Displays all blocked ports in Spanning Tree.
| stpd_name | Specifies an STPD name on the switch. | 
| port_list | Specifies one or more ports or slots and ports. | 
| blocked-ports | Displays only blocked ports. | 
N/A
None.
The following example displays the blocked Spanning Tree ports:
show stpd r1 blocked-ports
Port     VLAN
------------------------------------------------------------------------------
1:1      v123456789012345678901234567890, v1234567890123456789012345678901,
         v1234567890123456789012345678901
        
Number of Blocked Ports : 3      
      
    This command was first available in ExtremeXOS 15.7.1.
This command is available on ExtremeSwitching 5320, 5420, 5520, and 5720 series switches.