Re: A question about ixg(4)

On 05.05 11:16, Alexander Schreiber wrote:
> On Sat, May 02, 2026 at 02:20:04PM +0300, Staffan Thomen wrote:
>> Hello list,
>>
>> I have a pair of ixg(4) devices in one of my systems, 82599EB is the
>> model I think ("Intel(R) PRO/10GbE PCI-Express Network Driver, Version -
>> 4.0.1-k")
>>
>> Now I haven't used SFP+ before, but I have heard that there might be
>> vendor lock-in going on that some NICs only accept modules of their own
>> manufacture.
> 
> Yes, Intel is particularly infamous for e.g. their 10G NICs typically only
> officially wanting to use Intel marked optics. So you can either buy the
> Intel optics or ... have optics marked as Intel. E.g. FS.com offers to
> mark transceivers/DACs as whatever vendor you need. Alternatively, one
> can use tools like the Flexoptix Flexbox to that that oneself.
> 
> Similar revenue-enhancing games are also played by some switch vendors.
> 
>> My question then is, will this be a problem for this intel one?
> 
> Quite likely. Observed behaviour from Intel X553 on Linux with non-Intel
> DAC:
>   - external "link detected" LED comes on and stays on
>   - poking around with ethtool indicates that the "non-supported" DAC is
>     quite functional, but the NIC refuses to pass traffic because the DAC
>     doesn't say Intel
> Plug in a non-Intel DAC marked as Intel: all is fine.

Wondeful :-(

Thank you for your thorough response though. I have probably heard of
fs.com before but then just forgotten about it looks like a worthy site
to bookmark!

Staffan

-----BEGIN PGP SIGNATURE-----
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=bJex
-----END PGP SIGNATURE-----