The delay-measure two-way variation-threshold command sets alarm thresholds for two-way frame jitter in proactive two-way frame delay measurement.
The undo delay-measure two-way variation-threshold command deletes the alarm thresholds of two-way frame jitter in proactive two-way frame delay measurement.
By default, no alarm threshold is set for two-way frame jitter in proactive two-way frame delay measurement.
delay-measure two-way variation-threshold mep mep-id upper-limit upper-limit lower-limit lower-limit [ 8021p 8021p-value ]
delay-measure two-way variation-threshold test-id test-id-value upper-limit upper-limit lower-limit lower-limit
undo delay-measure two-way variation-threshold mep mep-id [ upper-limit upper-limit lower-limit lower-limit ] [ 8021p 8021p-value ]
undo delay-measure two-way variation-threshold test-id test-id-value [ upper-limit upper-limit lower-limit lower-limit ]
| Parameter | Description | Value |
|---|---|---|
| upper-limit upper-limit |
Specifies the upper threshold of two-way frame jitter. |
The value is an integer ranging from 0 to 4294967295, in microseconds. |
| lower-limit lower-limit |
Specifies the lower threshold of two-way frame jitter. |
The value is an integer ranging from 0 to 4294967295, in microseconds. The lower threshold must be less than or equal to the upper threshold. |
| 8021p 8021p-value |
Specifies a priority of frames of two-way frame jitter. This parameter applies to VLL scenarios. |
The value is an integer ranging from 0 to 7. |
| test-id test-id-value |
Specifies the ID of a test instance. |
The value is an integer ranging from 1 to 4294967295. |
| mep mep-id |
Specifies the ID of a MEP. |
The value is an integer in the range 1 to 8191. |
Usage Scenario
When proactive two-way frame jitter measurement is used to measure the jitter and evaluate the quality of links between MEPs, run the delay-measure two-way variation-threshold command to set the upper and lower threshold for jitter statistics. If thresholds are set on a specified MEP and the link jitter exceeds the upper threshold, an alarm is generated to alert a network administrator to adjust links to ensure service quality. If thresholds are set in a specified instance, the link jitter exceeds the upper threshold or is lower than the lower threshold, the number of threshold-crossing events is counted. The display y1731 period-data command displays the number of threshold-crossing times.
Prerequisites
The cfm md command has been executed to configure an MD. The ma command has been executed to configure an MA. The mep mep-id command has been executed to configure MEPs.
[~HUAWEI] mpls [~HUAWEI-mpls] quit [~HUAWEI] mpls l2vpn [~HUAWEI-l2vpn] quit [~HUAWEI] interface GigabitEthernet 0/1/9 [~HUAWEI-GigabitEthernet0/1/9] mpls l2vc 2.2.2.3 1001 [*HUAWEI-GigabitEthernet0/1/9] quit [*HUAWEI] cfm enable Info: Succeeded in enabling CFM. [*HUAWEI] cfm md md1 [*HUAWEI-md-md1] ma ma2 [*HUAWEI-md-md1-ma-ma2] map mpls l2vc 2.2.2.3 1001 raw [*HUAWEI-md-md1-ma-ma2] mep mep-id 1 interface GigabitEthernet 0/1/9 inward [*HUAWEI-md-md1-ma-ma2] delay-measure two-way variation-threshold mep 1 upper-limit 400 lower-limit 200