Lantronix SISPM1040-3166-L Web User Guide Rev G PDF 14.13 MB - Page 430

Transition Networks SISPM1040-3xxx-L Web User Guide VLAN ID : When Type is set to VLAN-based Down-MEP, this field determines the VLAN ID used in the tag. Valid values are 1 - 4095. PCP : When Type is set to VLAN-based Down-MEP, this field determines the PCP value used in the VLAN tag. DEI : When Type is set to VLAN-based Down-MEP, this field determines the DEI value used in the VLAN tag. DMAC : This field determines the destination MAC address used in generation of the Y.1731 OAM frames. This must be a non-zero unicast MAC address. Notice, that it is possible to override this MAC address during start of a particular test. The source MAC address will automatically become the egress port's native MAC address. Note that it is important that the remote end swaps DMAC and SMAC while looping the frame. Frame Sizes : Each sub-test is repeated for every selected frame size. At least one frame size must be checked. By default, all but the jumbo frame size are selected. Throughput Test Parameters Enable : Check to enable the throughput sub-test. The throughput test searches for the maximum rate at which at most a certain percentage of the frames are lost. The throughput test starts at the maximum configured rate and uses a dichotomist algorithm (binary search) to find the optimum rate. The trials continue until the difference between a failing and succeeding rate is smaller than the configured accuracy. Trial Duration : The time - in seconds - to transmit Y.1731 TST or LBM frames at one given rate and frame size. This is known as a "trial". Valid range is 1 - 1800 with a default of 60 seconds. Minimum Rate : The minimum rate - in ‰ of the egress port's line rate - to transmit Y.1731 TST or LBM frames at. If a trial fails at this rate, the test fails. Valid range is 1 - 1000‰ with a default of 800 ‰ of the line rate. Maximum Rate : The maximum rate - in ‰ of the egress port's line rate - transmit Y.1731 TST or LBM frames at while searching for maximum throughput. This is the rate that the search starts at. Valid range is 1 - 1000 with a default of 1000 ‰ of the line rate. Accuracy : This specifies the stop criterion for the search for a maximum throughput rate. When the difference between a failing and succeeding rate is smaller than the accuracy, the search stops and the succeeding rate becomes the result. Valid range is 1 - 1000 with a default of 2 ‰ of the line rate. Allowed Frame Loss : In some cases, it may be acceptable to have loss on a connection. The allowed loss can be specified with this parameter. The loss is measured in ‰ of the number of transmitted frames during a trial, so if allowed loss is set to e.g. 1 ‰ and 1000 frames is transmitted during a trial, the trial will be considered successful if 999 or 1000 frames return to the transmitter. Valid range is from 0 to 100 with a default of 0 ‰ of the number of transmitted frames. 33763 Rev. G https://www.transition.com Page 430 of 496