# Spanning Tree Objects

Device > Configure > Spanning Tree > Spanning Tree Objects

This dialog box displays spanning tree information for this device.

To view the definition for a particular MIB variable, click the appropriate link from the following list:

- Spanning Tree Type (stpxSpanningTreeType)

- Path Cost (stpxSpanningTreePathCostMode)

The following list specifies buttons in this dialog box, as well as their function:

- Click OK to continue.

- Click Apply to save the changes in the dialog box.

- Click Cancel to close the dialog box.

- Click Refresh to update the contents of the dialog box.

- Click Print to print the contents of the dialog box.

- Click Help to access online help.

Spanning Tree Type (stpxSpanningTreeType)

Actual mode the spanning tree protocol runs in on this device. There are four modes:

- PVST+ (pvstPlus)

- MISTP (mistp)

- MISTP–PVST+ (mistpPvstPlus)

- MST (mst)

Path Cost (stpxSpanningTreePathCostMode)

Indicates the spanning tree path cost mode configured on this device. This mode applies to all instances of the spanning tree protocol running on the device. When the value of this field is changed, the path cost of all ports is reassigned to the default path cost value, which is based on the new spanning tree path cost mode and the speed of the ports.

If the selected STP mode for the device is "pvst+", the value of this field can be changed between "long" and "short". If the selected STP mode for the device is "mistp", "mistp-pvst+", or "mst", the default switch uses the long path cost.

Note: When the value of this field is set to "long", the path cost you can specify ranges from 1 to 268,435,456. When the value of this field is set to "short", the path cost you can specify ranges from 1 to 65,545.