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TheBatman's avatar
TheBatman
Aspirant
Aug 03, 2018
Solved

R7000 not doing gigabit ethernet speeds

I have just upgraded to Comcast Gigabit Internet.  It's coming in to a Surfboard SB8200 modem.  At the modem, I get correct speed.  From the router, notsomuch.  I have done factory resets, I have all Cat-6 cabling (and I've swapped it out for different cables...), there is NO QoS, parental controls, etc., enabled, and no custom settings.  I have rolled the firmware back to an unsafe version, and have also updated it to the current (as of July 12ths release) firmware.

 

I peak at around 495 Mbps, and it settles out to avg around 390 Mbps.  I have tested this on a wired dell desktop with a gig NIC, and also 2 dell laptops - each more than capable of gig connections. 

 

Everything I see points to the router - which SHOULD be gig capable...yet time and time again, testing at DSLreports.com, I'm not up to snuff.

 

I'd hate to have to think I need to replace it - it's not that old and it wasn't cheap.  I've looked through the other threads that I could find, and none of those 'solutions' has helped...

  • I think I have it figured out...as I was *not* getting speed right out of the modem.  I replaced the nighthawk with a Linksys router - exact same results - so it isn't the router at all.  I had the Comcast techs out for 2 1/2 hr...of course, they connected one of their modems....GIG SPEED!!!  I don't want one of their modems...I want mine to work, as it is supposed to be compatible.  They kept pointing back to my modem...  As it turns out, I'm getting 32 downstream channels bonded/locked...but only 4 upstream (and there should be 8.  Comcast, thus far, has been unable to provision the modem correctly...so it's on them.

     

    Thanks for all of the suggestions, etc., and i'm hoping Comcast can get their stuff together (personally, I think they owe me a rebate for the months I haven't been able to get the speed I should have...).

22 Replies

    • TheBatman's avatar
      TheBatman
      Aspirant

      I don't have anything enabled...that's what irritates me.  There's basically nothing more to shut off.  I've read that once the 1.0.9.x firmware was released, it had issues with slowness, and that every subsequent release has failed to fix it, so some were going back to old, outdated firmware.  Got the speed up, but left them vulnerable.  I even tried THAT and no luck...so i'm back to current firmware.

       

      Guess I could try flashing to DD-WRT or some other brand of firmware and see if that helps...

      • IrvSp's avatar
        IrvSp
        Master

        I recall, but could be wrong, someone had a similar problem and solved it a very unusual way.

         

        Look at the QoS tab. That is on the ADVANCED, SETUP tab in a browser running Genie and logged into the router.

         

        In the middle is a SPEED TEST. Run it, it should find your speed just fine. That was the 'fix' I recall? If there is NO value there for speed or it is low like you are getting you could have found the cause for low speed. Some have claimed even with QoS off that 'rules'.

         

        Hope this helps.... and if it does show a low speed after test, well, I don't know  what to tell you.

  • I know this isn't any help but I've had this exact same issue since I upgraded to Gigabit service a year ago. I get 980mbps down 950mbps up off the modem. Plug in the router, run test, 390 down 270 up. As with you, every possible thing that can be disabled is. I've tried everything possible, changed cables, dd-wrt, old firmware and my speeds never improve.