Lantronix SISPM1040-3166-L Web User Guide Rev G PDF 14.13 MB - Page 420

Transition Networks SISPM1040-3xxx-L Web User Guide DM Interval : A Y.1731 1DM or DMM frame (depending on type of test) is transmitted every so many milliseconds, in order to perform delay measurements (DM). Select the number so that at least three DM frames are transmitted during a trial in order to obtain useful delay variation results. After each trial the measured FTD and FDV is compared against the SAC's Acceptable FLR, FTD, and FDV. Valid range is from 100 to 10000 in steps of 100 milliseconds with a default of 500 milliseconds. A value of 0 effectively disables transmission of DM frames, which thereby indirectly disables the check against the SAC. Step Count : The number of steps (trials) used to reach CIR. For example, if Step Count is set to 4, four trials are executed. The first runs at 25% of CIR, the second at 50%, then 75%, and finally 100%. A step count of 1 corresponds to executing Y.1564's A.1 test (Simple CIR Validation Test). A step count greater than 1 corresponds to executing Y.1564's A.2 test (Step Load CIR Test). Valid range is 1 - 1000 with a default of 4 steps. EIR Configuration Test Parameters The purpose of the EIR configuration test is to test the policer's configured EIR. If EIR is 0 or the policer is of type Single Leaky Bucket, the test is skipped. If the policer is color-aware, we must be able to hit the policer with both a green and a yellow flow unless CIR is zero, where the green flow is not necessary. If not, the test is skipped along with a description of why. The green flow will have a rate of CIR and the yellow flow will have a rate of EIR. For the green flow only, measure IR, FLR, FTD, and FDV and compare it to the SAC. If it meets the SAC, the test passes, otherwise it fails. IR and FLR for the yellow flow are computed for reporting purposes, but are not matched against the SAC, and therefore can't make the test fail. If the policer is color-blind, only one flow will be generated. Since - from a policer perspective - it's equally good to use a green and a yellow flow towards the policer, either colored flow will work. A green flow will be chosen if it's possible to create it. The rate of the flow will be CIR + EIR. If the ingress flow is green, measure IR and FLR and compare it to the SAC. If the ingress flow is yellow, measure IR and FLR only for reporting purposes, since the test can fail on yellow frames. Also measure FTD and FDV and compare it to the SAC. If the SAC is met, the test passes, otherwise it fails. The EIR configuration test execution follows the description in Trial Execution above. Enable : Check this to enable the EIR configuration test. Duration : The EIR configuration test is executed in one single trial, whose duration is configured with this parameter. Valid range is 1 - 3600 with a default of 10 seconds. DM Interval : A Y.1731 1DM or DMM frame (depending on type of test) is transmitted every so many milliseconds, in order to perform delay measurements (DM). Select the number so that at least three DM frames are transmitted during a trial in order to obtain useful delay variation results. 33763 Rev. G https://www.transition.com Page 420 of 496