- 
        To display a count of the packets dropped due to
          congestion on a port, use the command:
        
show ports
              port_list
            congestion {no-refresh} 
       - 
        To display a count of the packets dropped due to
          congestion in the QoS profiles for a port, use the
          command:
        
show ports
              port_list
            qosmonitor {congestion} {no-refresh} 
       - 
        To display traffic counts for each profile on the specified stacking ports, use the
          command:
        
show ports stack-ports
                stack_port_list
                qosmonitor {no-refresh | refresh} {port-number}
       - 
        To display packet counts or dropped-traffic counts for each profile on the specified
          stacking ports, use the command:
        
show ports stack-ports
                stack_port_list
                qosmonitor
                congestion {no-refresh | refresh} {port-number}
       - 
        To display the stacking port congestion statistics (dropped packets) for the specified
          ports on the front panel, use the command:
        
show ports stack-ports
                stack_port_list
                congestion {no-refresh | refresh} port-number