Siemens SCALANCE XM-400 Configuration Manual page 306

Configuring with Web Based Management
5.5 The "Layer 2" menu
Table 2 contains the following columns:
● Port
Shows the available ports.
● Setting
Specify how the port handles loop detection frames. Select one of the following options
from the drop-down list:
Note
Test frames create additional network load. We recommend that you only configure
individual switches, for example at branch points of the ring, as "Sender" and the others as
"Forwarder".
– Sender
– Forwarder
– blocked
● Interval [ms]
Specifies the send interval for loop detection frames in milliseconds.
● Threshold
By entering a number, specify the number of received loop detection frames as of which a
loop is assumed.
● Timeout [s]
Specifies the number of seconds after which the device automatically changes to the status
in which it was before the loop. If the value "0" is set, you need to enable the port manually
again following a loop with the "Reset" button.
● Remote reaction
Specify how the port will react if a remote loop occurs. Select one of the two options from
the drop-down list:
– No Change: A loop has no effect on the port.
– disabled: The port is blocked.
● Local reaction
Specify how the port will react if a local loop occurs. Select one of the two options from the
drop-down list:
– No Change: A loop has no effect on the port.
– disabled: The port is blocked
● Status
This box shows whether loop detection is enabled or disabled for this port.
● Source Port
Shows the receiving port of the loop detection frame that triggered the last reaction.
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Loop detection frames are sent out and forwarded.
Loop detection frames from other devices are forwarded.
The forwarding of loop detection frames is blocked.
SCALANCE XM-400/XR-500 Web Based Management (WBM)
Configuration Manual, 05/2017, C79000-G8976-C248-12