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I210 MAC address programming issue

AWang31
Beginner
2,366 Views

hi,

Recently I met a curious issue about I210 MAC address programming.

The EEPROM image is offline programmed with default MAC address (00:A0:C9:00:00:00).

And the MAC address can be changed only once online with eeupdate64e.efi tool.

I want to know where is the problem. Does anyone meet?

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AWang31
Beginner
1,261 Views

hi Carlos_A,

Thanks a lot for your hint, while I'm still confused.

I use I210 with an external flash memory. And after I update the MAC address, I'll power down and power on the product.

For the pin12 the document mentioned, I tried the pull-up or pull-down scheme.

I can't figure out why the MAC address can only be changed once. Certainly, after reprograming the flash offline, the MAC address can be changed once online again.

View solution in original post

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CarlosAM_INTEL
Moderator
1,261 Views

Hello, erichh:

Thank you for contacting Intel Embedded Community.

The information that may help you is the answers to the questions 2.25 and 2.23, on page 9 of the https://www.intel.com/content/dam/www/public/us/en/documents/faqs/ethernet-controller-i210-i211-faq.pdf Intel(R) Ethernet Controller I210/I211 Frequently Asked Questions (FAQs) document # 335346.

We hope that this information may help you.

Best regards,

Carlos_A.

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AWang31
Beginner
1,262 Views

hi Carlos_A,

Thanks a lot for your hint, while I'm still confused.

I use I210 with an external flash memory. And after I update the MAC address, I'll power down and power on the product.

For the pin12 the document mentioned, I tried the pull-up or pull-down scheme.

I can't figure out why the MAC address can only be changed once. Certainly, after reprograming the flash offline, the MAC address can be changed once online again.

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