Netgear FS728TPv2 - ProSAFE 24 Port 10/100 Smart Switch with 4 Gigabit Ports and 24 PoE Ports 管理者ガイド

Click Refresh to update the screen with the latest MST information.

STP Statistics

Use the Spanning Tree Statistics page to view information about the number and type of 
bridge protocol data units (BPDUs) transmitted and received on each port.

To display the Spanning Tree Statistics page, click Switching 

 STP  Advanced  STP 

.

Port Forwarding State

Indicates the current STP state of a port. If enabled, the port state 
determines what forwarding action is taken on traffic. Possible port states 
are:

: STP is currently disabled on the port. The port forwards traffic 

while learning MAC addresses.

: The port is currently blocked and cannot be used to forward 

traffic or learn MAC addresses.

: The port is currently in the listening mode. The port cannot 

forward traffic nor can it learn MAC addresses.

: The port is currently in the learning mode. The port cannot 

forward traffic, however, it can learn new MAC addresses.

 The port is currently in the forwarding mode. The port can 

forward traffic and learn new MAC addresses

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 

.

Designated Root

Root Bridge for the selected MST instance. 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.