Forcing 1Gbps on SFP+

[Jesper 1]

Hi
Just upgraded my pfsense router and imported a config from a previous VM that I run it on before. In my router I have a X520-DA2 E10G42BTDA dual sfp+ adapter.

On one of the ports I would like to force it to run at 1gbs. But there is no options available for that. Under Speed and Duplex: Media supported by this interface there is only auto select to choose from.

In the datasheet I found it says: "Broad selection from 10/100 Mbps to 10 Gbps, for copper or fiber, from PCI to PCI Express*, BASE-T to SFP+"

Could it be that my xml that I imported somehow affects this? Or any other suggestion to how I can force it to 1 Gbps?

[Patch]

@jesper-1 said in Forcing 1Gbps on SFP+:

previous VM

Is pfsense running bare metal now or still a VM?

[Jesper 1]

@patch Thanks for your reply. Now it's on bare metal

[bingo600]

@jesper-1
Are you using fiber ?

I in "old days" Fiber SFP's were "locked" to the bitrate they (optics) were "Born with"
Copper could to speed switching.

/Bingo

[Jesper 1]

@bingo600 said in Forcing 1Gbps on SFP+:

Are you using fiber ?
Yes it's fiber. Does this make it impossible?

[Luca De Andreis]

@jesper-1

If you are using a multispeed transceiver, then 1 or 10 gbps is possible. There are 1 gbps SFP transceivers (SFP + is backward compatible), there are 10 gbps SFP + transceivers and 1 or 10 gbps multispeed SFP + transceivers. It depends on what you use.

[stephenw10]

The available link speeds depends on the SFP(+) module you're using.

For example DAC cables usually don't allow setting a link speed at all.

Using a 1G module is probably the best way to ensure it.

Steve

[Jesper 1]

@luca-de-andreis said in Forcing 1Gbps on SFP+:

If you are using a multispeed transceiver, then 1 or 10 gbps is possible. There are 1 gbps SFP transceivers (SFP + is backward compatible), there are 10 gbps SFP + transceivers and 1 or 10 gbps multispeed SFP + transceivers. It depends on what you use.

I thought so as well, so I tried with a unifi transceiver that I use in a switch set to 1gbps. But there were still not any option to choose a different link speed in pfsense. I even rebooted the router with the new transceiver installed, and there is no option to change anything.

[Jesper 1]

@stephenw10 said in Forcing 1Gbps on SFP+:

Using a 1G module is probably the best way to ensure it.

Okey, I will try that. Thanks

[Jesper 1]

@stephenw10

Alright. I swapped around some transceivers temporary in my switches to try it out. I can not test it fully, due to my layout with switches in different rooms. But it seemed like it connected to the switch with a 1G transceiver on auto negotiation. I have ordered more transceivers now. Thanks a lot.

[Jesper 1]

@stephenw10
Just to confirm, if anyone else reads this thread and have the same problem.

Installing a 1G transceiver in the SFP+ port on auto negotiation, did solve my problem, and I'm using it as a WAN interface now on 1G speed.