Sadly we don’t have control of the NTU but will request our backhaul provider forces 1Gbps (not autoneg) and test this.

BTW our work around of placing a tplink media converter in between the ports worked.

Is this solved? I have a 1Gbps NTU connecting to a CCR1036....won’t work with a SFP (have tried generic and MIKROTIK) shows on but no link on other device!?