Buffalo BSL-PS-G2108M User Manual page 46

Chapter 2 Configuration
Parameter
Action when loops detected
Disable for:
MAC Thrashing
LDF
Receive Rate
Received Data Threshold
• If the time that was set in "Disable duration" has elapsed, the port is automatically enabled.
• The loop detection function temporarily disables a port when a loop is detected. It does not
prevent loops. The spanning tree function is used to block the port where the loop was detected; it
automatically switches the communication route to prevent a network failure. The Buffalo switch
includes both functions. Use the function you need based on your environment.
Meaning
This sets operation when a loop is detected.
Ignore :
No operation is performed for the port where a loop was detected.
However, the DIAG LED and LED for the port where the loop was
detected both blink, and the buzzer sounds for about 60 seconds. If
the loop is detected after 60 seconds, the 60-second buzzer sounds
again, and the operation is repeated.
Disable the port:
When a loop is detected in a port, the port is disabled only for
the number of seconds that was set in "Disable duration". At the
same time, the DIAG LED and LED for the port where the loop was
detected both blink, and the buzzer sounds for the number of
seconds set in "Disable for:".
If "Disable the port " was set for operation when a loop is detected,
this sets the time (seconds) that the port is disabled.
Range: 0 to 65535 seconds
This enables the MAC thrashing system of the loop detection
function.
A loop is recognized if the number of learned MAC addresses of this
switch exceeds the preset threshold value in 1 second.
This enables the LDF system of the loop detection function.
This sends LDF packets at 1-second intervals. A loop is recognized if
the sent LDF packet is received.
This enables the reception rate system of the loop detection
function.
A loop is recognized if the preset reception rate is exceeded.
This sets the reception rate threshold value (1 to 1000 Mbps) for
recognizing a loop.
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