D-Link DES-5024 manual Spanning Tree Configuration, STA Operation Levels

Fast Ethernet Switching System User’s Guide

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

Managing the DES-5024 59