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Forum Discussion

EQJunky's avatar
EQJunky
Guide
Oct 24, 2019

High bufferbloat reading on download

With QOS enabled my bufferbloat reading on dsl reports is an F with massive ping spikes into the red. I installed the latest firmware. Speedtest on the router is measuring my download speed at 180 down and I have a gig speed download connection. The upload speed seems accurate and the bufferbloat reading on upload is more stable. With QOS disabled the dsl reports bufferbloat score is still a D or F with high ping spikes. I returned my XR500 and got this router but it’s not any better. It’s actually worse. Any suggestions?

6 Replies

  • plemans's avatar
    plemans
    Guru - Experienced User
    Oct 24, 2019

    I'd be looking at my modem if you're tried changing routers and still getting the same issue.

    1. What modem is it?

    2. do you have a picture of your modems connections page?

    3. If you directly connect to the modem and run the bufferbloat test, what results do you get?

    • EQJunky's avatar
      EQJunky
      Guide
      Oct 24, 2019
      The modem is a netgear cm1000. I just bought it and I wasn’t having this problem with my old router. If I limit the bandwidth in my s8000 switch to 512 down and 32 up my dsl reports bufferbloat scores go to A+ As soon as I turn on any form of QOS on the router my scores go back to F. With the switch completely disconnected my download bufferbloat scores are F.
      • plemans's avatar
        plemans
        Guru - Experienced User
        Oct 24, 2019

        So a couple tests to try.

        CM1000 alone:

        CM1000----R8000:

        CM1000---R8000---S8000:

         

        Are you using qos of both the router and the switch? limit it to a single device controlling qos.

        Any other monitors being used like traffic monitoring, parental controls, disney circle?