"failed to load because an unsupported SFP+ module type was detected" problems with ixgbe driver under RHEL

Solution Verified - Updated -

Issue

  • We experience a problem with the ixgbe driver with the Intel Corporation 82599EB 10-Gigabit SFI/SFP+. When trying to load the ixgbe module, it often fails:
# grep ixgbe /var/log/messages

Nov 19 11:07:03 hostname kernel: ixgbe 0000:0e:00.1: MAC: 2, PHY: 1, PBA No: G18786-002
Nov 19 11:07:03 hostname kernel: ixgbe 0000:0e:00.1: Intel(R) 10 Gigabit Network Connection
Nov 19 11:07:03 hostname kernel: ixgbe 0000:0f:00.0: PCI INT A -> GSI 40 (level, low) -> IRQ 40
Nov 19 11:07:03 hostname kernel: ixgbe 0000:0f:00.0: failed to load because an unsupported SFP+ module type was detected.
Nov 19 11:07:03 hostname kernel: ixgbe 0000:0f:00.1: PCI INT B disabled
Nov 19 11:07:03 hostname kernel: ixgbe 0000:0e:00.0: p6p1: NIC Link is Up 10 Gbps, Flow Control: RX/TX
  • What is the performance impact of using an unsupported spf via editing modprobe?

  • How to know which SPF modules are supported by the server and operating system?

Environment

  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Intel Corporation 82599EB 10-Gigabit SFI/SFP+, ixgbe driver
  • Intel 10G 2P X520 Adapter

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