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Joined: Wed Jul 20, 2022 10:13 pm

Force slower SFP speed

Wed Oct 12, 2022 1:56 pm

Hello everybody,

I'm trying to get a RB3011 running with a special Technica Engineering 100BASE-T1 SFP module.
https://technica-engineering.de/en/prod ... fp-module/

Auto negotiation has to be disabled for the SFP port to get into a running state.
The problem is that the link synchronizes to 1 Gbps rate no matter what settings are set for the interface. The module doesn't seem to work properly with this sync state and instead the speed/rate needs to be forcefully reduced to 100 Mbps. But since no settings are impacting the displayed rate of 1 Gbps Full Duplex, this combination may not be working.

Is there any known limitation or situation with the RB3011 or RouterOS where a set SFP speed is not applied?

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