Dear All, I have never used fibre connection yet. Now I got a server where the HW (Dell R440) and the network connections are provided by others, my task is to install a Linux on it.
I installed a fresh Debian 12, the built-in NIC (BCM5720) is working, it also can see the BCM57412 card ports, but I have no link for some reason. Here are the relevant outputs: https://pastebin.com/ghbSySfC As you can see, there is no link detected unfortunately, one of them has unknown speed, the other can see that the speed is 10000Mb/s. Additional information can be that the server is connected to a fibre switch, wich is used by several other Windows boxes. They used the very same fibre cable (LC/UPC - LC/UPC - MM - DX whatever it means). What do I miss here? What else do you guys need to be able to help me out? :) Thanks, Misi
