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5.4. Network Configuration Example and Notes
Using Loop Detection and Blocking Function
Configuration example using the Loop detection and blocking function
Using the Loop detection and blocking function allows to prevent a loop failure
possibly occurring on a downstream switch that the user directly uses.
If you connect a hub that does not support the Loop detection and blocking func-
tion to a downstream switch, and a loop failure occurs in the switch, the down-
stream switch port that caused a loop is blocked to prevent a loop failure from
affecting the entire network.
Upstream switch
Downstream
switch 1
PC 1
Figure 5-1 Configuration example using the Loop detection and blocking function
Hub not support-
ing Loop detec-
tion and blocking
function
PC 2
191
Downstream
switch 2
PC 3
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