Lantronix SISPM1040-3166-L Web User Guide Rev G PDF 14.13 MB - Page 421

Transition Networks SISPM1040-3xxx-L Web User Guide Traffic Policing Test Parameters The purpose of the traffic policing test is to test the service when applying more traffic than the policers allow for. If the policer is color-aware, the following algorithm from the ITU-T Y.1564 Recommendation applies: If EIR < 20% * CIR Green = 100% * CIR Yellow = 25% * CIR + 100% * EIR Else Green = 100% * CIR Yellow = 125% * EIR EndIf If CIR is non-zero, it must be possible to create a flow that hits the policer as green. Otherwise the test is skipped. If the resulting yellow frame rate is non-zero, it must be possible to create a flow that hits the policer as yellow. Otherwise the test is skipped. Note that even though EIR is 0, it must be possible to create a yellow flow for the test not to be skipped. If the policer is color-blind, only one flow will be generated. The rate of that flow is given by the following algorithm from the ITU-T Y.1564 Recommendation: If EIR < 20% * CIR Rate = 125% * CIR + 100% * EIR Else Rate = 100% * CIR + 125% * EIR EndIf 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. 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. Enable : Check this to enable the traffic policing test. Duration : The traffic policing 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. Performance Test Parameters In the service performance Test, green frames are transmitted at CIR, usually for a longer period of time (configured with Duration below) to validate the quality of the service. Execution of the test is similar to a onestep CIR configuration test. Enable : Check this to enable the performance test. 33763 Rev. G https://www.transition.com Page 421 of 496