Quick Reference Guide
GS108T and GS110TP Smart Switch Software Administration Manual
Configuring Switching Information 3-25
v1.0, April 2010
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CST Configuration
Use the Spanning Tree CST Configuration page to configure Common Spanning Tree (CST) and
Internal Spanning Tree on the switch.
To display the Spanning Tree CST Configuration page, click SwitchingSTPAdvanced
CST Configuration.
To configure CST settings:
1. Specify values for CST in the appropriate fields:
• Bridge Priority. When switches or bridges are running STP, each is assigned a priority.
After exchanging BPDUs, the switch with the lowest priority value becomes the root
bridge. Specifies the bridge priority value for the Common and Internal Spanning Tree
(CST). The valid range is 0–61440. The bridge priority is a multiple of 4096. If you
specify a priority that is not a multiple of 4096, the priority is automatically set to the next
lowest priority that is a multiple of 4096. For example, if the priority is attempted to be set
to any value between 0 and 4095, it will be set to 0. The default priority is 32768.
Figure 3-17