This chapter provides detailed information for the Spanning Tree port set of commands for the S- K- and 7100-Series platforms. Spanning tree port functionality includes the displaying and setting of Spanning Tree port parameters, including enabling or disabling the Spanning Tree algorithm on one or more ports, displaying designated bridge, port and root information, displaying blocked ports, displaying and setting Spanning Tree port priorities and costs, configuring edge port parameters, and setting point-to-point protocol mode. For information about configuring Spanning Tree, refer to Spanning Tree Configuration in the S-, K-, and 7100 Series Configuration Guide.