One-Way Frame Delay Measurement When an L2VPN Is Connected to an L3VPN

One-way frame delay measurement can be configured when CFM is enabled for an L2VPN connected to an L3VPN to monitor link connectivity and an MEP has the time synchronized with that on an RMEP.

Context

One-way frame delay measurement can be implemented in either of the following modes: On-demand one-way frame delay measurement is manually initiated for diagnosis of frame transmission delays in a limited time. It can be singular or periodic measurement. Proactive one-way frame delay measurement is carried out continuously to permit proactive reporting of frame transmission delays or performance results.

On-demand mode: is manually initiated and allows delay statistics to be collected at a time or a specified number of times for diagnosis.
Proactive mode: allows delay statistics to be collected periodically.

Procedure

Configure on-demand one-way frame delay 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
    
    The 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.
  8. (Optional) Run delay-measure one-way threshold threshold-value
    An alarm threshold is set for one-way frame delay measurement.
2. Configure a test instance.
  1. On the receiver RMEP, run test-idtest-id [ testid-file ]mep mep-id [ 8021p 8021p-value ] [ descriptiondescription ]
    
    A test instance is configured on the device.
  2. On the initiator MEP, run test-id test-id [ testid-file ]mepmep-id [ macmac-address | remote-mepmep-id ] [ 8021p8021p-value ] [ descriptiondescription ]
    
    A test instance is configured on the device.
3. On the receiver RMEP, run delay-measure one-way receive test-id test-id-value
  
  The RMEP is enabled to receive 1DM messages.
4. On the initiator MEP, run delay-measure one-way send test-id test-id-value interval { 1000 | 10000 } count count-value
  
  One-way frame delay measurement is configured.
5. Run commit
  
  The configuration is committed.
Configure proactive one-way frame delay 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 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
    
    The 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 either of the following commands to set an alarm threshold:
    1. To set the delay threshold for proactive one-way frame delay measurement, run the delay-measure one-way delay-threshold mep mep-id upper-limit upper-limit lower-limit lower-limit command.
    2. To set the delay threshold for one-way frame delay measurement, run the delay-measure one-way threshold threshold-value command.
    The delay-measure one-way delay-threshold and delay-measure one-way threshold commands are mutually exclusive.
  10. (Optional) Run delay-measure one-way variation-threshold mep mep-id upper-limit upper-limit lower-limit lower-limit
    The delay variation threshold is set for proactive one-way frame delay measurement.
2. Configure a test instance.
  1. To configure a test instance on the receiver RMEP, run the test-idtest-id [ testid-file ]mep mep-id [ 8021p 8021p-value ] [ descriptiondescription ] command.
  2. To configure a test instance on the initiator MEP, run the test-idtest-id [ testid-file ]mepmep-id [ macmac-address | remote-mepmep-id ] [ 8021p8021p-value ] [ descriptiondescription ] command.
3. On the receiver RMEP, run delay-measure one-way continual receive test-id test-id-value
  
  The RMEP is enabled to receive 1DM messages.
4. On the initiator MEP, run delay-measure one-way continual send test-id test-id-value interval interval-value
  
  Proactive one-way frame delay measurement is configured.
5. Run commit
  
  The configuration is committed.

Verifying the Configuration

After completing the configuration, run the display y1731 statistic-type oneway-delay [ test-id test-id-value ] [ count count-value ] command on the MEP that initiates one-way frame delay measurement and verify the configuration.