Huawei Quidway S3500 Series Operation Manual page 443

Operation Manual - STP
Quidway S3500 Series Ethernet Switches
II. Configure the MST Region
Perform the following configuration in MST region view.
Table 1-2 Configure the MST region for a switch
Configure MST region name
Restore the default MST region name
Configure VLAN mapping table
Restore the default VLAN mapping table
Configure the MSTP revision level of MST region
Restore the MSTP revision level of MST region
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:
The user manually activates the configured parameters related to the MST region,
using the active region-configuration command.
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.
Table 1-3 Activate the MST Region Configuration and exit the MST Region View
Show the configuration information of the MST
region under revision (from MST region view)
Operation
Operation
Huawei Technologies Proprietary
1-11
Chapter 1 MSTP Region-configuration
Command
region-name name
undo region-name
instance instance-id vlan
vlan-list
undo instance
revision-level level
undo revision-level
Command
check region-configuration