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10/100 Auto Negotiation Switch User's Guide
2. Enter a new value between zero and 255.
3. Select Save and press Enter.
Spanning Tree Configuration
The Spanning Tree Configuration panel is used to configure the Spanning Tree Algorithm.
The Spanning Tree Algorithm (STA) in the DES-3224 allows you to create alternative paths
(using multiple switches or bridges) in your network. These backup paths are idle until the
DES-3224 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.
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-3224 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 24, allows you to enable or
disable STA, set bridge priority and other configurations.
Figure 24: Spanning Tree Configuration menu
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Managing the DES-3224
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