New to the GL.iNet MT6000

Technical Support for Routers
1

Hi, guys

I just upgraded from a combined modem/router unit I had (Arris SGB8300) into its individual components by installing a dedicated modem (Arris SB8200) and router (GL.iNet MT6000 Flint 2), just recevied it today

I did a "Bufferbloat test" on the combined modem/router and got a C, and my main purpose for upgrading was to see if I can improve this letter grade, as I noticed network jitters during gaming via the streaming application "Moonlight"

I enabled SQM in the admin panel of the MT6000, but I noticed that my score got worst (D), and streaming statistics in moonlight also also worsened.

I want to provide pictures starting with the hardware to see where exactly the problem is.

Firstly, I'm running firmware 4.7.0 on the MT6000

My hardware setup is as such:

  • Coaxial cable connected to the modem
  • Cat 6 Ethernet cable connected from the Modem into the 2.5ghz WAN port.
  • WAN/LAN port is connected to my PC, via Cat 6 Ethernet cable
    home setup
    home setup4032×3024 2.83 MB

Speed Test::
Download: 940504 Kbps
Upload: 23800

SQM settings:

Basic Settings:

sqm1
sqm11024×622 9.02 KB

Queue Disciplines:

Queue Discipline is on cake
Queue Setup Script: Piece of Cake

Link Layer Adaption: none (default)

Admin Panel settings:

Network Acceleration: Auto

2

What could be the cause in the degradation of performance?

3

Turn hardware acceleration (WED) off, set your egress and ingress speeds at 90% of the speeds you getting provided and test

Screenshot_20241229_201217_Samsung Internet
Screenshot_20241229_201217_Samsung Internet1080×1154 118 KB

4

I played around with this setting, and despite turning it off, I'm still getting terrible performance in streaming apps like "moonlight"

I say this because moonlight has a performance metric "frames dropped due to network connection"

I'm seeing numbers as high as 15%, while on my previous setup (SBG8300, combined router+modem), my numbers were never that high. This means I'm losing approximately 15% of my frames due to the network. I'm on WiFi 5ghz, and I'm close to the router, so I don't understand what is happening.

SQM numbers are 90% of download and upload speed.

5

when I hear about Arris or Compal, I'm always on my toes, maybe they improved but it is worth to look up if these modems use a so called Puma 6 chipset.

Then this would likely point to one reason for the latency.

For demonstration how it showed for me:

If i ping the first hop after the modem which i get from a tracert/traceroute cli command, often a local ip (the puma chip internet gets offloaded to), around 10-20 pings i get a huge delay variating between 200ms to 1000ms, this means that especially constant connections will be at harm so i.e udp streams, online games.

This chip has issues with processing too much packets even when they would be perfectly reasonable.

It's worth checking if you can test it with a replacement for the modem, you can use the ping command to see if this is the cause.

the second possible issue:

The flint 2 often works better with Qdisc and not with Cake within SQM, a restart is required to ensure its using Qdisc, then HW offloading needs to be disabled, maybe WED too because it will bypass alot of things even though some experienced it working with WED i suggest to not do.

Also make sure the service:
/etc/init.d/gl_qos is not running, you can use /etc/init.d/gl_qos stop && /etc/init.d/gl_qos disable, the service could have been renamed to gl_eqos use this one instead :wink:

then there is also overhead, depending what protocol the isp router uses, and especially if there are also multiple vpn tunnels involved this can also play a role you are not getting the good results you expected, almost to 1gb/s is kinda impossible unless you lower the upload this extreme low that people would call it criminal but still a tricky one :yum:

6

Thanks for the info,

I believe the modem I’m using is operating on a broadcom chip.

I’m still very new to this, where exactly would I go to

Disable the service
/etc/init.d/gl_qos
And stop/disable these services
/etc/init.d/gl_qos stop && /etc/init.d/gl_qos disable ,

7

You need ssh access, this can be done if you download something like putty.

Then just use 192.168.8.1 use root as username and as password the same as ui, then you have the command prompt where you can use these commands.

8

Make sure your cable modem is in bridge mode to avoid double nat and performance loss.

9

Try a different firmware.