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Fast Ethernet Switching System User’s Guide
Managing the DES-5024
59
Spanning Tree Configuration
The Spanning Tree Configuration panel is used to configure the Spanning Tree
Algorithm. The Spanning Tree Algorithm (STA) in the DES-5024 allows you to create
alternative paths (using multiple switches or bridges) in your network. These backup
paths are idle until the DES-5024 determines that a problem has developed in the primary
path. If the primary path breaks down STA will activate the backup path. STA is very
complicated and you should understand it well before changing the default settings. See
Table 7: User Selective STA Parameters.
STA Operation Levels
STA operates on the bridge level and the port level. On the bridge level, STA calculates
the Bridge Identifier for each DES-5024, then sets the Root Bridge and the Designated
Bridges. On the port level, STA sets the Root Port and Designated Ports.
Spanning Tree Configuration Menu
The Spanning Tree Configuration menu, displayed in Figure 34, allows you to enable or
disable STA, set bridge priority and other configurations.
Figure 34: Spanning Tree Configuration