@MZRecords I'm pretty sure its VLAN issue. Try to find out the correct VLAN. For some reason, these Realtek/Mediatek based ONT's are not handling the VLAN correctly from Alcatel/Nokia ONT (ALU).
I've shared my experience in another thread here. In Dasan/Huawei/Nokia ONTs provided by airtel, we need to set 100 as VLAN. But in TP-Link G3 and ODI SFP, its different. Initially when i started using G3, it was 950. Then it was changed to 980 when i Airtel moved my account to different BRAS. Now recently its again changed to 1503. Even now if i connect back Dasan ONT, i've to set 100 as VLAN, but the same will not work with G3 or ODI.
So you need to VLAN scan and find out the same. And configure that in your router.
I've shared my experience in another thread here. In Dasan/Huawei/Nokia ONTs provided by airtel, we need to set 100 as VLAN. But in TP-Link G3 and ODI SFP, its different. Initially when i started using G3, it was 950. Then it was changed to 980 when i Airtel moved my account to different BRAS. Now recently its again changed to 1503. Even now if i connect back Dasan ONT, i've to set 100 as VLAN, but the same will not work with G3 or ODI.
So you need to VLAN scan and find out the same. And configure that in your router.