Display the Hello Time value of Root bridge setting. 
Display the value of maximum aging time of root bridge setting. 
Display the value of forwarding delay of root bridge setting. 
8.3.2 Port setting 
The port priority and path cost can be set herein, and the information on the roles and status 
of switch ports can be inquired. 
Click the Device Management > STP > Port configuration to access the page. 
 
Specification of parameter setting: 
Select the port to be set. 
Set the port priority, effective values are integral multiples of 16, and the 
lower the value, the higher the priority. 
Port priority is  an important reference to determine whether the  ports 
connected  to  port  will  be  selected  to  work  as  root  ports.  Ports  on 
downstream  device  connected  to  a  port  with  a  higher  priority  will  be 
selected to work as root port under equivalent conditions 
Set the path cost of port.