Overview

Deploying third-party or OEM Wi-Fi ONTs on a FiberHome OLT platform requires specific provisioning adjustments to enable PPPoE authentication relay. While FiberHome OLTs natively support standard OMCI-managed ONTs, generic ONUs often need additional CLI-level configuration to pass PPPoE discovery frames correctly. This FAQ addresses the most critical pre-sales and post-sales questions engineers and procurement teams ask when integrating OEM ONTs with FiberHome OLT infrastructure.

Frequently Asked Questions

Q1: Does a FiberHome OLT support PPPoE authentication relay for OEM Wi-Fi ONTs?

Yes, FiberHome OLTs support PPPoE authentication relay for OEM Wi-Fi ONTs, but only after enabling specific interconnect switches and configuring the correct service profiles. The OLT must have the PON Interconnection Switch and Union Interconnection Switch parameters set to enable on the GPON line card. Additionally, the ONT must be authorized using a compatible service model profile that permits transparent forwarding of PPPoE discovery and session frames . Without these adjustments, OEM ONTs may register successfully yet fail to establish a PPPoE session through third-party routers .

Q2: What CLI commands are required to enable third-party ONT authentication on a FiberHome OLT?

The core CLI sequence involves accessing the GPON line card directory and enabling the interconnect switches. The required commands are: cd gponlinecard followed by set pon_interconnect_switch slot <slot_number> enable and set union_interconnect_switch slot <slot_number> enable. For RP1000 firmware and later, additional OMCI exception handling may be required: cd omci, set exception_detect para flag disable, then set policy param pon-interconnect-switch enable logicsn-auth-mode ctc . These settings are volatile and must be reapplied after OLT reboot.

Q3: Why does an OEM Wi-Fi ONT show as registered but fail to pass PPPoE from a third-party router?

The most common cause is a mismatch between the ONT's bridge mode behavior and the OLT's VLAN handling expectations. When an OEM ONT operates in bridge mode, the OLT must be configured to pass the customer VLAN transparently without modifying the Ethernet frame. If the PON Interconnection Switch is disabled, the OLT may strip or alter VLAN tags before the PPPoE frames reach the uplink, preventing authentication. Field reports indicate that even after firmware updates, certain ONT models require specific CoS configurations on the OLT to pass PPPoE correctly .

Q4: What VLAN configuration is needed on the FiberHome OLT for PPPoE relay to work?

The uplink port must have the PPPoE service VLAN configured and associated with the target PON ports. In the FiberHome ANM-2000 management interface, navigate to Service Config Management and create a Service Model Profile that matches the OEM ONT's capabilities. The service VLAN (e.g., VLAN 220 for internet) must be added to both the uplink SFP port and the specific PON port where the ONT is authorized. For GPON deployments, the VLAN should be configured with the appropriate CVLAN mapping in the VEIP data service config section .

Q5: Are there FiberHome OLT firmware versions that better support OEM ONT PPPoE relay?

Firmware versions RP0700 and RP1000 have documented compatibility procedures for enabling third-party ONU support. However, RP1000 with hardware S1B is reported to work more reliably than R1P and R2P variants for the OMCI exception bypass method . For the AN5516 series, enabling the union_interconnect_switch is the critical step regardless of firmware version. Always verify the version command output to confirm both GPON card and uplink card software versions before attempting OEM ONT provisioning .

Q6: Can PPPoE authentication be relayed when the OEM ONT operates in router mode rather than bridge mode?

Yes, but the configuration requirements differ. When the OEM ONT performs PPPoE dialing internally (router mode), the OLT only needs to pass the PPPoE session traffic as regular IP traffic. The critical requirement is that the ONT's WAN interface VLAN matches the service VLAN configured on the OLT uplink. If the ONT is in bridge mode and a downstream router handles PPPoE, the OLT must pass the PPPoE discovery frames transparently, which requires the interconnect switch enabled. Router-mode ONTs typically work with standard VLAN provisioning alone .

Q7: How do I troubleshoot PPPoE relay failures on a FiberHome OLT with OEM ONTs?

Start by verifying the PON interconnect status using show pon_interconnect_switch slot <slot> from the gponlinecard CLI directory. Both PON Interconnection and Union Interconnection must report enable. Next, confirm the ONT's authorized service profile includes the correct VLAN and that the uplink port carries that VLAN untagged or tagged as required. If the ONT registers but PPPoE fails, check whether the router's MAC address is being learned in the OLT's MAC table. Some deployments require disabling exception_detect in the OMCI module to allow non-FiberHome ONTs to forward PPPoE frames correctly .