Netgear M4100-12G-POE+ (GSM7212P) - 12-Port Managed Gigabit Switch Manuel D’Utilisation

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Configure Switching Information 
154
M4100 Series Managed Switch 
This setting configures the BPDU flood, which floods the BPDU traffic arriving on this port 
when STP is disabled on this port.
15. 
In the Auto Edge field select Disable or Enable.
This configures the auto edge mode of a port, which allows the port to become an edge 
port if it does not see BPDUs for some duration.
16. 
In the Root Guard field, select Disable or Enable.
This configures the root guard mode, which sets a port to discard any superior 
information received by the port and thus protects the root of the device against changing. 
The port gets put into the discarding state and does not forward any packets.
17. 
Use Loop Guard to configure the loop guard on the port to protect Layer 2 forwarding loops. 
If loop guard is enabled, the port moves into the STP loop inconsistent blocking state instead 
of the listening/learning/forwarding state.
18. 
Use TCN Guard to configure the TCN guard for a port restricting the port from propagating 
any topology change information received through that port. 
The possible values are Enable or Disable.
19. 
Use Port Mode to enable or disable Spanning Tree Protocol administrative mode associated 
with the port or port channel. 
The possible values are Enable or Disable.
The following table describes the nonconfigurable information displayed on the screen.
Table 45.  CST Port Configuration
Field
Description
Auto Calculated Port Path Cost
Displays whether the path cost is automatically calculated (Enabled) or 
not (Disabled). Path cost is calculated based on the link speed of the 
port if the configured value for port path cost is zero.
Hello Timer
Displays the value of the parameter for the CST.
Auto Calculated External Port Path 
Cost
Displays whether the external path cost is automatically calculated 
(Enabled) or not (Disabled). External Path cost is calculated based on 
the link speed of the port if the configured value for external port path 
cost is zero.
BPDU Guard Effect
The BPDU guard effect disables the edge ports that receive BPDU 
packets. The possible values are Enable or Disable.
Port Forwarding State
The forwarding state of this port.
View Spanning Tree CST Port Status
To view the Spanning Tree CST port status: 
1. 
Prepare your computer with a static IP address in the 169.254.100.0 subnet, for 
example, 169.254.100.201.