Huawei Quidway S3000 Series - Page 36

Operation Manual - STP
Quidway S3000 Series Ethernet Switches Chapter 1 RSTP Configuration
2-12
Table2-2 Configure the MST region for a switch
Operation Command
Configure MST region name region-name name
Restore the default MST region name undo region-name
Configure VLAN mapping table instance instance-id vlan vlan-list
Restore the default VLAN mapping table undo instance
Configure the MSTP revision level of MST region revision-level level
Restore the MSTP revision level of MST region undo revision-level
An MST region can contain up to 17 spanning tree instances, among which the
Instance 0 is IST and the Instances 1 through 16 are MSTIs. Upon the completion of the
above configurations, the current switch is put into a specified MST region. Note that
two switches belong to the same MST region only if they have been configured with the
same MST region name, STI-VLAN mapping tables of an MST region, and the MST
region revision level.
Configuring the related parameters, especially the VLAN mapping table, of the MST
region, will lead to the recalculation of spanning tree and network topology flapping. To
bate such flapping, MSTP triggers to recalculate the spanning tree according to the
configurations only if one of the following conditions is met:
z The user manually activates the configured parameters related to the MST region,
using the active region-configuration command.
z The user enables MSTP, using the stp enable command.
By default, the MST region name is the first switch MAC address, all the VLANs in the
MST region are mapped to the STI 0, and the MSTP region revision level is 0. You can
restore the default settings of MST region, using the undo stp region-configuration
command in system view.
III. Activate the MST Region Configuration,and exit the MST Region View
Perform the following configuration in MST region view.
Table2-3 Activate the MST Region Configuration and exit the MST Region View
Operation Command
Show the configuration information of the MST region under
revision (from MST region view)
check region-configuration
Manually activate the MST region configuration (from MST
region view)
active region-configuration
Exit MST region view (from MST region view) quit