Siemens SCALANCE X-200 Configuration Manual page 115

Monitor Barrier Enabled
With this check box, you can restrict communication via the mirror port. If the check box is
selected, the mirror port is taken out of normal frame switching. Otherwise communication
via the mirror port is unrestricted.
Passive Listening Enabled
With this check box, you enable/disable the "Passive Listening" function. If "Passive
listening" is enabled, the IE switch deletes its MAC address table when it receives an STP
topology change frame. The IE switch also forwards STP BPDUs. If "Passive Listening" is
disabled, all received STP frames are discarded.
Note
When an STP Topology Change frame is received, the MAC address table on the X-200 is
deleted within 1 second.
With IRT devices, the time needed for the delete action depends on the number of entries.
See also section "Spanning tree, media redundancy and passive listening (Page 27)".
Oversize Mode
Only relevant for devices without the IRT function.
If you select this check box, frames with a size up to 1,632 bytes instead of 1,532 bytes are
permitted.
Aging
Clicking the check box here disables the aging function. The aging time can be set in
seconds.
Note
If the aging function is disabled, communication problems will occur when connected nodes
are plugged into different ports. In normal mode, the aging function should therefore remain
enabled.
Note
Note the following for all X-200IRT IE switches:
With the "Port Mirroring" function and cyclic PROFINET data traffic, the mirror port (monitor
port) only shows the frames received at the monitored port (mirrored port). Non-cyclic frames
mean that PROFINET communication is not involved and, in this case therefore, both sent
and received packets are shown at the mirror port (monitor port).
SCALANCE X-200
Configuration Manual, 03/2015, C79000-G8976-C285-06
Menus in the WBM
5.4 The Switch menu
115