Configuration Prerequisites; Configuring An Mst Region - 3Com 4200G 12-Port Configuration Manual

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...
Enter system view
Enter MST region view
Configure the name of the MST
region
Configure the VLAN-to-MSTI
mapping table for the MST region
Configure the MSTP revision
level for the MST region
Activate the configuration of the
MST region manually
Display the configuration of the
current MST region
Display the currently valid
configuration of the MST region
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
Use the command...
system-view
stp region-configuration
region-name name
instance instance-id vlan
vlan-list
vlan-mapping modulo
modulo
revision-level level
active
region-configuration
check
region-configuration
display stp
region-configuration
1-16
Remarks
—
—
Required
The default MST region name of a
switch is its MAC address.
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.
Required
The default revision level of an
MST region is level 0.
Required
Optional
Available in any view