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无法加载 SFP+

tag-icon • tag-icon centos networking kernel-modules
无法加载 SFP+

我使用的是 CentOS7 7.5.1804。我有一个基于 Intel 82599 的 10gig SFP+ 卡。当我尝试 SFP 时，我得到：

failed to load because an unsupported SFP+ or QSFP module type was detected.

我尝试了在网上找到的所有内容[1]，包括添加到内核选项：

ixgbe.allow_unsupported_sfp=1

我也尝试过

modprobe ixgbe allow_unsupported_sfp=1

事实上，当我执行 modinfo -p ixgbe 后，我得到了：

[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 ~]#

下面您可以看到所有步骤，包括显示在我卸载并重新加载模块后 Linux 不会允许 SFP。

[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 ~]#

我发现最好的是 [2]，但我没有 RHEL 订阅。

[1]例如https://ahelpme.com/linux/kernel/missing-network-interface-10g-intel-x520-with-error-failed-to-load-because-of-unsupported-sfp/

[2]https://access.redhat.com/solutions/275333

答案1

事实证明，光学电缆（我使用的是 DAC）一侧的固件存在一些奇怪的问题。如果调换一下就可以了。

答案2

您的 SFP+ 模块是什么品牌？ Intel NIC 应该能够识别 Intel 的收发器。如果您使用在 EEPROM 中编程英特尔代码的第三方模块，那应该没问题。

您是否考虑过 DAC 电缆？它是两端带有 SFP+ 连接器的直接连接电缆。如果您在 Intel 网卡中使用 DAC 电缆，它不会像收发器那样读取 EEPROM。

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