H3C S6850 Series Configuration Manual page 327

VLAN 10 and VLAN 30 are terminated on the distribution layer devices, and VLAN 40 is terminated
on the access layer devices. The root bridges of MSTI 1 and MSTI 3 are Device A and Device B,
respectively, and the root bridge of MSTI 4 is Device C.
Figure 22 Network diagram
MST region
Permit: VLANs 10
and 20
Device C
Procedure
Configure VLANs and VLAN member ports. (Details not shown.)
1.
Create VLAN 10, VLAN 20, and VLAN 30 on both Device A and Device B.
Create VLAN 10, VLAN 20, and VLAN 40 on Device C.
Create VLAN 20, VLAN 30, and VLAN 40 on Device D.
Configure the ports on these devices as trunk ports and assign them to related VLANs.
Configure Device A:
2.
# Enter MST region view, and configure the MST region name as example.
<DeviceA> system-view
[DeviceA] stp region-configuration
[DeviceA-mst-region] region-name example
# Map VLAN 10, VLAN 30, and VLAN 40 to MSTI 1, MSTI 3, and MSTI 4, respectively.
[DeviceA-mst-region] instance 1 vlan 10
[DeviceA-mst-region] instance 3 vlan 30
[DeviceA-mst-region] instance 4 vlan 40
# Configure the revision level of the MST region as 0.
[DeviceA-mst-region] revision-level 0
# Activate MST region configuration.
[DeviceA-mst-region] active region-configuration
[DeviceA-mst-region] quit
# Configure the Device A as the root bridge of MSTI 1.
[DeviceA] stp instance 1 root primary
# Enable the spanning tree feature globally.
[DeviceA] stp global enable
Configure Device B:
3.
# Enter MST region view, and configure the MST region name as example.
<DeviceB> system-view
Device A
Permit: all VLANs
WGE1/0/3
WGE1/0/3
Permit: VLANs 20 and 40
Device B
WGE1/0/3
Permit: VLANs 20
WGE1/0/3
58
and 30
Device D