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NIC passthrough only working for 2 of 4? [SOLVED]

Featured Replies

Hi Everyone

 

I needed more NIC's and until I get 10gbe card I wanted to use one more 4xNIC intel card!

Have I configured this wrong?

 

My cards:

image.png.060288d44fde142d9b6830b195dc3ec6.png

 

The 4 from the "Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01)" works fine!

But only the first two of the: "Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)" works?

 

I have created the Stub like this:

image.png.e8b5e2f011ed8d038758ef57b8802b92.png

 

It's like the last 2 NIC's are deactivated? I can see a short connection flash orange but no green activity led?

It's almost like I only have half of the card? - Could this be some PCi Express limitation of my MB?

Shared lanes? or did I just configure this wrong? "8086:10e8,8086:1521"

 

 

 

Edited by casperse

  • 2 weeks later...
On 10/27/2020 at 9:27 AM, casperse said:

Hi Everyone

 

I needed more NIC's and until I get 10gbe card I wanted to use one more 4xNIC intel card!

Have I configured this wrong?

 

My cards:

image.png.060288d44fde142d9b6830b195dc3ec6.png

 

The 4 from the "Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01)" works fine!

But only the first two of the: "Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)" works?

 

I have created the Stub like this:

image.png.e8b5e2f011ed8d038758ef57b8802b92.png

 

It's like the last 2 NIC's are deactivated? I can see a short connection flash orange but no green activity led?

It's almost like I only have half of the card? - Could this be some PCi Express limitation of my MB?

Shared lanes? or did I just configure this wrong? "8086:10e8,8086:1521"

 

 

 

DId you ever get this figured out? I have a similar issue.

  • Author
13 hours ago, tacobelldog52 said:

DId you ever get this figured out? I have a similar issue.

No, but I have a idea about what could be causing this, but so far couldn't prove my theory

In the instructions for this specific MB some of the PCie slots are shared in speed

 

image.png.5f1ad8a7c43c36a621e6796ab016184f.png

 

Reading the instruction it seem that the last slot PCIEX4_2 is shared with the M2M connector not the M2A! 

BUT - The funny thing is that I don't have anything installed in the M2M connector !!!

image.png.0d93d6b4f644914219cfcfa8c03e2ae7.png

image.png.d65231d83eac3d0e18234dab516e6cff.png

 

So I want to try to remove the SATA connections and see if that will fix my PCIEX4_2 slot?

Problem is that I then have to replace my HD controller and cables not something easy to do 😞

 

Edited by casperse

  • Author

Update: I got this working after a BIOS update to my motherboard I could see the card and connection

image.png.7e40878922213bc3ce5dc7ad6e63895a.png

After this I could use all 4 ports on both cards ;-)

 

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