Hello,
The HG8145V5 is a carrier product. The forum is oriented to enterprise products
Huawei ONT needs to be used with OLT and network management.
The router model you provided may be a bridged device.
If you want to activate LAN2, LAN3 and LAN4 interfaces, please check the settings of your ONT on the OLT side.
The following four commands are usually used:
ont port native-vlan 0 30 eth 1 vlan xxxx priority 0
ont port native-vlan 0 30 eth 2 vlan xxxx priority 0
ont port native-vlan 0 30 eth 3 vlan xxxx priority 0
ont port native-vlan 0 30 eth 4 vlan xxxx priority 0
For more information about the HG8145V5, click HG8145V5.
I hope it can help you!
Thanks