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Gandos123's avatar
Gandos123
New Contributor
5 years ago

Network congestion on Cox (How to fix your problems)

So for those of you having issues, it looks like tons of others have been having the same problems.  Most of the posts on these forums are what looks to be the result of a similar issue.  I can't speak for all of them but I'm willing to bet the answer you're looking for is probably in this post.

Problem: You test your internet speed and it looks reasonable but your internet feels like garbage when skyping/gaming/etc..

Investigating your problem:

You can do this through the command prompt by typing in "tracert www.google.com"  This command will send out packets and request return packets from each node along the way.  The problem with this is that it only sends out one instance of packets and returns.  So you really only get a snapshot of what's happening.  Everything will probably look good and Cox will also claim it's fine. While taking a picture is ok for an instance, what you really need is a series of pictures to see the problem.  The easiest way to investigate your problem is to download Pingplotter or some other tool that allows you to send packets out and request them back from the nodes.  Pingplotter essentially trace routes over and over again until you tell it to stop and graphs the results.

Pingplotter provides a movie of what's happening at each specific node along the way to create a good picture of whats happening.  Some of these nodes are owned by Cox, others may be owned by Google or networking companies etc..

I've provided screenshots of what's happening below on my network.  Each node has a graph associated with it to show over time what's happening.  Below, this shows my network is taking 9 hops to get to www.google.com.  Hops 2 and 3 are sketchy as they are highlighted in the yellow 2 and 3.  The remaining hops look reasonable and fall within that green range.  Also note, there is 2 graphs on the bottom.  The top graph red line is jitter.  The bottom graph is a graph of the latency.

When you dig into hops 2 and 3 you get a different story. Hop 2 is usually the node outside your house.  It's owned and maintained by Cox. My hop 2 is where the problems begin.  You can see major 50ms-120ms of jitter on the small upper graph. 35ms jitter is marked as the dash line for a max reasonable amount. Cox is well beyond reasonable. 

Digging into Hop 3, you can see a similar problem carried over from hop 2. Hop 3 looks pretty much the same as hop 2.  Hop 3 is also owned by Cox and it's probably an area where data is sent to a more centralized location to be sent out.

One thing to notice is that when the jitter is high on the top graph, you see major spiking in latency on the bottom graph.

What is jitter???  Jitter is the variation in the time between data packets arriving, caused by network congestion, or route changes.

So the cause of my problem is pretty much network congestion at nodes 2 and 3.  I think it's mainly at node 2 and it's being carried over to node 3.

For those of you having issues, i would suggest checking your internet this way.  If your having the same problems, I would contact the FCC and/or renegotiate your internet with Cox.  This problem will never get fixed until Cox decides to upgrade the nodes outside your house.  It could be months or even years until these problems are fixed.  They may never fix them if enough people don't complain.

I called in multiple times.  I upgraded my internet to from 50mb/s to 500mb/s and the problem is so bad the upgrade was useless.

  • @Gandos123, Hop 2 is typically at the home location. Since you are having this type of latency, we may need to send out a tech to see what is going on. Please send us an email with your full name and address to cox.help@cox.com so we can look further into this issue for you. -Allan, Cox Support Forums Moderator.
    • Gandos123's avatar
      Gandos123
      New Contributor

      A Tech is coming out on Monday.  Although, it took me around 5 phone calls with customer techs before one actually confirmed my problem.  It's hop 2 for sure which is outside my house.  It may even be hop 3 as well but I'm planning to run diagnostics on this again once they fix hop 2.

      • Allan's avatar
        Allan
        Moderator
        @Gandos123, Ok. Please let us know if you continue to experience issues with the service after the tech visit. -Allan, Cox Support Forums Moderator.
  • marvin1014's avatar
    marvin1014
    New Contributor II

    I also have this issue, I have been having terrible packet loss for months now and its getting to the point where I can't even play online video games or do call conferences for work. This is just straight up unacceptable for the amount of money we are paying.I have also been using pingplotter and am getting huge packet loss just like the original poster. 

    I got a new modem, upgraded my service and nothing is helping this issue as well. Please cox get your sh*t together. Its starting to affect my job. 

    • Gandos123's avatar
      Gandos123
      New Contributor

      Packet loss will usually indicate a different problem.  Is your pingplotter showing a lot of red bars?  

      • marvin1014's avatar
        marvin1014
        New Contributor II

        Yeah all i see is red bars on my ping plotter

    • Allan's avatar
      Allan
      Moderator
      @Marvin1014, Please post your pingplotter results so we can see what is going on. Alternatively, you can send the results to cox.help@cox.com. -Allan, Cox Support Forums Moderator.
      • marvin1014's avatar
        marvin1014
        New Contributor II

        I have added my Ping Plotter here. As you can see there is a good  amount of packet loss happening from hops 2,3,4

  • calcal23's avatar
    calcal23
    New Contributor

    @Gandos123,

    Thank you so much for the helpful tool.  I'm experiencing a few drop outs during business hours and full loss of service overnights.  I'm going to let this run for 24 hours and send it to Cox.  I think they replaced the node in my building (Jan 2020) as I was the first person to obtain Gigablast service in my building.  Until then the maximum speed was 300 Mb/s.  Anyways, This type of information provides empirical data to Cox, so that they can see how network performance is impacting an end user.  I can only hope that more of us do this to maximize our service experiences.