In VLAN networking, CFM is enabled to monitor link connectivity. If accurate frame loss measurement needs to be performed for a link, dual-ended frame loss measurement can be configured to monitor the quality of the link.
Dual-ended frame loss measurement in VLAN networking is carried out continuously to permit proactive reporting of frame loss or performance results.
Dual-ended frame loss measurement in VLAN networking is usually deployed on end-to-end MEPs. Frame loss statistics are collected based on the transmit and receive counters carried by CCMs. Dual-ended frame loss measurement can be successfully performed only when the remote MEP is in the Up state.
Run system-view
The system view is displayed.
(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.
Run cfm md md-name
The MD view is displayed.
Run ma ma-name
The MA view is displayed.
Run mep mep-id
The MEP is configured.
Run remote-mep mep-id mep-id
The remote MEP ID is configured.
The CCM transmission function is enabled.
Run remote-mep ccm-receive [ mep-id mep-id ] enable
The CCM reception function is enabled.
Run test-id test-id [ testid-file ]mep mep-id [ description description ]
The test instance is configured on the device.
(Optional) Run loss-measure dual-ended local-ratio-threshold mep-id 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-id 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 configured for a VLAN.
Run commit
The configuration is committed.
Run the display y1731 statistic-type dual-loss [ test-id test-id-value ] [ count count-value ] command on the devices that initiates dual-ended frame loss measurement to check statistics about dual-ended frame loss.