In EVPN networking, the clock frequencies between the two ends are not synchronized and CFM is enabled to monitor link connectivity. If the bidirectional delay measurement needs to be performed for a link, two-way frame delay measurement can be configured to monitor the quality of the link.
To implement singular or periodic two-way frame delay measurement for an EVPN instance or an AC, configure on-demand two-way frame delay measurement in EVPN networking.
To implement continual two-way frame delay measurement for an EVPN instance, configure proactive two-way frame delay measurement in EVPN networking.
Perform the following steps on the devices at both ends of an AC.
Run system-view
The system view is displayed.
Run cfm md md-name
The MD view is displayed.
Run ma ma-name
The MA view is displayed.
Associate the MA with a service.
Run mep mep-id mep-id interface interface-type interface-number inward
The MEP is configured.
Run remote-mep mep-id mep-id
The remote MEP ID is configured.
(Optional) Run mep ccm-send [ mep-id mep-id ] enable
The CCM transmission function is enabled.
(Optional) Run remote-mep ccm-receive [ mep-id mep-id ] enable
The CCM reception function is enabled.
Configure a test instance.
To configure a test instance on the receiving device on an AC where two-way frame delay measurement will be implemented, run the test-idtest-id [ testid-file ]mep mep-id [ 8021p 8021p-value ] [ descriptiondescription ] command.
To configure a test instance on the transmitting device on an AC where two-way frame delay measurement will be implemented, run the test-idtest-id [ testid-file ]mepmep-id [ macmac-address | remote-mepmep-id ] [ 8021p8021p-value ] [ descriptiondescription ] command.
On the receiving device on an AC where on-demand two-way frame delay measurement will be implemented, run delay-measure two-way receivetest-idtest-id
The DMM reception function is configured on the device.
On the transmitting device on an AC where on-demand two-way frame delay measurement will be implemented, run delay-measure two-waysendtest-idtest-id } interval { 1000 | 10000 } countcount-value
On-demand two-way frame delay measurement is configured for an AC.
Run commit
The configuration is committed.
Perform the following steps on the devices at both ends of an AC where on-demand two-way frame delay measurement will be implemented:
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 mapevpnvpn-instanceevpn-instance-name on PE.
The MA is bound to a specified EVPN instance.
Run mep mep-id mep-id interface interface-type interface-number inward
The MEP is configured.
Run remote-mep mep-id mep-id
The remote MEP ID is configured.
(Optional) Run mep ccm-send [ mep-id mep-id ] enable
The CCM transmission function is enabled.
(Optional) Run remote-mep ccm-receive [ mep-id mep-id ] enable
The CCM reception function is enabled.
Upper and lower thresholds are set for two-way frame jitter in proactive two-way frame delay measurement based on a specified MEP.
Upper and lower thresholds are set for two-way frame delay in proactive two-way frame delay measurement based on a specified test instance.
Upper and lower thresholds are set for two-way frame jitter in proactive two-way frame delay measurement based on a specified MEP.
Upper and lower thresholds are set for two-way frame jitter in proactive two-way frame delay measurement based on a specified test instance.
Configure a test instance.
To configure a test instance on the receiving device on an AC where two-way frame delay measurement will be implemented, run the test-idtest-id [ testid-file ]mep mep-id [ 8021p 8021p-value ] [ descriptiondescription ] command.
To configure a test instance on the transmitting device on an AC where two-way frame delay measurement will be implemented, run the test-idtest-id [ testid-file ]mepmep-id [ macmac-address | remote-mepmep-id ] [ 8021p8021p-value ] [ descriptiondescription ] command.
On the receiving device on an AC where proactive two-way frame delay measurement will be implemented, run delay-measure two-way receivetest-idtest-id
The DMM reception function is configured on the device.
On the transmitting device on an AC where proactive two-way frame delay measurement will be implemented, run delay-measure two-way continual sendtest-id test-id-value interval interval-value [ period period ]
Proactive two-way frame delay measurement is configured for a PW.
Run commit
The configuration is committed.
Run the display y1731 statistic-type twoway-delay [ test-id test-id-value ] [ count count-value ] command on the device that initiates two-way frame delay measurement to check statistics about the delay in bidirectional frame transmission.