Technical basics
3.4 VLAN
SCALANCE SC-600 Web Based Management (WBM)
40
Configuration Manual, 10/2021, C79000-G8976-C475-03
3.4
VLAN
Network definition regardless of the spatial location of the nodes
VLAN (Virtual Local Area Network) divides a physical network into several logical
networks that are shielded from each other. Here, devices are grouped together to form
logical groups. Only nodes of the same VLAN can address each other. Since multicast
and broadcast frames are only forwarded within the particular VLAN, they are also
known as broadcast domains.
The particular advantage of VLANs is the reduced network load for the nodes and
network segments of other VLANs.
To identify which packet belongs to which VLAN, the frame is expanded by 4 bytes, refer
to VLAN tagging (Page 41). This expansion includes not only the VLAN ID but also
priority information.
Options for the VLAN assignment
There are various options for the assignment to VLANs:
•
Port-based VLAN
Each port of a device is assigned a VLAN ID. You configure port-based VLAN in
"Layer 2 > VLAN > Port-based VLAN (Page 234)".
VLAN assignment on the device
In the factory settings, the following assignments are made:
SCALANCE SC6x2-2C
P0.1
VLAN1
For access from the local network (LAN) to the
device
P0.2
VLAN2
For access from the external network (WAN) to
the device
SCALANCE SC6x6-2C
P0.1 - P0.4
VLAN1
For access from the local network (LAN) to the
device
P0.5 - P0.6
VLAN2
For access from the external network (WAN) to
the device
You can change the assignment in "Layer 2 > VLAN > General".
The VLANs are in different IP subnets. To allow these to communicate with each other,
the route and firewall rule must be configured on the device.
Summary of Contents for SIMATIC NET SCALANCE SC-600
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