Hi friend.
1. The HG863 does not support the transparent transmission of OSPF packets or the transparent mode.
2. By default, the HG850a transparently transmits all packets, including OSPF packets.
3. By default, the HG824x ONT does not support the transparent transmission of OSPF packets. However, you can enable the transparent mode in the service profile of the OLT to transparently transmit OSPF packets. Use the following command:
MA5600T(config-gpon-srvprofile-102)#transparent enable
I hope I can help you.