Hardware Specifications

In order to be able to set 2.5G speed you will have to patch your kernel’s bnx2x module. The easiest way to do so is via DKMS which rebuilds only that module:

• DKMS for Linux 6.0.y

It also adds a module option that can be set to disable SFP TX fault detection, otherwise you won’t be able to access your SFP mini-ONT if serial output to SFP is enabled (you can alternatively disable the serial in the SFP module).

Unfortunately, despite the patches, you will still have to use UEFI eDiag to unlock 2.5G capabilities:

• How-to enable 2.5G capability via UEFI eDiag

At this point you will be able to use the following command to set the speed to 2.5G:

sudo ethtool -s your_network_interface autoneg off speed 2500 duplex full

Miscellaneous Links

• Come avere i 2.5 Gbps su un unico dispositivo senza il Fastgate