Hi, I'm going to take a guess that this is the problem related to my post https://forum.mikrotik.com/viewtopic.php?t=191627 or https://forum.mikrotik.com/viewtopic.php?t=186200 (I've recently RMA'd the CCR2116 as well and same issue keeps happening). That being said, I did upgrade to 7.8B2 and it s...

My CCR2004-16G-2S+ have exactly the same issue. My gpon (G-010S-A) doesn't work when plugged in (PPPOE can't connect, zero TX/RX on the SFP interface). I have to go to the SFP interface and turn off the auto-negotiation, then force the speed to 1G or 2.5G. After click on the apply, the PPPoE works. ...