H3C Technologies H3C S5560 Series Switches - Manual (Page 139)

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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 31 Network diagram
Configuration procedure
1. Configure VLANs and VLAN member ports. (Details not shown.)
{
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.
2. Configure Device A:
# Enter MST region view, and configure the MST region name as example.
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
# Specify the device as the root bridge of MSTI 1.
[DeviceA] stp instance 1 root primary
# Enable the spanning tree feature globally.
[DeviceA] stp global enable
3. Configure Device B:
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