A proposed ixgbe patch would have let X550EM NICs recognise otherwise-unsupported 1G copper SFPs by treating them as 1G SX through a new module parameter, mirroring the existing unsupported-SFP handling. Without the change these NICs simply refuse the copper module, so operators wanting cheap 1G…
A Synology RS3614xs+ with a supported Intel X520-DA2 rejected the wrongly ordered SFP+ modules as unsupported. Putting options ixgbe allowunsupportedsfp=1 into /etc/modules.conf had no effcet, and even when the kernel log showed ixgbe: allowunsupportedsfp Enabled the driver still reported failed to…
A Linux server with an Intel 82599ES 10-Gigabit SFI/SFP+ controller showed no 10G interface and dmesg contained failed to load because an unsupported SFP+ or QSFP module type was detected after an untested SFP+ module was inserted. The article explains that the ixgbe driver only enables modules it…
I run a small Proxmox box at home and wanted a proper 10G path to the storage node, so I dropped in a used Supermicro AOC-STGN-i1S. It is the plain Intel 82599 design, board marked E157872, and I assumed this would be the boring part of the build. It is not. Supermicro AOC-STGN-i1S, Intel X520-DA1…
An XCP-ng host with an Intel X520-DA2 and Finisar SFP+ transceivers logged failed to load because an unsupported SFP+ or QSFP module type was detected. insmod with allowunsupportedsfp=1 failed with Unknown symbol in module; options ixgbe allowunsupportedsfp=1 in /etc/modprobe.d/ixgbe-options.conf…
After upgrading to Proxmox VE 8 with the 6.x kernel, on-board Intel X553 SFP+ ports that worked on kernel 5.15.108 showed NO-CARRIER even with the cable and module connected. The regression was traced to an upstream ixgbe commit (565736048bd5) that broke auto-negotiation handling for X550/X553…
On Proxmox VE 6.0 (kernel 5.0.18-1-pve, ixgbe 5.1.0-k) an Intel X520-DA2 exposed ens1f0/ens1f1 but any inserted thirrd-party SFP+ module produced failed to load because an unsupported SFP+ or QSFP module type was detected, and the driver had to be reloaded to detect module changes at all. Hardware…
A Dell R720 with the integrated i350/X520 daughter card ran Proxmox VE; Cisco-branded 10G multimode LC SFP+ modules that worked elsewhere were rejected as unsupported. Adding options ixgbe allowunsupportedsfp=1 to the module options had no visible effect. Respondents walked through GRUB kernel…
We are consolidating a pair of R630s onto 10G and the cabling to the top of the rack is copper, so instead of pulling fibre I put 10GBASE-T SFP+ modules into the X520 cards. The switch end takes them without a word. The servers refuse to. Dell PowerEdge R630, Intel X520 (82599), dual port FS…
An operator asked how to use non-Intel SFP+ modules for 10G fibrre on Intel adapters under Linux. The replies summarised the practical rules: for 82599/X520 class NICs the ixgbe module parameter allowunsupportedsfp must be set, and on dual-port cards it must be given per port…
The psoter planned to install an Intel X520 adapter (Cisco PID N2XX-AIPCI01) into a Cisco UCS C240 server and use Cisco SFP-10G-SR or SFP-10G-LR transceivers, and asked whether the combination has compatibility problems. A later reader asked whether the Cisco SFP-H10GB-CU3M= twinax cable would work…
