1-16
In a network containing switches with both GVRP and MSTP enabled, GVRP messages travel along
the CIST. If you want to advertise a VLAN through GVRP, be sure to map the VLAN to the CIST (MSTI
0) when configuring the VLAN-to-MSTI mapping table.
Configuration Prerequisites
The role (root, branch, or leaf) of each switch in each MSTI is determined.
Configuring an MST Region
Configuration procedure
Follow these steps to configure an MST region:
To do... Use the command... Remarks
Enter system view
system-view
—
Enter MST region view
stp region-configuration
—
Configure the name of the MST
region
region-name name
Required
The default MST region name of a
switch is its MAC address.
instance instance-id vlan
vlan-list
Configure the VLAN-to-MSTI
mapping table for the MST region
vlan-mapping modulo
modulo
Required
Both commands can be used to
configure VLAN-to-MSTI mapping
tables.
By default, all VLANs in an MST
region are mapped to MSTI 0.
Configure the MSTP revision
level for the MST region
revision-level level
Required
The default revision level of an
MST region is level 0.
Activate the configuration of the
MST region manually
active
region-configuration
Required
Display the configuration of the
current MST region
check
region-configuration
Optional
Display the currently valid
configuration of the MST region
display stp
region-configuration
Available in any view
NTDP packets sent by devices in a cluster can only be transmitted within the MSTI where the
management VLAN of the cluster resides.
Configuring MST region-related parameters (especially the VLAN-to-MSTI mapping table) results in
spanning tree recalculation and network topology jitter. To reduce network topology jitter caused by the
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