GS108T and GS110TP Smart Switch Software Administration Manual
Configuring Switching Information 3-29
v1.0, April 2010
CST Port Status
Use the Spanning Tree CST Port Status page to display Common Spanning Tree (CST) and
Internal Spanning Tree on a specific port on the switch.
To display the Spanning Tree CST Port Status page, click SwitchingSTPAdvanced CST
Port Status.
The following table describes the CST Status information displayed on the screen.
Figure 3-19
Table 3-3. Spanning Tree CST Port Status Fields
Field Description
Interface Select a physical or port channel interface to configure. The port is
associated with the VLAN(s) associated with the CST.
Port Role Each MST Bridge Port that is enabled is assigned a Port Role for each
spanning tree. The port role will be one of the following values: Root Port,
Designated Port, Alternate Port, Backup Port, Master Port, or Disabled
Port.
Designated Root Root Bridge for the CST. It is made up using the bridge priority and the base
MAC address of the bridge.
Designated Cost Displays cost of the port participating in the STP topology. Ports with a lower
cost are less likely to be blocked if STP detects loops.
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