Huawei Quidway S3100 Series Operation Manual page 198

Operation Manual – MSTP
Quidway S3100 Series Ethernet Switches
In this network, Switch A and Switch B operate on the distribution layer; Switch C and
Switch D operate on the access layer. VLAN 10 and VLAN 30 are limited in the
distribution layer and VLAN 40 is limited in the access layer. Switch A and Switch B are
configured as the root bridges of spanning tree instance 1 and spanning tree instance 3
respectively. Switch C is configured as the root bridge of spanning tree instance 4.
II. Network diagram
Switch A Switch A
Switch C Switch C
Figure 1-6 Network diagram for implementing MSTP
Note:
The "Permit:" shown in Figure 1-6 means the corresponding link permits packets of
specific VLANs.
III. Configuration procedure
Configure Switch A.
# Enter MST region view.
<Quidway> system-view
System View: return to User View with Ctrl+Z.
[Quidway] stp region-configuration
# Configure the MST region.
[Quidway-mst-region] region-name example
[Quidway-mst-region] instance 1 vlan 10
[Quidway-mst-region] instance 3 vlan 30
[Quidway-mst-region] instance 4 vlan 40
[Quidway-mst-region] revision-level 0
# Activate the settings of the MST region.
[Quidway-mst-region] active region-configuration
Permit :all VLAN Permit :all VLAN
Permit : Permit :
VLAN 10, 20 VLAN 10, 20
Permit : Permit :
VLAN 10, 20 VLAN 10, 20
Permit :VLAN 20, 40 Permit :VLAN 20, 40
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Switch B Switch B
Permit : Permit :
VLAN 20, 30 VLAN 20, 30
Permit : Permit :
VLAN 20, 30 VLAN 20, 30
Switch D Switch D
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Chapter 1 MSTP Configuration