1-44MSTP Configuration ExampleNetwork requirementsz All devices on the network are in the same MST region. Device A and Device B work on thedistribution layer, while Device C and Device D work on the access layer.z Configure MSTP so that packets of different VLANs are forwarded along different spanning trees:Packets of VLAN 10 are forwarded along MSTI 1, those of VLAN 30 are forwarded along MSTI 3,those of VLAN 40 are forwarded along MSTI 4, and those of VLAN 20 are forwarded along MSTI 0.z VLAN 10 and VLAN 30 are terminated on the distribution layer devices, and VLAN 40 is terminatedon the access layer devices, so the root bridges of MSTI 1 and MSTI 3 are Device A and Device Brespectively, while the root bridge of MSTI 4 is Device C.Figure 1-12 Network diagram for MSTP configurationGE1/0/1GE1/0/1GE1/0/1GE1/0/1Configuration procedure1) VLAN and VLAN member port configurationCreate VLAN 10, VLAN 20, and VLAN 30 on Device A and Device B respectively, create VLAN 10,VLAN 20, and VLAN 40 on Device C, and 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. The detailedconfiguration procedure is omitted.2) Configuration on Device A# Enter MST region view, configure the MST region name as example, map VLAN 10, VLAN 30, andVLAN 40 to MSTI 1, MSTI 3, and MSTI 4 respectively, and configure the revision level of the MST regionas 0. system-view[DeviceA] stp region-configuration[DeviceA-mst-region] region-name example[DeviceA-mst-region] instance 1 vlan 10[DeviceA-mst-region] instance 3 vlan 30[DeviceA-mst-region] instance 4 vlan 40[DeviceA-mst-region] revision-level 0
