24-Port Managed Gigabit Switch 
The delay used by STP Bridges to transition Root and 
Designated Ports to Forwarding (used in STP compatible 
mode). Valid values are in the range 4 to 30 seconds.   
Protocol Version   
The STP compatible and normal mode setting. Compatible 
means the Switch works in compatible mode; Normal means 
the Switch works in RSTP mode. 
 
Note
:
 
1. Hell
o time can’t be configured, 2s by default. 
2. The Hello Time cannot be longer than the Max. Age. Otherwise 
a configuration error will occur. Observe the following formulas 
when setting the above parameters:   
Max. Age ≤ 2 x (Forward Delay - 1 second)   
Max. Age ≥ 2 x (Hello Time + 1 second) 
 
 
 
 
3.6.4  RSTP Port Configuration 
 
Please select the left meun as TEG3224T→Configuration→ 
Spanning Tree→ Port to enter the following window: 
 
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