check region-configuration

Function

The check region-configuration command displays the configuration of an MST region such as the region name, revision level, and VLAN mapping table.

Format

check region-configuration

Parameters

None

Views

MST region view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

MSTP divides a switching network into multiple regions, each of which has multiple spanning trees that are independent of each other. Each region is called an MST region and each spanning tree is called a multiple spanning tree instance (MSTI).

Two switching devices belong to the same MST region only when they have the following same configurations:

MST region name
MST region revision level
Mappings between MSTIs and VLANs

To ensure that MST region configurations on each switching device are correct, you are recommended to run the check region-configuration command to check the MST region configurations before running the active region-configuration command. If the MST region configurations are correct, run the active region-configuration command to activate them.

Precautions

By default, VLANs that are not mapped to any instances with non-zero IDs using the instance command are mapped to instance 0.

Example

# Display the configuration of an MST region.

<HUAWEI> system-view

[HUAWEI] stp region-configuration

[HUAWEI-mst-region] check region-configuration
 Admin configuration                                                            
   Format selector    :0                                                        
   Region name        :00b010000001                                             
   Revision level     :0                                                        
                                                                                
   Instance   VLANs Mapped                                                      
      0       1 to 9, 11 to 4094
     16       10

**Table 1** Description of the check region-configuration command output
Item	Description
Format selector	Selection factor defined by MSTP
Region name	Name of the MST region. To configure the name for an MST region, run the region-name command.
Revision level	Revision level of the MST region. To set the revision level of the MST region, run the revision-level command.
Instance VLANs Mapped	Mapping between MSTIs and VLANs. To configure the mapping between MSTIs and VLANs, run the instance or vlan-mapping modulo.