perfSONAR User Q&A and Other Discussion

[Garhan Attebury <>]

In the past you could pass the "allow_unsupported_sfp=1" option to modprobe 
and use non Intel optics — at least this was true in older X520-SR2 cards we 
have in some RHEL 6 hosts (and some FreeBSD hosts). Might be worth a try, 
though a quick google shows this may have been ‘fixed’ in newer kernels and 
not work any more.

You could test with:

modprobe -r ixgbe
modprobe ixgbe allow_unsupported_sfp=0


As for NICs supporting Cisco optics, I’ve got no experience. I can say I’ve 
been plenty happy with Solarflare SFN5152F cards and Finisar optics in 
multiple perfsonar hosts.


Garhan Attebury
Holland Computing Center
University of Nebraska-Lincoln
402-472-7761

> On Apr 21, 2015, at 10:37 AM, Greg Clarkson 
> <>
>  wrote:
> 
> When I configured and set up the last PerfSonar install I used the Intel 
> X520-SR2 this will only support Intel SFP+ module. I could never make it 
> work with any CISCO 10 GiG SFP+ modules.
> Is there a different 10 Gig NIC configured in PerfSonar I could use that 
> would support CISCO SFP+ 10 GiG
>  
>  
> Thank You
> Greg Clarkson