The erps ring command creates an ERPS ring and displays the view of the ERPS ring, or displays the view of a specific ERPS ring.
The undo erps ring command deletes the created ERPS ring.
By default, no ERPS ring is created on the device.
Usage Scenario
Ethernet Ring Protection Switching (ERPS) is a standard protocol issued by the ITU-T to prevent loops on ring networks. ERPS provides carrier-class reliability with a fast convergence speed. ERPS takes effect on a ring network if all devices on a ring network support it.
Follow-up Procedure
Run the control-vlan (ERPS ring view) command to configure a control VLAN for the ERPS ring, and run the protected-instance (ERP ring view) command to configure an ERP instance for the ERPS ring.
Precautions
If an ERPS ring needs to be deleted, ensure that no interfaces are added to the ERPS ring. If any interface is added to the ERPS ring, a message is displayed when the ERPS ring is being deleted. In this case, run the undo erps ring command in the interface view or the undo port command in the ERPS ring view to remove the interface. and run the undo erps ring command to delete the ERPS ring.