Single-ended Frame Loss Measurement When an L2VPN Is Connected to an L3VPN

When an L2VPN is connected to an L3VPN, single-ended frame loss measurement is enabled to monitor link quality. This helps prevent CCMs from overloading the network.

Context

Single-ended frame loss measurement measures frame loss on demand or proactively. On-demand single-ended frame loss measurement is manually initiated for diagnosis of frame loss in a limited time. It can be singular or periodic measurement. Proactive single-ended frame loss measurement is performed continuously to permit proactive reporting of frame loss or performance results.

The on-demand mode is manually initiated and allows frame loss statistics to be collected at a time or a specific number of times for diagnosis.
The proactive mode allows frame loss statistics to be collected periodically.

Procedure

Configure on-demand single-ended frame loss measurement.
1. Perform the following steps on the MEP and RMEP:
  1. Run system-view
    
    The system view is displayed.
  2. Run cfm md md-name
    
    The MD view is displayed.
  3. Run ma ma-name
    
    The MA view is displayed.
  4. Run mep mep-id
    
    An outward-facing MEP is configured.
  5. Run remote-mep mep-id mep-id
    
    An RMEP ID is specified.
  6. Run mep ccm-send enable
    
    The MEP is enabled to send CCMs.
  7. Run remote-mep ccm-receive [ mep-id mep-id ] enable
    
    The RMEP is enabled to receive CCMs.
2. Configure a test instance.
  1. On the receiver RMEP, run test-id test-id [ testid-file ]mep mep-id [ description description ]
    
    A test instance is configured.
  2. On the initiator MEP, run test-id test-id [ testid-file ]mep mep-id [ mac mac-address | remote-mepmep-id ] [ description description ]
    
    A test instance is configured.
3. On the receiver RMEP, run loss-measure single-ended receivetest-idtest-id-value
  
  The RMEP is enabled to receive LMMs.
4. On the initiator MEP, run loss-measure single-ended sendtest-idtest-id-valueinterval { 1000 | 10000 } countcount-value
  
  Single-ended frame loss measurement is configured.
5. Run commit
  
  The configuration is committed.
Configure proactive single-ended frame loss measurement.
1. Perform the following steps on the MEP and RMEP:
  1. Run system-view
    
    The system view is displayed.
  2. (Optional) Run y1731 pm-mode enable
    
    Proactive statistics are sent by the performance management (PM) module to an NMS.
  3. Run cfm md md-name
    
    The MD view is displayed.
  4. Run ma ma-name
    
    The MA view is displayed.
  5. Run mep mep-id
    
    A MEP is configured.
  6. Run remote-mep mep-id mep-id
    
    An RMEP ID is specified.
  7. Run mep ccm-send enable
    
    The MEP is enabled to send CCMs.
  8. Run remote-mep ccm-receive [ mep-id mep-id ] enable
    
    The RMEP is enabled to receive CCMs.
  9. (Optional) Run loss-measure single-ended local-ratio-threshold mep mep-id upper-limit upper-limit lower-limit lower-limit [ 8021p 8021p-value ]
    Upper and lower thresholds are set for the near-end frame loss rate in proactive single-ended frame loss measurement based on a specified MEP.
  10. (Optional) Run loss-measure single-ended remote-ratio-threshold mep mep-id upper-limit upper-limit lower-limit lower-limit [ 8021p 8021p-value ]
    Upper and lower thresholds are set for the far-end frame loss rate in proactive single-ended frame loss measurement based on a specified MEP.
2. Configure a test instance.
  1. On the receiver RMEP, run test-id test-id [ testid-file ]mep mep-id [ description description ]
    
    A test instance is configured.
  2. On the initiator MEP, run test-id test-id [ testid-file ]mep mep-id [ mac mac-address | remote-mepmep-id ] [ description description ]
    
    A test instance is configured.
  3. (Optional) Run loss-measure single-ended local-ratio-threshold test-id test-id-value upper-limit upper-limit lower-limit lower-limit
    Upper and lower thresholds are set for the near-end frame loss rate in proactive single-ended frame loss measurement based on a specified test instance.
  4. (Optional) Run loss-measure single-ended remote-ratio-threshold test-id test-id-value upper-limit upper-limit lower-limit lower-limit
    Upper and lower thresholds are set for the far-end frame loss rate in proactive single-ended frame loss measurement based on a specified test instance.
3. On the receiver RMEP, run loss-measure single-ended receive test-id test-id-value
  
  The RMEP is enabled to receive LMMs.
4. On the initiator MEP, run loss-measure single-ended continual send test-id test-id-value interval interval-value [ period period ]
  
  Proactive single-ended frame loss measurement is configured.
5. Run commit
  
  The configuration is committed.

Verifying the Configuration

After completing the configuration, run the display y1731 statistic-type single-loss [ test-id test-id-value ] [ count count-value ] command on the MEP that initiates single-ended frame loss measurement and verify the configuration.