The loss-measure single-ended local-ratio-threshold command sets alarm thresholds for the near-end frame loss rate in proactive single-ended frame loss measurement.
The undo loss-measure single-ended local-ratio-threshold command deletes alarm thresholds of the near-end frame loss rate in proactive single-ended frame loss measurement.
By default, no alarm threshold is set for the near-end frame loss rate in proactive single-ended frame loss measurement.
loss-measure single-ended local-ratio-threshold mep mep-id upper-limit upper-limit lower-limit lower-limit [ 8021p 8021p-value ]
loss-measure single-ended local-ratio-threshold test-id test-id-value upper-limit upper-limit lower-limit lower-limit
undo loss-measure single-ended local-ratio-threshold mep mep-id [ upper-limit upper-limit lower-limit lower-limit ] [ 8021p 8021p-value ]
undo loss-measure single-ended local-ratio-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 the near-end frame loss rate. |
The value is a string of 1 to 8 case-insensitive characters, spaces not supported. |
| lower-limit lower-limit |
Specifies the lower threshold of the near-end frame loss rate. |
The value is a string of 1 to 8 case-insensitive characters, spaces not supported. The lower threshold must be less than or equal to the upper threshold. |
| 8021p 8021p-value |
Specifies a priority of frames in proactive single-ended frame loss measurement. 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 a string of 1 to 4294967295 characters. |
| mep mep-id |
Specifies the ID of a MEP. |
The value is an integer in the range 1 to 8191. |
Usage Scenario
Ethernet frame loss measurement (ETH-LM) enables a local MEP and its RMEP to exchange ETH-LM frames to collect frame loss statistics on E2E links. ETH-LM modes are classified into near-end ETH-LM and far-end ETH-LM. Near-end ETH-LM applies to an inbound interface, and far-end ETH-LM applies to an outbound interface on a MEP. ETH-LM counts errored frame seconds to determine the duration for which a link is unavailable.
The loss-measure single-ended local-ratio-threshold command sets upper and lower thresholds for the near-end frame loss rate in proactive single-ended frame loss measurement. If the near-end frame loss rate exceeds the set upper threshold, an alarm is generated and sent to the NMS. A network administrator uses the alarm information to rectify the fault and ensure service quality. To set the upper and lower thresholds for the near-end packet loss rate in single-ended frame loss measurement, run the loss-measure single-ended local-ratio-threshold command. If thresholds are set on a specified MEP and the near-end packet loss rate 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 near-end packet loss rate 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> system-view [~HUAWEI] mpls [*HUAWEI-mpls] quit [*HUAWEI] mpls l2vpn [*HUAWEI-l2vpn] quit [*HUAWEI] interface GigabitEthernet 0/1/1 [*HUAWEI-GigabitEthernet0/1/1] undo shutdown [*HUAWEI-GigabitEthernet0/1/1] mpls l2vc 2.2.2.2 100 [*HUAWEI-GigabitEthernet0/1/1] quit [*HUAWEI] cfm enable [*HUAWEI] cfm md md1 [*HUAWEI-md-md1] ma ma1 [*HUAWEI-md-md1-ma-ma1] map mpls l2vc 2.2.2.2 100 raw [*HUAWEI-md-md1-ma-ma1] mep mep-id 1 interface GigabitEthernet0/1/1 inward [*HUAWEI-md-md1-ma-ma1] test-id 1 mep 1 mac 00e0-fc12-7890 [*HUAWEI-md-md1-ma-ma1] loss-measure single-ended local-ratio-threshold test-id 1 upper-limit 80 lower-limit 65
<HUAWEI> system-view [~HUAWEI] mpls [*HUAWEI-mpls] quit [*HUAWEI] mpls l2vpn [*HUAWEI-l2vpn] quit [*HUAWEI] interface GigabitEthernet 0/1/1 [*HUAWEI-GigabitEthernet0/1/1] undo shutdown [*HUAWEI-GigabitEthernet0/1/1] mpls l2vc 2.2.2.2 100 [*HUAWEI-GigabitEthernet0/1/1] quit [*HUAWEI] cfm enable [*HUAWEI] cfm md md1 [*HUAWEI-md-md1] ma ma1 [*HUAWEI-md-md1-ma-ma1] map mpls l2vc 2.2.2.2 100 raw [*HUAWEI-md-md1-ma-ma1] mep mep-id 1 interface GigabitEthernet0/1/1 inward [*HUAWEI-md-md1-ma-ma1] test-id 1 mep 1 mac 00e0-fc12-7890 [*HUAWEI-md-md1-ma-ma1] loss-measure single-ended local-ratio-threshold mep 1 upper-limit 72.4 lower-limit 60.1150