Troubleshooting an RPVST+ configuration


This section describes the show spanning tree commands you can use to monitor, troubleshoot, and debug the operation of a per-VLAN spanning tree configuration in your network.


The show spanning-treecommands described in this section allow you to troubleshoot RPVST+ activity in your network by focusing on increasingly specific levels of operation. For example, you can display debug information for:

  • All VLANs

  • All ports of one VLAN

  • A specific port or several ports used in one VLAN