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Modifying the LAG STP Parameters
1
Open the 
STP LAG Settings
 page.
2
Select a LAG from the 
Select a LAG
 drop-down menu.
3
Modify the fields as desired.
4
Click 
Apply Changes
. 
The STP LAG parameters are modified, and the device is updated.
Configuring Rapid Spanning Tree
While Classic Spanning Tree guarantees preventing L2 forwarding loops in a general network topology, 
convergence can take up to 30-60 seconds. The convergence time is considered too long for many 
applications. When network topology allows, faster convergence may be possible. The
 
Rapid Spanning 
Tree Protocol (RSTP) detects and uses of network topologies that provide faster convergence of the 
spanning tree, without creating forwarding loops. 
RSTP has the following port states:
•Disabled
•Learning
• Discarding
•Forwarding
Rapid Spanning Tree is enabled on the STP Global Settings page. To open the Rapid Spanning Tree 
(RSTP) page, click Switch→ Spanning Tree→ Rapid Spanning Tree in the tree view.