Operation Manual – MSTPH3C S3100 Series Ethernet Switches Chapter 1 MSTP Configuration1-57Operation CommandDisplay information about the ports thatare shut down by STP protection display stp portdownDisplay information about the ports thatare blocked by STP protection display stp abnormalportDisplay information about the root port ofthe instance where the switch reside display stp rootClear statistics about MSTP reset stp [ interface interface-list ]1.13 MSTP Configuration ExampleI. Network requirementsImplement MSTP in the network shown in Figure 1-10 to enable packets of differentVLANs to be forwarded along different spanning tree instances. The detailedconfigurations 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 alongspanning tree instance 1, instance 3, instance 4, and instance 0 respectively.In this network, Switch A and Switch B operate on the convergence layer; Switch C andSwitch D operate on the access layer. VLAN 10 and VLAN 30 are limited in theconvergence layer and VLAN 40 is limited in the access layer. Switch A and Switch Bare configured as the root bridges of spanning tree instance 1 and spanning treeinstance 3 respectively. Switch C is configured as the root bridge of spanning treeinstance 4.II. Network diagramFigure 1-10 Network diagram for MSTP configuration
