Netgear GS752TXS - Stackable Smart Gigabit Ethernet Switch 관리자 가이드

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

STP Statistics

Use the Spanning Tree Statistics screen 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 screen, select Switching 

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

forwards traffic while learning MAC addresses.

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. The port is currently blocked and cannot be used to 

forward traffic or learn MAC addresses.

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. The port is currently in the listening mode. The port 

cannot forward traffic nor can it learn MAC addresses.

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. The port is currently in the learning mode. The port 

cannot  forward traffic, however, it can learn new MAC 
addresses.

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 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 Port.

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.