sub-ring

Function

The sub-ring command configures an ERPS ring as a sub-ring.

The undo sub-ring command restores the default configuration.

By default, all ERPS rings are major rings.

Format

sub-ring

undo sub-ring

Parameters

None

Views

ERPS ring view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

ERPS has two versions: ERPSv1 and ERPSv2. ERPSv2 supports multi-ring topologies such as intersecting ring topologies in addition to single-ring topologies.

To deploy ERPS on a multi-ring network, run the sub-ring command to configure some rings as sub-rings.

Major rings are closed, and sub-rings are open.

Prerequisites

The version v2 command has been executed to specify ERPSv2.
The ERPS ring does not have any port. If the ERPS ring has a port, run the undo erps ring ring-id or undo port interface-type interface-number command to delete the port from the ERPS ring.

Precautions

If a sub-ring uses the VC mode to transmit RAPS PDUs, you must run the virtual-channel disable command to restore the RAPS PDU transmission mode to NVC before running the undo sub-ring command to restore the sub-ring to a major ring.

Example

# Configure ERPS ring 5 as a sub-ring.

<HUAWEI> system-view
[HUAWEI] erps ring 5
[HUAWEI-erps-ring5] sub-ring