Service Bridge – Setup and Configuration 
Entry ID: 109747975,    V1.4,    05/2019 
 
 Siemens AG 2019 All rights reserved 
4.1.4  Private VLAN 
Layer 2 > Private VLAN 
Figure 4-5 
 
All the Private VLAN types are configured in the "Layer 2 > Private VLAN" menu. 
For an explanation of the Private VLAN types, see Section 4.1.1. The following 
settings are provided for the Service Bridge: 
(1)  Private VLAN Type: 
–  For the VLAN ID 1 (Port 1 – Plant bus): Primary PVLAN 
–  For the remaining VLAN IDs (Port 2..n – PNSeg): Isolated Secondary 
PVLAN 
(2)  Primary VLAN ID: 1, because all Secondary PVLANs are assigned to the 
Primary PVLAN (Plant bus). 
With this configuration, communication is possible between VLAN ID 1 (Port 1) and 
all PROFINET networks (VLAN ID 2 .n - Port 2..n). At the same time, the 
PROFINET networks are located in various Isolated Secondary PVLANs and thus 
remain logically separated from each other.