Netgear GS716Tv2 - ProSAFE 16-Port Gigabit Managed Switch 管理者ガイド

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 Switching 

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CST Port Status.

 

The following table describes the CST Status information displayed on the screen.

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.

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.

Topology Change 
Acknowledge

Identifies whether the next BPDU to be transmitted for this port would have 
the topology change acknowledgement flag set. It is either True or False.

Edge Port

Indicates whether the port is enabled as an edge port. Possible values are 
Enabled or Disabled.

Point-to-point MAC

Derived value indicating whether the port is part of a point-to-point link.