XS712T Smart Switch
CST Port Status
Use the CST Port Status screen to display Common Spanning Tree (CST) and Internal Spanning Tree on a specific port on the switch.
To display the CST port status for a specific port:
1. Select Switching > STP > Advanced > CST Port Status.
The following table describes the CST Status information displayed on the screen.
Field | Description |
Interface | Displays the port 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. |
|
|
Designated Bridge | Bridge Identifier of the bridge with the Designated Port. It is made |
| up using the bridge priority and the base MAC address of the |
| bridge. |
|
|
Designated Port | Port Identifier on the Designated Bridge that offers the lowest cost |
| to the LAN. It is made up from the port priority and the interface |
| number of the port. |
|
|
