Flint 3e Upload Speed

Routers
1

Hi,
So I have had a Flint 2 for last couple of years and have been delighted with it, so I have upgraded to the Flint 3e. I have noticed that the upload speeds have been destroyed by the upgrade. I have a 2GB FTTH line which is meant to provide 200Mbps upload speed but since I noticed the degradation with the flint 3e I’m lucky to get 1-2 Mbps, is usually only hundreds of kb. I swapped out the flint 3e for the older flint 2 (still have it with the same settings) and immediately got around 200mb upload with it. Have put the 3e back and is still only hundreds of kbps. I ran a speedtest from SSH into 3e and that reported 224 Mbps so the internet connection is good but something on the 3e is absolutely destroying the upload speed. Download speeds are fine and also makes no difference whether I use ethernet or WiFi, is dreadful upload speed on both. Any idea what might be causing it or how to fix it?

using latest firmware - 4.8.7

2

Hi

Could you help test the following scenarios so we can further investigate the issue:

  1. Please let us know how you are testing the speed. If you are using Speedtest or similar tools, please make sure the same server is selected.

  2. If VPN or similar features are enabled, please try disabling them to see if there is any impact.

  3. Please try disabling the BE6500 network acceleration feature under Admin Panel - Network - Network Acceleration, and see whether the upload speed returns to normal.

  4. Please try testing with the ISP modem - MT6000 - BE6500 topology to confirm whether the issue occurs when the BE6500 is directly connected to the ISP modem.

4
  1. I use both the ookla SpeedTest native app (Speedtest by Ookla - Free download and install on Windows | Microsoft Store) and also fast.com in browser.
  2. I only got/installed this thing in the last couple weeks so have not set up any other features on it yet besides basic WAN connection and AdGuard Home (I use this mainly to be able to set DNS servers per user/device) and I’ve already tried every combination of different DNS settings and it makes no difference to the upload speed.
  3. Is not enabled, I never enable this because it effects and breaks too many other features, my internet speed is fast enough without it.
  4. Not sure what you mean by this one, the BE6500 is connected directly to the ISP modem. I swapped it out with the MT6000 to test (the MT6000 has no issue with upload speed)
5

Thank you for the update.

Yes, we understand that you have currently tested the following two topologies:

  • ISP modem – MT6000, upload speed is normal
  • ISP modem – BE6500, upload speed is abnormal

We would like you to further test the following topology:

ISP modem (LAN Port) <---> (WAN Port) MT6000 (LAN Port) <---> (WAN Port) BE6500 (LAN Port)

and check whether devices connected to the BE6500 still experience abnormal upload speeds.

6

Hi,
So when trying to setup the topology you requested (struggled to get it working) I discovered something very interesting. It would seem like Network Acceleration (NA) is what is causing the degradation in upload speed. While trying to setup the topology I did a full factory reset on the BE6500 and noticed that the upload speeds were fine after that (turns out NA is enabled by default). After a fair bit of trial and error I discovered that when NA is active that upload speeds are good and when it is deactivated the upload speeds die (avg about 1mb). It is not instant change though, so if I enable NA and reboot upload is good and if I disable NA and reboot then upload is dreadful.

7

Thank you for the update.

Could you please let us know:

  1. In which topology was your testing performed that revealed the issue to be related to network acceleration?
    • Is the BE6500 still connected directly to the ISP modem?
    • Or are you using the topology we previously suggested, as shown below?
ISP modem (LAN Port) <---> (WAN Port) MT6000 (LAN Port) <---> (WAN Port) BE6500 (LAN Port)

  1. If you haven’t tested the above setup yet, could you please do so? This would help us confirm whether the issue is specific to connecting directly to the ISP modem.

  2. Please also let us know the model of your ISP modem.

8
  1. BE6500 connected directly to ISP modem
  3. I was unable to setup the topology you requested, whenever I plugged a LAN port from MT6000 into the WAN port of BE6500 the internet went down for all devices plugged into the BE6500. I did the factory reset while trying to get this setup working.
  4. Nokia XS-010X-Q
9

Even after a factory reset?

10

yes, even after reset. When I plugged in the cables no devices on BE6500 could connect to anything. I assumed the BE6500 needed to be setup differently so I isolated that to get into admin webpage and tried changing it from PPPoE to dhcp, bridge mode, etc. nothing worked. I did a factory reset and then noticed the upload speeds back to normal and set out trying to figure out what setting was causing it. I was unable to daisy chain the 2 routers, not sure what setup/config is needed to achieve that.

11

So once the BE6500’s WAN is connected to the MT6000’s LAN port, devices on the BE6500’s LAN are unable to obtain an IP address, access the BE6500 Admin Panel, or access the Internet.
Only after disconnecting BE6500 from the MT6000 can LAN devices obtain an IP address and access the BE6500 Admin Panel.

Is our understanding correct?

12

yes that understanding is correct

13

Thank you for your confirmation. We will check with our team.

14

Just to confirm again: when the BE6500's network acceleration is disabled, do all devices connected via wired or wireless connections experience abnormal upload speeds (only 1-2 Mbps), except for the device currently being tested?

And when enabled, do all devices return to normal speeds (200 Mbps)?
(The wireless devices may not achieve full speed due to potential wireless interference, but should have a significant increase as well.)

15

yes that is exactly what happens

16

Could you please follow the guide below to share the device with us via GoodCloud? We’d like to check this issue remotely.
Technical Support via GoodCloud - GL.iNet Router Docs 4

Please note that you’ll need to send the device’s MAC address and the Admin Panel password to us via private message so we can access

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