining the maximum rate at which the test settings yield no lost frames. For example, to measure the quality of a wire-speed GigE circuit, enter a Minimum Rate of 800 Mbps, a Maximum Rate of 1000 Mbps, a Step Size of 10 Mbps, and a Binary Duration of 2 seconds. The unit then performs a binary search between 800 Mbps and 1000 Mbps for 2 seconds using 10 Mbps increments in order to determine the highest rate at which the test can be performed without failing.

Once the maximum rate is determined, the throughput test starts executing the actual test, which involves sending frames according to the selected Frame Size settings for the duration specified by the Trial Duration.

Once a wire-speed rate with no frame loss has been defined by the throughput test, the delay and delay variation test measures the latency and jitter at that specific rate.

The frame loss test verifies that no frames are lost when the current test settings are used.

The unit starts at the maximum rate defined in the Throughput settings section, then steps down by the value entered in the Step Size parameter of the Frame Loss settings.

Two consecutive rates must have no frame loss in order to successfully pass this test. For example, if the Unit Under Test (UUT) is able to perform full wire-speed at GigE, the test runs at 1000 Mbps and 980 Mbps (for a Step Size of 20 Mbps). Both tests must yield no frame loss in order to be successful. Otherwise, a lower rate will be tested.

The back-to-back test sends a minimum of 50 repetitive bursts of frames with minimum inter-frame gap (line rate) according to the test settings. For this test to be successful, the network being tested must not lose any frames after a burst. A two-second pause is inserted after each burst.

• Layer-2: Y.1731 LBM frames.
• Layer-2 Accedian: Modified LBM frames marked with the Accedian Ethertype.
• Layer-2 generic: Special Y.1731 OpCode frames to be used only with loopback devices based on the MAC-address swap.
• Layer-3: UDP segments to perform a test across a multi-layered network.
• Layer-3 generic: Layer-2 frames with generic Layer-3 (UDP) payload. To be used only with loopback devices based on "MACaddress swap".

Note: Layer-3 generic traffic is available for the traffic generator and test suite. It is not available for Y.1564 SAT.

For details, refer to ITU-TY.1731.

Note: For reporting to work properly, you must set the port to a value in the range of 0–65535 but you cannot set the destination port value to 8793, since this is Accedian's proprietary port number. For information on destination ports default values, refer to "Network Requirements — TCP/UDP Ports".

A port cannot be defined as the UDP port here if it is already in use for any of the following features:

• A Layer-3 PAA instance
• TWAMP
• Layer-3 Traffic Generator
• Layer-3 Y.1564
• SAT Protocol

When enabled, all test frames are encapsulated with the specified VLAN ID.

Possible values are:

• VLAN (0x8100)
• VLAN (0x88A8)
• VLAN (0x9100)

Note: The Ethertype associated with the selected value displays in a read-only text box.

Applies only when the VLAN 2 header is enabled.

Possible values are:

• VLAN (0x8100)
• VLAN (0x88A8)
• VLAN (0x9100)

Range: 1–1,800 seconds

Default: 60 seconds

Range: 1– 1000 Mbps (1 Gbps). In steps of 0.125 Mbps for rates from 0–12.5 Mbps, and in steps of 1 Mbps for rates greater than or equal to 13 Mbps.

You must select a Maximum Rate that does not exceed the capacity of the outgoing port being used for the test suite. Failure to do so may produce inaccurate results.

Note: The actual transmission rate (TX rate) used during the throughput test will not necessarily match the value of the Maximum Rate parameter since the transmission rate depends on the results obtained from the binary search algorithm.

This parameter also applies to the delay and delay variation test, as well as to the frame loss test.

You must select a Minimum Rate that does not exceed the capacity of the outgoing port being used for the test suite. Failure to do so may produce inaccurate results.

This parameter also applies to the delay and delay variation test, as well as to the frame loss test.

Range: A value greater than zero to the maximum rate.

This parameter also applies to the delay and delay variation test, as well as to the frame loss test.

Default: 0, which means a target of no frame loss is tolerated when defining full throughput, i.e. losing a single frame will cause the test to fail.

Range: 1–1800 seconds

Default: 120 seconds

The delay and delay variation test also uses the Maximum Rate, Minimum Rate, and Fine Stepping values set in the Throughput Settings.

Default: 0, which means a target of no frame loss is tolerated when defining full throughput, i.e., losing a single frame will cause the test to fail.

Range: 1–1800 seconds

Default: 120 seconds

The delay and delay variation test also uses the Maximum Rate, Minimum Rate, and Fine Stepping values set in the Throughput Settings.

Range: 1–10,000 milliseconds

Default: 2,000 milliseconds

Default: 50 bursts

Range: up to 100 bursts

• Failed: An error occurred during the test suite execution.
• Running: The test suite is currently running.
• Stopped: A user stopped the test suite during its execution.
• Completed: The test suite has completed.