UDP transfer between two TYSOM ZU7EV boards

Support
1

hello all,

I am unable to do UDP data transfer between two TYSOM ZU7EV boards. Can anyone help what is wrong with PYNQ v3.0.1 image in this regard.

When I connected two boards directly they did not auto negotiate and Network LEDs were not glowing. Then I connected through an L2 switch. Then auto negotiation happened and the network LEDs were glowing.

But when I run the UDP applications on both devices, the packets are not going through. The `tcpdump’ tool also is not preinstalled in this image to check.

When I do the UDP transfer betwen board and PC it goes through.

What could be the issue.

Thanks and regards,

harivan

2

Ok I got it, it is because both boards were having same MAC address, I will change and try.

3

Ok, So the packets went through after I manually set the default MAC address of one of the boards to some other address. But my query persists that when two boards are directly connected without L2 switch, they are not auto negotiating and the LEDs are not glowing. It is only through L2 switch that they are able to transfer data. Can some one explain this.

4

Hi @harivan,

I think you will have to manually bring up the network interfaces in the direct connection scenario.

ifconfig eth0 <IP>/<mask> up

eth0 is just an example, you may need to find the correct interface name

Mario