Operation Manual – MSTPH3C S7500 Series Ethernet Switches Chapter 1 MSTP Configuration1-411.9 Displaying and Debugging MSTPTo do ... Use the command ...Display spanning tree-relatedinformation about the current switchdisplay stp [ instance instance-id ][ interface interface-list | slot slot-number ][ brief ]Display the region configurationinformation display stp region-configurationClear MSTP-related statistics reset stp [ interface interface-list ]1.10 MSTP Configuration ExampleI. Network requirementsImplement MSTP in the network shown in Figure 1-7 to enable packets of differentVLANs to be forwarded along different MSTIs. The detailed configurations are asfollows: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 MSTI1, MSTI 3, MSTI 4, and MSTI 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 MSTI 1 and MSTI 3 respectively. Switch C isconfigured as the root bridge of MSTI 4.II. Network diagramSwitch ASwitch CPermit:all VLANPermit:VLAN 20,40Permit:VLAN 10,20Permit:VLAN 10,20Permit:VLAN 20,30Switch BSwitch DPermit:VLAN 20,30Figure 1-7 Network diagram for implementing MSTP