SG200 Switch not forwarding Packet

Question

Hello,
I have a problem with my SG200-08 Switch the switch not fowarding a special Packet.
I try to run a simple Profinet installation for testing on the switch but it didn´t work correct. A special packet (Profinet error message) was not forwarded.
I have tried it with different Profinet masters with Siemens Profinet master it works without of problems. With Rexroth master it dosn´t work. But it is the same packet only another Mac Address.
I have added two Wireshark logs, where I have mirrored the slave and the master port. With the Siemens master all packets are forwarding (every packet is double loged) with the Rexroth master the alarm packet was not forwarding (the alarmpacket is lost between the ports).
With a not managed Switch it is no problem too run both Installations korrekt.
I have tried the Factory devault Settings of the switch and too deaktivate all services of the switch (like Spanning Tree, ..) but it was all the same, the Packet was not forwarded.
Has someone a idea which is the cause of the packet drop?

Answer 1

Hi Ulf, the switch doesn't filter traffic and this particular model doesn't have any special connection controls like ACL.
Features that may be service affecting include-
Spanning tree (portfast, bpdu flood/filter)
Port negotiation (speed/duplex)
Energy efficient ethernet
Bonjour discovery
Storm control (which is disabled by default)
I couldn't think of anything else that may be service affecting. You may disable spanning tree, manually set the port speed, disable EEE and bonjour if you want. However, I don't feel it will resolve your problems but it is worth trying if you feel the switch is the problem. Since the packet is forwarding correctly, it would appear to be a localized system setting.
-Tom
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