Zodiak FX sends wrong packets

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Zodiak FX sends wrong packets
« on: April 15, 2019, 07:22:41 PM »

After many tests I understood why the Zodiac FX switches often disconnect from the RYU controller (and also ONOS). For some reason, the Zodiak sends Openflow messages where within the IP field Total len contains a length that is different from the actual length. In particular it happens that the field Total len = 576 Byte while the true length of the packet is 156 Byte. When this happens, the kernel where the controller is located drops the packets and it never reachs the controller generating a loto of re-transmissions. I'm doing other tests and if you want I can send you the TCPDUMP traces where you can see this error clearly.

Best regards,


Paul Zanna

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Re: Zodiak FX sends wrong packets
« Reply #1 on: April 22, 2019, 02:45:45 PM »
Hi Sebastian,

Do you have a particular test that I can run to help recreate this issue?