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Appendix D.
Example of configuration using loop detection function
By using the loop detection function, you can prevent a loop failure that is likely to be caused
in a downstream Switching Hub that the user directly uses.
In addition, if a downstream Switching Hub is connected with a device, such as a hub without
loop detection function, and a loop failure occurs under the device, the downstream Switching
Hub shuts down the corresponding port to prevent the failure from extending to the entire network.
Upstream Switching Hub
Downstream
Switching Hub 1
PC 1
Fig. 1 Example of configuration using loop detection function
Example of Network
Configuration using Loop
Detection Function and Its
Precautions
Hub not supporting
loop detection
function
269
Downstream
Switching Hub 2
PC 2
PC 3
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