User Documentation
User Manual Managed Switches 
79 
At the top of this page, the user can check the Current Status of this function. For RSTP, you will 
see: 
Root/Not Root 
This field only appears when RSTP mode is selected. The field indicates whether or not this switch is 
the Root of the Spanning Tree (the root is determined automatically). 
At the bottom of this page, the user can configure the “Settings” of this function. For RSTP, you can 
configure: 
Explanation of ‘Settings’ items for selected redundancy protocol RSTP 
Bridge priority 
Setting 
Description 
Factory Default 
Numerical value 
selected by user 
Increase this device’s bridge priority by selecting a lower 
number. A device with a higher bridge priority has a 
greater chance of being established as the root of the 
Spanning Tree topology. 
32768 
Forwarding Delay (sec) 
Setting 
Description 
Factory Default 
Numerical value 
input by user 
The amount of time this device waits before checking to 
see if it should change to a different state. 
15 
Hello time (sec) 
Setting 
Description 
Factory Default 
Numerical value 
input by user 
The root of the Spanning Tree topology periodically 
sends out a “hello” message to other devices on the 
network to check if the topology is healthy. The “hello 
time” is the amount of time the root waits between 
sending hello messages. 
2 
Max. Age (sec) 
Setting 
Description 
Factory Default 
Numerical value 
input by user 
If this device is not the root, and it has not received a hello 
message from the root in an amount of time equal to 
“Max. Age,” then this device will reconfigure itself as a 
root. Once two or more devices on the network are 
recognized as a root, the devices will renegotiate to set 
up a new Spanning Tree topology. 
20 
Enable RSTP per Port 
Setting 
Description 
Factory Default 
Enable/Disable 
Select to enable the port as a node on the Spanning Tree 
topology. 
Disabled 










