Intel

If an error like this shows up in your logfiles: ix0: <Intel(R) PRO/10GbE PCI-Express Network Driver, Version - 2.5.15> ix0: Unsupported SFP+ Module I might be able to help. It’s not as straight forward as with linux, but we’ll make it work. First off we need to modify the sourcecode of /usr/src/sys/dev/ixgbe/ixgbe.c as follows: static int allow_unsupported_sfp = TRUE; And then we need to recompile the kernel module: cd /usr/src/sys/modules/ixgbe && make install and then reboot our system. If everything goes well the interface will show up somewhat like this when executing ifconfig: ...

I recently got myself a Intel X520-DA2 10GBE NIC and some SFP-10G-SR+-SO SFP+ Modules to toy around with. After assembling the PCIe card I was luckily surprised that my kernel brought up the NIC without any difficultys, so I plugged my SFP+ modules into the server, only to be greeted with: ixgbe 0000:24:00.1: failed to load because an unsupported SFP+ module type was detected. ixgbe 0000:24:00.1: Reload the driver after installing a supported module. Yay. After 2 hours of useless googleing I asked a friend who happens to be a linux kernel maintainer, and luckily he knew just the fix therefore: ...