Lantronix SISPM1040-3166-L Web User Guide Rev G PDF 14.13 MB - Page 419

Service Acceptance Criteria SAC, Acceptable FLR, Acceptable FTD, Acceptable FDV, CIR Configuration

Page 419 highlights

Transition Networks SISPM1040-3xxx-L Web User Guide Service Acceptance Criteria (SAC) After each test trial, the trial's measurements are evaluated with respect to a set of Service Acceptance Criteria parameters. If the trial fails, test execution is aborted, and the whole test is considered failing. Otherwise, execution proceeds to the next subtest. Acceptable FLR : Defines the acceptable Frame Loss Ratio (FLR) measured in per mille. Setting this to 1000 effectively disables this check. The number is used in all enabled subtests. Only delay measurement PDUs and green test traffic undergo an FLR check. If the number of looped green frames differs from the number of transmitted green frames by more than the 'Acceptable FLR', the test is considered failing, otherwise passing. Valid range is 0 - 1000 with a default of 0‰. Acceptable FTD : Defines the acceptable Frame Transfer Delay, measured in milliseconds. If the highest observed frame transfer delay exceeds this, the test fails. Valid range is 0 - 10000 with a default of 0 milliseconds. A value of 0 disables this check. Acceptable FDV : Defines the acceptable Frame Delay Variation, measured in milliseconds. If the highest observed frame delay variation exceeds this, the test fails. Valid range is 0 - 10000 with a default of 0 milliseconds. A value of 0 disables this check. CIR Configuration Test Parameters In the CIR configuration test, frames are transmitted in steps of the policer's configured CIR. The 'Step Count' parameter determines the number of steps (trials) it takes to reach CIR. If CIR is zero, the test is skipped. If the policer is color-aware and it's impossible to create a flow that is green when it hits the policer, the test is skipped along with a description of why. If the sum of all ECEs under test's test traffic exceeds the UNI's link speed, the test is skipped. If the policer is color-blind and it's possible to create a flow that is green when it hits the policer, use that flow. If the policer is color-blind and it's impossible to create a flow that is green when it hits the policer, use a yellow flow. Step load is used for the CIR configuration test to gradually reach CIR. When step count is configured to 4 (default), a test flow will transmit at 25%, 50%, 75%, and 100% of CIR. For each step, the received IR, FLR, FTD, and FDV is measured and compared against the SAC, and the test fails if either of these doesn't meet the SAC. If 100% of CIR has been reached successfully, the CIR test succeeds. Only green flows have their FLR compared to the SAC, since it's not possible to fail on yellow flows. The general steps of a trial execution are provided below: Trial Execution: For each trial, transmit a green, a yellow or both a green and yellow test flows per ECE under test for '(Step) Duration' seconds, after which the profile's Dwell Time is observed, before counters are read. The green traffic counters are evaluated against the SAC's Acceptable FLR. During a trial, delay measurements (DM) are performed and evaluated according to the description in DM Interval. Enable : Check to enable the CIR configuration test. Step Duration : Each step in the CIR configuration test applies test traffic for this number of seconds. Valid range is 1 - 3600 with a default of 10 seconds. 33763 Rev. G https://www.transition.com Page 419 of 496

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Transition Networks
SISPM1040-3xxx-L Web User Guide
33763 Rev. G
Page
419
of
496
Service Acceptance Criteria (SAC)
After each test trial, the trial's measurements are evaluated with respect to a set of Service Acceptance Criteria
parameters. If the trial fails, test execution is aborted, and the whole test is considered failing. Otherwise,
execution proceeds to the next subtest.
Acceptable FLR
: Defines the acceptable Frame Loss Ratio (FLR) measured in per mille. Setting this to 1000
effectively disables this check. The number is used in all enabled subtests. Only delay measurement PDUs and
green test traffic undergo an FLR check. If the number of looped green frames differs from the number of
transmitted green frames by more than the 'Acceptable FLR', the test is considered failing, otherwise passing.
Valid range is 0 -
1000 with a default of 0‰.
Acceptable FTD
: Defines the acceptable Frame Transfer Delay, measured in milliseconds. If the highest observed
frame transfer delay exceeds this, the test fails. Valid range is 0 - 10000 with a default of 0 milliseconds. A value
of 0 disables this check.
Acceptable FDV
: Defines the acceptable Frame Delay Variation, measured in milliseconds. If the highest
observed frame delay variation exceeds this, the test fails. Valid range is 0 - 10000 with a default of 0
milliseconds. A value of 0 disables this check.
CIR Configuration Test Parameters
In the CIR configuration test, frames are transmitted in steps of the policer's configured CIR. The 'Step Count'
parameter determines the number of steps (trials) it takes to reach CIR. If CIR is zero, the test is skipped.
If the policer is color-aware and it's impossible to create a flow that is green when it hits the policer, the test is
skipped along with a description of why.
If the sum of all ECEs under test's test traffic exceeds the UNI's link speed, the test is skipped.
If the policer is color-blind and it's possible to create a flow that is green when it hits the policer, use that flow.
If the policer is color-blind and it's impossible to create a flow that is green when it hits the policer, use a yellow
flow.
Step load is used for the CIR configuration test to gradually reach CIR. When step count is configured to 4
(default), a test flow will transmit at 25%, 50%, 75%, and 100% of CIR. For each step, the received IR, FLR, FTD,
and FDV is measured and compared against the SAC, and the test fails if either of these
doesn’t
meet the SAC.
If 100% of CIR has been reached successfully, the CIR test succeeds. Only green flows have their FLR compared to
the SAC, since it's not possible to fail on yellow flows.
The general steps of a trial execution are provided below:
Trial Execution
: For each trial, transmit a green, a yellow or both a green and yellow test flows per ECE under test
for '(Step) Duration' seconds, after which the profile's Dwell Time is observed, before counters are read. The
green traffic counters are evaluated against the SAC's Acceptable FLR. During a trial, delay measurements (DM)
are performed and evaluated according to the description in DM Interval.
Enable
: Check to enable the CIR configuration test.
Step
Duration
: Each step in the CIR configuration test applies test traffic for this number of seconds. Valid range
is 1 - 3600 with a default of 10 seconds.