Siemens SCALANCE XM-400 Configuration Manual page 276

Configuring with Web Based Management
5.5 The "Layer 2" menu
The page contains the following boxes:
● Mirroring
Click this check box to enable or disable mirroring.
● Monitor Barrier
Click this check box to enable or disable Monitor Barrier
Note
Effects of monitor barrier
If you enable this option, management of the switch via the monitor port is no longer
reachable. The following port-specific functions are changed:
● The DCP forwarding is turned off.
● LLDP is turned off.
● Unicast, multicast and broadcast blocking is turned on.
The previous statuses of these functions are no longer restored after disabling monitor
barrier again. They are reset to the default values and may need to be reconfigured.
You can reconfigure these functions manually even if monitor barrier is turned on. The data
traffic on the monitor port is also allowed again. If you do not require this, make sure that
only the data traffic you want to monitor is forwarded to the interface.
If mirroring is disabled, the listed port-specific functions are reset to the default values. This
reset takes place regardless of whether the functions were configured manually or
automatically by enabling "monitor barrier".
Note
Function Extender BUS ANALYZER Agent XM-400
If the destination port is a port of the function extender BUS ANALYZER Agent XM-400 the
monitor barrier option is always activated. It is activated regardless of whether the check
box was disabled or enabled.
● RSPAN VLAN-ID
Select a VLAN on which the data traffic of a mirroring session is transferred without
disruption.
The table for the basic settings contains the following boxes:
● Select
● Session ID
The Session ID is assigned automatically when a new entry is created.
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Select the row you want to delete.
SCALANCE XM-400/XR-500 Web Based Management (WBM)
Configuration Manual, 05/2017, C79000-G8976-C248-12