topic Re:Stablish uni-directional ethernet link in Ethernet Products

Stablish uni-directional ethernet link

alireza11048 — Wed, 27 Sep 2023 12:08:57 GMT

Hi,

I am trying to establish a uni-directional Ethernet link where a singular fiber is used to transmit data to the receiver where both sides use ixgbe as driver. The Rx of the transmit side and the Tx of the receive side are not physically connected, like in a Data diode scenario.

To force links state to UP(as soon as I detach the TX line from one side, both side link status goes DOWN), i set FLU bit in AUTOC register and also i set the speed with LMS bits in the AUTOC register.

Links successfully become in up state, but I can not receive UDP packets that are sent from the TX side on the RX side.

Any advice to solve the problem in this mode is appreciated.

Re:Stablish uni-directional ethernet link

Yogaeasvaran — Mon, 02 Oct 2023 08:27:02 GMT

Greetings Alireza,

Thank you for contacting Intel Customer Support.

We will check you request from our resources and get back to you within 2 business days.

Thank You & Regards,

Yogaeasvaran

Intel Customer Support

Re:Stablish uni-directional ethernet link

Yogaeasvaran — Tue, 03 Oct 2023 14:51:19 GMT

Greetings Alireza,

Thank you for contacting Intel Customer Support.

We need the SSU log for us to isolate the issue further.

Could you please provide us the SSU follow the link below:

Help Guide for the Intel® System Support Utility

Thank You & Regards,

Yogaeasvaran

Intel Customer Support

Re: Re:Stablish uni-directional ethernet link

alireza11048 — Wed, 04 Oct 2023 09:09:35 GMT

Thanks for your reply,

output of the SSU file is attached.

P.S: i also want to mention that the Ethernet controller which i am experimenting with it is intel 82599ES and the driver is ixgbe version 5.15.2.

thanks

Re:Stablish uni-directional ethernet link

Yogaeasvaran — Sun, 08 Oct 2023 07:37:30 GMT

Greetings Alireza,

Thank you for contacting Intel Customer Support.

To be informed that this type of configuration is not supported.

If you have any further questions or queries, please kindly let us know.

Thank You & Regards,

Yogaeasvaran

Intel Customer Support

Re:Stablish uni-directional ethernet link

Yogaeasvaran — Sun, 15 Oct 2023 08:11:54 GMT

Greetings Alireza,

Regarding your case number 05930542, we are following up to find out if we can proceed to close this thread?

Please reply to this thread to confirm, so we can continue helping with a resolution. Looking forward to receiving your reply!

Thank You & Regards,

Yogaeasvaran

Intel Customer Support

Re: Stablish uni-directional ethernet link

alireza11048 — Sun, 15 Oct 2023 09:58:01 GMT

thank you for your follow-up,

I think in general this use case should be possible with the Intel ethernet products, as it was done in the "Development of Unidirectional Security Gateway Appliance using Intel 82580EB NIC Interface" paper.

but probably it needs special register-configuration of the ethernet controller.

Re:Stablish uni-directional ethernet link

Yogaeasvaran — Mon, 16 Oct 2023 09:41:29 GMT

Greetings Alireza,

Thank you for contacting Intel Customer Support.

Probably Yes as you mentioned.

We can suggest you post this question in embedded community to get the information you have requested.

Link: https://community.intel.com/t5/Embedded-Products/ct-p/embedded-products

Please do let me know if we can proceed for the closure.

Thank You & Regards,

Re:Stablish uni-directional ethernet link

Yogaeasvaran — Sun, 22 Oct 2023 10:18:07 GMT

Greetings Alizera,

Kindly note that as we have not received any response from our previous follow-ups, we will be closing this request.

If you have any more questions in the future, please don't hesitate to post a new question, as this thread will no longer be monitored.

Thank You & Regards

Yogaeasvaran

Intel® Customer Support