Configuring Dual-ended Frame Loss Measurement in BD EVPN Networking

In BD EVPN networking where CFM is enabled to monitor link connectivity, if accurate frame loss measurement needs to be performed for a link, configure dual-ended frame loss measurement to monitor the quality of the link.

Procedure

Dual-ended frame loss measurement in BD EVPN networking is carried out continuously to allow proactive reporting of frame loss or performance results.

Dual-ended frame loss measurement in BD EVPN networking is deployed on end-to-end MEPs. Frame loss statistics are collected based on the transmit and receive counters carried in CCMs. Dual-ended frame loss measurement can be successfully performed only when the RMEP is in the up state.

Run system-view
The system view is displayed.
(Optional) Run y1731 pm-mode enable
PM is enabled to manage and send Y.1731 proactive performance statistics to the NMS.
Run cfm md md-name
The MD view is displayed.
Run ma ma-name
The MA view is displayed.
Perform the following steps on the devices where the MEP and RMEP reside:
- On the CE, run map vlan vlan-id
  
  The MA is bound to a VLAN.
- On the PE, run map bridge-domain bd-id
  
  The MA is bound to a specified BD instance.
Run mep mep-id mep-id interface interface-type interface-number outward
An MEP is configured.
Run remote-mep mep-id mep-id
An RMEP is configured.
Run mep ccm-send enable
The MEP is enabled to send CCMs.
Run remote-mep ccm-receive [ mep-id mep-id ] enable
The MEP is enabled to receive CCMs from the RMEP.
Run test-id test-id [ testid-file ] mep mep-id [ description description ]
A test instance is configured.
(Optional) Run loss-measure dual-ended local-ratio-threshold mep mep-id upper-limit upper-limit lower-limit lower-limit
Lower and upper thresholds are set for the near-end frame loss rate in dual-ended frame loss measurement.
(Optional) Run loss-measure dual-ended remote-ratio-threshold mep mep-id upper-limit upper-limit lower-limit lower-limit
Lower and upper thresholds are set for the far-end frame loss rate in dual-ended frame loss measurement.
Run loss-measure dual-ended continual test-id test-id-value
Dual-ended frame loss measurement is enabled.
Run commit
The configuration is committed.

Verifying the Configuration

After completing the configuration, run the display y1731 statistic-type dual-loss [ test-id test-id-value ] [ count count-value ] command on the MEP that initiates dual-ended frame loss measurement to check statistics about dual-ended frame loss.