Service Bridge – Setup and Configuration 
Entry ID: 109747975,    V1.4,    05/2019 
 
 Siemens AG 2019 All rights reserved 
6.2  Networks with a Y switch (XF204-2BA DNA) 
When the Service Bridge is used in a R1 network with a Y switch, the following 
devices are available depending on the access point (see  
Figure 6-2): 
(1)  Access in the R1 network subnet 1 
Devices in this subnet and behind the Y switch are accessible. 
(2)  Access in the R1 network subnet 2 
Devices in this subnet and behind the Y switch are accessible. 
(3)  Access behind the Y switch 
Devices behind the Y switch and in both subnets of the R1 network are 
accessible. 
 
Figure 6-2