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Chorgey's avatar
Chorgey
Aspirant
May 18, 2020
Solved

Slow speed with RAX 80 on Wifi

I have a 300Mbps speed package with Comcast. When I plug the desktop directly into the CM1150V, I get download speeds of 325.9 Mbps, Upload is 8.7 and 16ms for ping.   When I connect the desktop to...
  • Chorgey's avatar
    Chorgey
    May 20, 2020

    I just wanted to update on the situation. I needed a BIOS update and after downloading/installing, I am getting the speeds that I should be getting.

plemans's avatar
plemans
Guru - Experienced User
May 19, 2020

a couple things you can try.

1. factory reset and manually reinstall the router. The rax devices are pretty new and after firmware upgrades, respond very favorably to resetting and reinstalling. 

2. Make sure if you reset/reinstall, leave access control, parental controls, traffic monitoring, qos disabled. They're not recommended >250mbps. 

3. Check your cables. it wouldn't be the first time a cable caused an issue

4. Try a different pc. Like the cables it wouldn't be the first time a pc/laptop was having issues with its wired port

5. try enabling ipv6. 

Chorgey's avatar
Chorgey
Aspirant
May 20, 2020

I just wanted to update on the situation. I needed a BIOS update and after downloading/installing, I am getting the speeds that I should be getting.

  • idlacrosseplaye's avatar
    idlacrosseplaye
    Tutor
    May 20, 2020

    Mine is slow too...

     

    You needed a BIOS update? Do you mean firmware for the router, an iOS update, or something elsewhere? What firmware are you running? I am on V1.0.2.76_1.0.35

     

    Can you also let me know:

    • what channel you selected? 
    • Do you have AX on or off?
    • Do you use QoS?
    • did you enable IPv6?
    • are you in 5GHz 4800Mbps, 2400Mbps, or 1200Mbps mode?

     

    Thanks!

    Rob

    • Chorgey's avatar
      Chorgey
      Aspirant
      May 20, 2020

      You needed a BIOS update?

      Yes

       

      Do you mean firmware for the router, an iOS update, or something elsewhere?

      I have a Dell Desktop, after going to their website, I ran a system check and it shown that my BIOS was out of date, I downloaded and installed it.

       

      What firmware are you running? I am on V1.0.2.76_1.0.35

      I am also on Firmware Version V1.0.2.76_1.0.35

       

      Can you also let me know:

      • what channel you selected?  On 2.4Ghz, I am on Channel 11 and on 5G I am on Channel 161
      • Do you have AX on or off?  ON
      • Do you use QoS?  OFF
      • did you enable IPv6?  NO
      • are you in 5GHz 4800Mbps, 2400Mbps, or 1200Mbps mode?  2400Mbps

      also, in Advanced>Wireless Settings for both 2.4 and 5G, I have...

      Fragmentation Length 2300

      CTS/RTS Threshold 2301

       

      and in ADVANCED > Setup > WAN Setup...

      In the MTU Size field, I entered a value of 1472

      as suggested by support.

       

      Don't forget to Power Cycle..

      >> remove the router from the main power supply.
      >>remove the modem from the main power supply.
      >>wait for 2 min
      >> power ON your modem.
      >>once the modem is stable then power ON your router.

       

      Hope it helps... this was driving me up a wall for a little over a week.

      • idlacrosseplaye's avatar
        idlacrosseplaye
        Tutor
        May 20, 2020

        Those settings put me to 233Mbps... :(