H3C S6850 Series Configuration Manual page 212

Figure 2 Network diagram
Permit: all VLANs
A
C
MSTI 0
Procedure
1. Configure Device A:
# Enter MST region view.
<DeviceA> system-view
[DeviceA] stp region-configuration
# Configure the MST region name, VLAN-to-instance mappings, and revision level.
[DeviceA-mst-region] region-name example
[DeviceA-mst-region] instance 1 vlan 10
[DeviceA-mst-region] instance 2 vlan 20
[DeviceA-mst-region] revision-level 0
# Manually activate the MST region configuration.
[DeviceA-mst-region] active region-configuration
[DeviceA-mst-region] quit
# Configure Device A as the primary root bridge of MSTI 1.
[DeviceA] stp instance 1 root primary
# Globally enable the spanning tree feature.
[DeviceA] stp global enable
# Globally enable MVRP.
[DeviceA] mvrp global enable
Device A
VLAN 10
Device C
B
D
Root bridge
Blocked port
Device B
Permit: all VLANs
WGE1/0/3 WGE1/0/3
VLAN 10 MSTI 1
VLAN 20 MSTI 2
Other VLANs MSTI 0
A
B
C
MSTI 1
Link not blocked by
spanning tree
Root port
Topology of each MSTI
8
VLAN 20
Permit: VLANs 20, 40
Device D
B
A
C D
MSTI 2
Link blocked by
spanning tree
Designated port