Allied Telesis GS910 Series - Guidelines for Loop Prevention; Enabling Loop Protection; Disabling Loop Protection

GS910 Series Gigabit Ehternet Unmanaged Switch Installation and User’s Guide
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Guidelines for
Loop Prevention
Here are guidelines for using the Loop Prevention function:
 The switch must have a unique MAC address.
 In a topology with multiple switches with Loop Prevention enabled,
these switches select a root switch.
 The switch with a larger MAC address is selected as a root switch.
 Only a root switch blocks its port(s) when a loop is detected.
 A port receives Loop Prevention frames even when the port is
blocked.
Enabling Loop
Protection
To enable Loop Prevention, set the Loop Prevention DIP switch on the
front panel to “L/P ENABLE.”
Disabling Loop
Protection
To disable Loop Prevention, set the Loop Prevention DIP switch on the
front panel to “L/P DISABLE.”