1-47MSTP Configuration ExampleNetwork requirementsImplement MSTP in the network shown in Figure 1-10 to enable packets of different VLANs to beforwarded along different MSTIs. The detailed configurations are as follows:z All switches in the network belong to the same MST region.z Packets of VLAN 10, VLAN 30, VLAN 40, and VLAN 20 are forwarded along MSTI 1, MSTI 3, MSTI4, and MSTI 0 respectively.In this network, Switch A and Switch B operate on the convergence layer; Switch C and Switch Doperate on the access layer. VLAN 10 and VLAN 30 are limited in the convergence layer and VLAN 40is limited in the access layer. Switch A and Switch B are configured as the root bridges of MSTI 1 andMSTI 3 respectively. Switch C is configured as the root bridge of MSTI 4.Network diagramFigure 1-10 Network diagram for MSTP configurationThe word “permit” shown in Figure 1-10 means the corresponding link permits packets of specificVLANs.Configuration procedure1) Configure Switch A# Enter MST region view. system-view[Sysname] stp region-configuration# Configure the region name, VLAN-to-MSTI mapping table, and revision level for the MST region.[Sysname-mst-region] region-name example[Sysname-mst-region] instance 1 vlan 10[Sysname-mst-region] instance 3 vlan 30[Sysname-mst-region] instance 4 vlan 40[Sysname-mst-region] revision-level 0# Activate the settings of the MST region manually.[Sysname-mst-region] active region-configuration
