FAQ 1: How to fix Cloud Gateway Fiber (UCG Fiber) failing to recognize the Luleey 2.5G XPON SFP ONU (Model: LL-XS2510)?

Answer: Follow these steps to resolve the recognition issue:

  1. Prepare the Luleey module first (via a Media Converter for web interface access):
    • Configure key parameters in the module’s web interface:
      • Set PLOAM Password to “0” and click “Apply Settings”.
      • Enter the GPON SN (e.g., “AVMGxxxxxxxx”) obtained from your existing Fritzbox 5590 Fiber (ensure it matches the “Device Serial Number” too), then apply and reboot.
  2. Fix the core compatibility issue:
    • Access the module’s web interface > “VLAN Settings” > switch the VLAN mode from the default “Auto provided by ISP” to “Transparent Mode”. Save and reboot the module.
  3. Reconnect to UCG Fiber:
    • Insert the module into UCG Fiber’s Port 7. In the UCG web interface, configure WAN1: bind it to Port 7, set VLAN ID 7, and enter your Telekom PPPoE account credentials.The module will then be recognized, and IP allocation will work normally.

FAQ 2: What speeds does the SFP+ port of Cloud Gateway Fiber (UCG Fiber) natively support? How to achieve 2.5Gbps with a 2.5G XPON module?

Answer:

  • Native speed support: The SFP+ port of UCG Fiber only natively supports 1Gbit/s and 10Gbit/s (no 2.5Gbit/s option in the “Link Speed” settings).
  • How to achieve 2.5Gbps: Use intermediate devices to bridge the speed gap:
    1. Media Converter: Use a 2.5G-compatible converter (e.g., Media Converter) to connect the Luleey 2.5G XPON module to UCG Fiber (note: bottlenecks may occur—e.g., actual speeds reach only 1004/250 Mbps for 1000/500 Mbps bandwidth plans).
    2. 2.5G-Supporting Switch: Use a switch with 2.5G ports (e.g., USW-Pro-Aggregation, where all ports support 2.5Gbit/s). Manually set the switch port to “2.5Gbps FDX” before connecting the Luleey module and UCG Fiber—this ensures stable 2.5Gbps performance.

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7 thoughts on “How to handle the issue of Cloud Gateway Fiber access the Luleey XPON module LL-xs2510”

  1. kasopal856 says:
    November 16, 2025 at 16:41

    How can I access xs2510 module web UI without media converter? I’m setting the static route in Cloud Gateway (UnifI OS) settings to route requests to 192.168.1.0/22 network to WAN1 (which is mapped to SFP module in WAN mode), but can’t access the 192.168.1.1 yet. Is XS-LL2510 supporting access to WebUI without plugging the GPON network to the module (meaning RS_LOS)? My ISP asked to configure VLAN first before plugging the fiber inside.

    1. luleey says:
      November 16, 2025 at 21:12

      Hello, please try to disable the VLAN of the router first, and then enable the VLAN configuration after setting up XPON STICK complete. thank you.

      1. kasopal856 says:
        November 17, 2025 at 19:07

        Thank you for reply. I’m not sure how to disable VLAN of the Unify router. My whole goal is to access the web GUI of the SFP module at 192.168.1.1 – I’ve tried so far following – while SFP port of Unify router is in WAN2 mode, I’ve created a static route for 192.168.1.0/24 for WAN2, did not work.
        I’ve also tried setting UDR7 router to 192.168.6.1, SFP switched from WAN2 to LAN mode and assigning the IP 192.168.1.37 on my PC – did not help either. I don’t want to reset the XS2510 by multiple inserts of Fiber cable since I’ve promised my provider not to mess with it, but I have my doubts that module is serving webUI at 192.168.1.1 or it does not serve it in cable loss state (since I did not connect the fiber)

  2. accounts-6050 says:
    October 9, 2025 at 05:19

    I dont have another Router / Modem. I could sucessfully registered the modem with the default Device Serial number. I can’t access the internet. The UGC Fiber shows a green port but no device. I cant access the module using any of both SFP+ ports.

    I can’t find the transparent VLAN setting. Where is it. I am on the latest firmware (new ui).

    Is this Ip configuration fine?
    UGC Fiber: 192.168.178.1
    Luleey: 192.168.178.2

    1. luleey says:
      October 9, 2025 at 12:14

      hi, the transparent VLAN settings can be modified in XPON STICK WEB-UI with SFU firmware.

      1. accounts-6050 says:
        October 9, 2025 at 13:22

        This actually solved my problem. I was using the HFU firmware. I installed the SFU, changed the VLAN setting and it worked instantly.

        1. luleey says:
          October 9, 2025 at 15:34

          good job. HGU is not useful for everyone. if only ONU function you need, SFU is best.

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