Operation Manual – MSTPH3C S5500-EI Series Ethernet Switches Chapter 1 MSTP Configuration1-51Note:We recommend that you keep this feature enabled.1.9 Displaying and Maintaining MSTPTo do... Use the command... RemarksView the information aboutabnormally blocked ports display stp abnormal-port Available in anyviewView the information aboutports blocked by STPprotection actionsdisplay stp down-port Available in anyviewView the information of portrole calculation history for thespecified MSTP instance orall MSTP instancesdisplay stp [ instanceinstance-id ] historyAvailable in anyviewView the statistics of TC/TCNBPDUs sent and received byall ports in the specifiedMSTP instance or all MSTPinstancesdisplay stp [ instanceinstance-id ] tcAvailable in anyviewView the status informationand statistics information ofMSTPdisplay stp [ instanceinstance-id ] [ interfaceinterface-list ] [ brief ]Available in anyviewView the information aboutMST region configuration ineffectdisplay stpregion-configurationAvailable in anyviewView root bridge informationof all MSTP instances display stp root Available in anyviewClear the statisticsinformation of MSTPreset stp [ interfaceinterface-list ]Available in userview1.10 MSTP Configuration ExampleI. Network requirementsConfigure MSTP so that packets of different VLANs are forwarded along differentspanning trees. The specific configuration requirements are as follows:z All devices on the network are in the same MST region.z Packets of VLAN 10 are forwarded along MST region 1, those of VLAN 30 areforwarded along MST instance 3, those of VLAN 40 are forwarded along MSTinstance 4, and those of VLAN 20 are forwarded along MST instance 0.
