I am using CentOS7 7.5.1804. I have a Intel 82599 based 10gig SFP+ card. When I try my SFP's I get:
failed to load because an unsupported SFP+ or QSFP module type was detected. I tried everything I found online[1] including adding to the kernel options:
ixgbe.allow_unsupported_sfp=1 I also tried
modprobe ixgbe allow_unsupported_sfp=1 In fact when afterwards if I did modinfo -p ixgbe I got back:
[root@codd-b01 ~]# modprobe ixgbe [root@codd-b01 ~]# modinfo -p ixgbe max_vfs:Maximum number of virtual functions to allocate per physical function - default is zero and maximum value is 63 (uint) allow_unsupported_sfp:Allow unsupported and untested SFP+ modules on 82599-based adapters (uint) debug:Debug level (0=none,...,16=all) (int) [root@codd-b01 ~]# Below you can see all the steps including showing that Linux wont allow the SFP AFTER I unloaded and reloaded the module.
[root@codd-b01 ~]# dmesg | grep SFP [ 8.981009] ixgbe 0000:5f:00.0: failed to load because an unsupported SFP+ or QSFP module type was detected. [ 8.994928] ixgbe 0000:5f:00.1: failed to load because an unsupported SFP+ or QSFP module type was detected. [root@codd-b01 ~]# modprobe -r ixgbe [root@codd-b01 ~]# modprobe ixgbe [root@codd-b01 ~]# modinfo -p ixgbe max_vfs:Maximum number of virtual functions to allocate per physical function - default is zero and maximum value is 63 (uint) allow_unsupported_sfp:Allow unsupported and untested SFP+ modules on 82599-based adapters (uint) debug:Debug level (0=none,...,16=all) (int) [root@codd-b01 ~]# dmesg | grep SFP [ 8.981009] ixgbe 0000:5f:00.0: failed to load because an unsupported SFP+ or QSFP module type was detected. [ 8.994928] ixgbe 0000:5f:00.1: failed to load because an unsupported SFP+ or QSFP module type was detected. [ 6324.524966] ixgbe 0000:5f:00.0: failed to load because an unsupported SFP+ or QSFP module type was detected. [ 6324.538955] ixgbe 0000:5f:00.1: failed to load because an unsupported SFP+ or QSFP module type was detected. [root@codd-b01 ~]# The best I found was [2] but I don't have a RHEL subscription.
[1] For instance https://ahelpme.com/linux/kernel/missing-network-interface-10g-intel-x520-with-error-failed-to-load-because-of-unsupported-sfp/
