Step 1.   Manual synchronization should be performed on the active device

before SP rollback.

Step 2.    Check the synchronization report on the active device. If the

synchronization is successful, continue the rollback. If it fails, locate the failure cause and resolve the configuration differences between the two devices.

Step 3.    Back up the active and standby device configuration to avoid

configuration loss.

Step 4.    If preemption is enabled, disable it on both devices to prevent

active/standby switchover issues during the rollback.

Step 5.    Unplug the service interface cable of the standby device first, then

unplug the HA cable (do not disable the HA feature) before rolling back the SP.

Step 6.    If the rollback fails, please immediately contact a technical support

representative for troubleshooting. The other device carries the services and is not affected.

Step 7.   After the SP is rolled back on the standby device, connect the HA and service interface cables. Click Sync Now on the active device and view the

report to check whether synchronization is completed on the active device.

Step 8.   After synchronization is completed, perform active/standby

switchover and check the service status. If synchronization fails, please follow the prompts to troubleshoot issues.

Step 9.    If the services are normal, roll back on another device (the current standby device). Unplug the service interface cable, then the HA cable of the standby device (do not disable the HA feature), and then roll back the SP.

Step 10.  If the rollback fails, contact a technical support representative for troubleshooting.

Step 11.  After the SP is rolled back, connect the HA cable, then the production interface cable, click Sync Now on the active device and view the report to

check whether synchronization is completed on the active device. If the synchronization fails, perform manual synchronization. If it still fails,

troubleshoot issues.

Step 12. If the synchronization is successful, check the service status.