topic Re: Re:NIC210 CELO 1Gbit External Loopback Test in Ethernet Products

NIC210 CELO 1Gbit External Loopback Test

Jodok — Thu, 04 Sep 2025 12:54:12 GMT

Testing NIC210 with an external loopback over a switch fails at 1Gbit link but works with 10/100Mbit Link. The switch is an IP that we own and is synthesized on our fpga. The NIC210 is connectet to one of three ports on that switch. The other two ports are phisically linked with each other.

Because at very first attempts with the Combined End of Line Tool for the Intel(R) Adapters” (CELO) the external loopback allways failed, we reduced switch buffer sizes and 10/100Mbit passed.

To me this looks somehow to a time-out issue but trying to reduce switch-buffersizes even more did not improve the test result for 1Gbit Link. The 1Gbit link and data-lines are fine, it is really only the test that fails. We tested that.

Execution from our embedded-linux system:

./celo64e /NIC=1 /EXTLB {500,500,0,0,0,0} #This test pass

./celo64e /NIC=1 /EXTLB {500,500,500,0,0,0} #This test fails

What is the time-out the CELO external loopback-test is waiting for? What could be the cause of this failing test?

Greetings, Tom

Re:NIC210 CELO 1Gbit External Loopback Test

IntelSupport — Thu, 04 Sep 2025 22:17:18 GMT

Hello Jodok,

Greetings from Intel!

Thank you for contacting Intel. To proceed further with your query, we kindly request the following details:

Product details
System specifications
NIC adapter details (If possible, please share a clear picture with markings)
Was the adapter functioning properly before?
Was the adapter purchased separately or shipped with your system?

Please feel free to respond to this email at your earliest convenience.

Best regards,

Shankith K P

Intel Customer Support Technician

Re: Re:NIC210 CELO 1Gbit External Loopback Test

Jodok — Mon, 08 Sep 2025 07:05:59 GMT

Hello Shankith

Please, I need the following information.

What time-out does the external loop-back test from the "Combined End of Line Tool for the Intel(R) Adapters” (CELO)" waiting for when executing ./celo64e /NIC=1 /EXTLB {0,0,500,0,0,0} .
How big are it's test-frames in byte.
Is the test ok with splitted test-frames coming back from our switch.
Could you send me a document that gives deeper information about how the test works and what bounderies it has.

------------------------------------------------------------------------------------

Product details
- Combined End of Line Tool for the Intel(R) Adapters
System specifications
- Running on Linux (x86)
NIC adapter details (If possible, please share a clear picture with markings)
- WGI210IT
Was the adapter functioning properly before?
- Yes, 10Mbit/ 100MBit and 1000Mbit Connections are working properly.
Was the adapter purchased separately or shipped with your system?
- It is assembled on our own electronics bord on which the system runs.

Greetings,

Tom

Re:NIC210 CELO 1Gbit External Loopback Test

Sreelakshmi1 — Mon, 08 Sep 2025 08:41:49 GMT

Hello Jodok,

Greetings!

Thank you for sharing the details.

As you have mentioned the product details as the Combined End of Line Tool for the Intel® adapters, we kindly request you to confirm the system or board information where the WGI210IT is installed. This will help us investigate the issue further and provide appropriate support.

Best Regards,

Sreelakshmi

Intel Customer Support Technician

Re: Re:NIC210 CELO 1Gbit External Loopback Test

Jodok — Mon, 08 Sep 2025 09:55:27 GMT

Hello Sreelakshmi,

as already mentioned we designed the WGI210IT on our custom electronics.

We talk to it over PCIe 2.x from a COM-Express Modul TQMxE39C1 on which we run a linux distribution.

Please give me answers to my question:

What time-out does the external loop-back test from the "Combined End of Line Tool for the Intel(R) Adapters” (CELO)" waiting for when executing ./celo64e /NIC=1 /EXTLB {0,0,500,0,0,0} .
How big are it's test-frames in byte.
Is the test ok with splitted test-frames coming back from our switch.
Could you send me a document that gives deeper information about how the test works and what bounderies it has.

Greetings

Re:NIC210 CELO 1Gbit External Loopback Test

Sreelakshmi1 — Mon, 08 Sep 2025 10:50:27 GMT

Hello Jodok,

Thank you for your response.

As you are using the WGI210IT on custom electronics, we recommend posting your query in the Intel Embedded Connectivity forum for further assistance. You can access the forum using the link below:

https://community.intel.com/t5/Embedded-Connectivity/bd-p/embedded-networking-connectivity

Additionally, you may raise a support ticket through Intel® Premier Support. For guidance on registration and access, please refer to the following article:

https://www.intel.com/content/www/us/en/support/articles/000057045/ethernet-products.html

Thank you for understanding.

Best Regards,

Sreelakshmi

Intel Customer Support Technician