erps ring

Function

The erps ring command creates an ERPS ring and displays the view of the ERPS ring, or directly displays the view of an existing ERPS ring.

The undo erps ring command deletes a created ERPS ring.

By default, no ERPS ring is created.

Format

erps ring ring-id

undo erps ring ring-id

Parameters

Parameter	Description	Value
ring-id	Specifies the ID of an ERPS ring.	The value is an integer that ranges from 1 to 255.

Views

System view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

Ethernet Ring Protection Switching (ERPS) is a standard protocol issued by the ITU-T to prevent loops on ring networks. ERPS implements fast convergence of carrier-class reliability standards. It allows all ERPS-capable devices on a ring network to communicate.

To enable ERPS on the device, run the erps ring command to create an ERPS ring and enter the ERPS ring view.

To configure parameters such as the control VLAN and the protected instance for an ERPS ring, run the erps ring command to enter the ERPS ring view.

Follow-up Procedure

Run the control-vlan (ERPS ring view) command to configure a control VLAN for the ERPS ring.

Run the protected-instance (ERPS ring view) command to configure an ERP instance for the ERPS ring.

Precautions

To delete an ERPS ring, ensure that no ports are added to the ERPS ring. If any port is added to the ERPS ring, the system displays a message indicating a failure to delete the ERPS ring. To delete an ERPS ring where ports are added, run the undo erps ring command in the interface view or the undo port command in the ERPS ring view to remove the port, and run the undo erps ring command to delete the ERPS ring.

Example

# Create ERPS ring 1.

<HUAWEI> system-view
[HUAWEI] erps ring 1
[HUAWEI-erps-ring1]