While we will not be going into detail on Spanning Tree troubleshooting in this guide, because that has been moved to the new TSHOOT certification exam, there are some commands with which you should be familiar in order to support and troubleshoot the STP network. These commands will be described and illustrated in this section. The following output shows the different options available with the show spanning-tree command:
VTP-Switch-1#show spanning-tree ?
active Report on active interfaces only
backbonefast Show spanning tree backbonefast status
blockedports Show blocked ports
bridge Status and configuration of . . .
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