NI 8523 module: No of physical ports required to run 3 different protocol's custom devices

[RishiDivakar]

Hi All,

We have a requirement to run 3 Automotive ethernet based custom devices in our Windows PXI(Later shall be converted to Linux RT). 

SOMEIP, AVB, DoIP protocols shall be run as custom devices in PXI. We are using 8523 module as Ethernet card. It has 4 ports. 

Doubt: While configuring custom device in sysdef file, each physical port shall be selected. It means 3 physical cables. However, there is only one physical cable going to the ECU ie, 1 port.

Is it possible to have one physical cable from port 1 of 8523 to ECU and all above custom device's generated packets transferred through the single medium?

I have checked 8523 module's manual and could see that there is a TAP option, but it's possible to tap port1 with Port2 and Port3 with Port 4, not possible to tap all 3 ports.