Siemens SCALANCE XM-400 Configuration Manual page 258
Industrial ethernet switches
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- Configuration manual (960 pages) ,
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Configuring with Web Based Management
5.5 The "Layer 2" menu
● Transparent
If you enable this check box, you switch a VLAN to the transparent mode. Ports that were
assigned to this VLAN as members or untagged members now become transparent ports.
This means the following:
– The port VLAN ID of the transparent port is set to the ID of this VLAN.
– Untagged frames that are received at these ports are forwarded to all other transparent
– Frames tagged with VLAN ID "0" and that are received at these ports are forwarded to
– Frames tagged with the VLAN ID of the transparent VLAN and that are received at these
– Other frames are forwarded according to the normal VLAN rules and a transparent port
– All ports that were not members or untagged members in the relevant VLAN are
– As long as a VLAN is configured as a transparent VLAN, the ports belonging to this
– You can only configure one a transparent VLAN.
Note
If you disable the transparent mode for a VLAN again, the previously written port
configuration is retained.
● List of ports
Specify the use of the port. The following options are available:
– "-"
– M
– R
– U (uppercase)
– u (lowercase)
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ports once again without tag as long as they are not forwarded to a standard VLAN by
a protocol or subnet rule.
all other transparent ports once again tagged with VLAN ID "0" as long as they are not
forwarded to a standard VLAN by a protocol or subnet rule.
ports are forwarded to all transparent ports once again tagged with the VLAN ID of the
transparent VLAN.
behaves like an untagged member in this VLAN.
automatically set to the "Forbidden" status.
VLAN cannot be modified.
The port is not a member of the specified VLAN.
With a new definition, all ports have the identifier "-".
The port is a member of the VLAN. Frames sent in this VLAN are forwarded with the
corresponding VLAN tag.
The port is a member of the VLAN. A GVRP frame is used for the registration.
The port is an untagged member of the VLAN. Frames sent in this VLAN are forwarded
without the VLAN tag. Frames without a VLAN tag are sent from this port.
The port is an untagged member of the VLAN, but the VLAN is not configured as a port
VLAN. Frames sent in this VLAN are forwarded without the VLAN tag.
SCALANCE XM-400/XR-500 Web Based Management (WBM)
Configuration Manual, 05/2017, C79000-G8976-C248-12
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