Configuring One-way Frame Delay Measurement in BD EVPN Networking

In BD EVPN networking, the clock frequencies between the two ends are synchronized and CFM is enabled to monitor link connectivity. If the unidirectional delay measurement needs to be performed for a link, one-way frame delay measurement can be configured to monitor the quality of the link.

Context

One-way frame delay measurement in BD EVPN networking can be either on-demand or proactive. 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.

To implement singular or periodic one-way frame delay measurement for a BD EVPN instance or an AC, configure on-demand one-way frame delay measurement in BD EVPN networking.
To implement continual one-way frame delay measurement for a BD EVPN instance or an AC, configure proactive one-way frame delay measurement in BD EVPN networking.

Procedure

Configure on-demand one-way frame delay measurement for an AC.
1. Perform the following steps on the devices at both ends of an AC where on-demand one-way frame delay measurement will be implemented:
  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. Associate the MA with a service.
    - Run map vlan vlan-id on CE.
      
      The MA is bound to a specified VLAN.
    - Run map bridge-domain bd-id on PE
      
      The MA is bound to a specified BD.
  5. Run mep mep-id interface interface-type interface-number inward
    
    The MEP is configured.
  6. Run remote-mep ccm-receive [ mep-id mep-id ] enable
    
    The CCM reception function is enabled.
  7. Run mep ccm-send enable
    
    The CCM transmission function is enabled.
  8. Run remote-mep ccm-receive [ mep-id mep-id ] enable
    
    The CCM reception function is enabled.
2. Configure a test instance.
  1. On the receiving device on an AC where on-demand one-way frame delay measurement will be implemented, run test-idtest-id [ testid-file ]mep mep-id [ 8021p 8021p-value ] [ descriptiondescription ]
    
    A test instance is configured on the device.
  2. On the transmitting device on an ACwhere one-way frame delay measurement will be implemented, run test-idtest-id [ testid-file ]mepmep-id [ macmac-address | remote-mepmep-id ] [ 8021p8021p-value ] [ descriptiondescription ]
    
    A test instance is configured on the device.
3. On the receiving device on an AC where on-demand one-way frame delay measurement will be implemented, run delay-measure one-way receive test-id test-id
  
  The 1DM reception function is configured on the device.
4. On the transmitting device on an AC where one-way frame delay measurement will be implemented, run delay-measure one-way send test-id test-id interval { 1000 | 10000 } count count-value
  
  On-demand one-way frame delay measurement is configured for an AC.
5. Run commit
  
  The configuration is committed.
Perform the following steps on the devices at the ends of an AC where proactive one-way frame delay measurement will be implemented:
1. Perform the following steps:
  1. Run system-view
    
    The system view is displayed.
  2. (Optional) Run y1731 pm-mode enable
    
    Performance management (PM) to manage Y.1731 proactive performance statistics is enabled. PM saves the statistics to generated statistics files and then sends the files to the NMS.
  3. Run cfm md md-name
    
    The MD view is displayed.
  4. Run ma ma-name
    
    The MA view is displayed.
  5. Run mapbridge-domainbd-id
    
    The MA is bound to a specified BD.
  6. Run mep mep-id
    
    The MEP is configured.
  7. Run remote-mep mep-id mep-id
    
    The remote MEP ID is configured.
  8. Run mep ccm-send enable
    
    The CCM transmission function is enabled.
  9. Run remote-mep ccm-receive [ mep-id mep-id ] enable
    
    The CCM reception function is enabled.
  10. (Optional) Run delay-measure one-way delay-threshold mep-id mep-id upper-limit upper-limit lower-limit lower-limit [ 8021p 8021p-value ]
    
    Lower and upper thresholds are set for one-way frame delay.
  11. (Optional) Run delay-measure one-way variation-threshold mep-id mep-id upper-limit upper-limit lower-limit lower-limit [ 8021p 8021p-value ]
    
    Lower and upper thresholds are set for one-way frame jitter.
2. Configure a test instance.
  1. On the receiving device on an AC where one-way frame delay measurement will be implemented:
    
    The measurement on an AC:
    
    Run test-idtest-id [ testid-file ]mep mep-id [ 8021p 8021p-value ] [ descriptiondescription ]
    
    A test instance is configured on the device.
  2. On the transmitting device on an AC where one-way frame delay measurement will be implemented, run test-idtest-id [ testid-file ]mepmep-id [ macmac-address | remote-mepmep-id ] [ 8021p8021p-value ] [ descriptiondescription ]
    
    A test instance is configured on the device.
3. On the receiving device on an AC where proactive one-way frame delay measurement will be implemented, run delay-measure one-way continual receive test-id test-id-value
  
  The 1DM reception function is configured on the device.
4. On the transmitting device on an AC where proactive one-way frame delay measurement will be implemented, run delay-measure one-way continual send test-id test-id-value interval interval-value
  
  Proactive one-way frame delay measurement is configured for an AC.
5. Run commit
  
  The configuration is committed.

Verifying the Configuration

Run the display y1731 statistic-type oneway-delay [ test-id test-id-value ] [ count count-value ] command on the device that initiates one-way frame delay measurement to check statistics about the delay in unidirectional frame transmission.