Solution GPON ONU Only Negotiate at 1Gbps with Archer BE800/BE900/GE800 V1 10Gbps SFP+ Combo Port
This Article Applied to:
Archer BE800 V1
Archer BE900 V1
Phenomenon Description:
We have been alerted to an issue where some GPON ONUs or sticks are only able to negotiate at 1Gbps when connected to the 10Gbps SFP+ Combo port of our Archer BE800/BE900 devices, despite potentially having a 2Gbps service plan with their ISP.
User feedback can be found in these community threads:
GE800 Router Only Recognizing 2.5G GPON as 1000Mbps Full Duplex
We understand the importance of achieving the full potential of your network and are committed to providing a seamless experience. To assist you in resolving this issue, please follow these troubleshooting steps.
Troubleshooting Suggestions:
1. Check Compatibility
Please ensure that your GPON ONU device is compatible with 10G WAN ports. It's suggested to refer to the manufacturer's specifications for details.
*We have found that certain 2.5Gpbs GPON modules, such as ODI DFP-34X-2C2, HUAWEI MA5671A, and Nokia G-010SA, work well with our routers. If you're using one of these modules, you should be fine with the connectivity as well as potential speed. However, it's always best to check the specifications before purchasing.
2. Firmware Update
Make sure your BE800/BE900 router is running the latest firmware for optimal performance and compatibility. Visit our website for the latest updates and installation instructions.
3. Restart the GPON Module
To refresh the connection, carefully remove the GPON module from the SFP+ Combo port on your BE800/BE900 device. Then, gently insert it back, ensuring that it clicks into place securely to ensure a proper connection. This simple step can often resolve intermittent connectivity issues.
Workaround:
If the GPON ONU stick still negotiates at 1Gbps rather than the expected 2.5Gbps, we recommend exploring the solutions discussed in the GitHub forum. Additionally, we're offering beta firmware for the Archer BE800/BE900 V1 that allows you to modify the port settings.
Archer BE800_V1_1.0.6 (Beta firmware)
Archer BE900_V1_1.1.3 (Beta firmware)
Archer GE800_V1_1.1.5 (Beta firmware)
Note: Please be sure you have read the Terms and Conditions for TP-Link Beta Firmware before proceeding.
After updating, please refer to the steps shared by community member d5aqoep in the following link. These instructions will guide you through modifying the port settings to potentially resolve the negotiation issue:
https://github.com/Anime4000/RTL960x/issues/235#issuecomment-1878263773
Additional Information
As always, we value your feedback. If somehow you continue to experience issues after following the provided troubleshooting and workaround, it's suggested to comment below with the following info. Your input helps us continue to improve and provide the best possible products and support.
• Model, hardware version, and firmware version of your router.
- Brand and model of your GPON ONU.
- Your ISP.
- Is the GPON ONU provided by your ISP, or did you purchase it on your own?
• Detailed issue description, and provide more information on the specific conditions that seem to trigger the problem.
Related Articles:
Common Application Scenarios of SFP+ Interface
Using the BE800 SFP+ port with PON Stick and ISP Fiber
- Copy Link
- Subscribe
- Bookmark
- Report Inappropriate Content
@Kevin_Z Oh, I’ve had exactly the same issue with the BE800 since day one, and I thought it was my ISP’s fault. Interestingly, in my case, rebooting the router 2 or 3 times usually helps — eventually the 2.5 Gbit/s link kicks in properly and works stably.
For reference, I’m using an SFP module LEOX LXT-010S-H.
- Copy Link
- Report Inappropriate Content
@Kevin_Z This issue still persists. I saw that it showed 2.5G for a while, and then it dropped to 1G. Any workaround? I am using HSGQ SFP ONU.
- Copy Link
- Report Inappropriate Content
TaKeN wrote
@Kevin_Z Oh, I’ve had exactly the same issue with the BE800 since day one, and I thought it was my ISP’s fault. Interestingly, in my case, rebooting the router 2 or 3 times usually helps — eventually the 2.5 Gbit/s link kicks in properly and works stably.
For reference, I’m using an SFP module LEOX LXT-010S-H.
Hello @TaKeN, are you using the provided beta firmware on your BE800, or are you using the latest official 1.2.4 Build 20250414 rel.18315 version?
- Copy Link
- Report Inappropriate Content
Sumanjit wrote
@Kevin_Z This issue still persists. I saw that it showed 2.5G for a while, and then it dropped to 1G. Any workaround? I am using HSGQ SFP ONU.
@Sumanjit What is the model of your TP-Link router? Have you updated the provided beta firmware on it?
What is the specific model of the HSGQ SFP ONU? Can you share some pictures or an online link for it?
- Copy Link
- Report Inappropriate Content
@Kevin_Z Hi Kevin,
My router is BE800.
I have attached the GPON stick image.
Also, I am unable to install the beta image as I'm on the latest firmware.
- Copy Link
- Report Inappropriate Content
Hello
I using exactly this: Firmware Version 1.2.4 Build 20250414 rel.18315(4555) But in my case after 2-3 reboots i get 2.5G .
- Copy Link
- Report Inappropriate Content
I'm using Beta 1.2.99 Build 20250806 rel.35019(4153) . This appears to have fixed my degraded speed problem on SFP+ links between BE800 and devices.
(My ISP does not currently support direct Fiber links to customer equipment.)
I'm waiting on full supported release.
Not sure what tp-link did but looking at the log for the latest beta there appears to be much more SFP+ negotiation going on.
In my case any kind of power down (soft, hard, scheduled overnight) with Finisair SFP+ modules was triggering the issue where the link speed would often degrade to 1Gbs. I could usually fix by rebooting the BE800 Main or unplugging and re-plugging the fibre link. It seemed to depend on which device came up first.
It took me a while to realize it wasn't entirely random because Tether doesn't display link speed display and because the BE800 device display can be configured to show smileys and snowflakes but not actually anything useful like link degraded. As part of my own diagnostics I swapped the Finisair with Ampcom and the problem became consistent after every reboot which made it much easier to prove.
I've tested the Beta 1.2.99 Build 20250806 rel.35019(4153) with Finisair and Ampcom SFP+ SR modules, with 10 Metres OM5 and 15 Metres OM3 Fiber. All now appear to work OK.
The Ampcom Copper Dac I started with still doesn't work in any reliable way - sometimes 1Gbs sometimes nothing.
All this saved about 0.1ms latency over RJ45 10Gbe.
- Copy Link
- Report Inappropriate Content
Sumanjit wrote
@Kevin_Z Hi Kevin,
My router is BE800.
I have attached the GPON stick image.
Also, I am unable to install the beta image as I'm on the latest firmware.
Is your BE800 v1 and its firmware version 1.2.4 Build 20250414 rel.18315?
If that is the case, you cannot install the beta firmware provided in this post.
I will check with the team to see if they can provide new beta firmware based on the latest official firmware.
- Copy Link
- Report Inappropriate Content
Hi @StFual ,
Thank you for getting back to us.
I'm glad that your problem is resolved.
But for the Ampcom Copper Dac, we cannot make sure how the DAC cable works with the Archer BE800/900. It's mainly recommended to use the Optical SFP+ module or AOC cable.
More details, please refer to Common Application Scenarios of SFP+ Interface.
Thanks for your support and cooperation.
- Copy Link
- Report Inappropriate Content
Kevin_Z wrote
Sumanjit wrote
@Kevin_Z Hi Kevin,
My router is BE800.
I have attached the GPON stick image.
Also, I am unable to install the beta image as I'm on the latest firmware.
Is your BE800 v1 and its firmware version 1.2.4 Build 20250414 rel.18315?
If that is the case, you cannot install the beta firmware provided in this post.
I will check with the team to see if they can provide new beta firmware based on the latest official firmware.
Yes @Kevin_Z,
I'm on the BE800 v1, running the mentioned firmware.
Firmware Version
1.2.4 Build 20250414 rel.18315(5553)
Hardware Version
Archer BE800 v1.0
- Copy Link
- Report Inappropriate Content
