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dchadd's avatar
New Contributor III

Intermittent ping fluctuation and packet loss LAS VEGAS


For the past month or two I've been experiencing episodes of high ping and sometimes packet loss. They happen every 3-10 mins or so. During this time gaming is very unstable. I believe my modem signal levels are good. Cabling is from 2013 (new construction). I only have internet, no TV.

There are about 6 sets of errors(warnings) a day on the modem itself. They are: 

Warning (5) Dynamic Range Window violation
Warning (5) RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;

What I have tried:

  • New Modem
  • Bypassing router directly to modem
  • Removing ALL splitters
    • Cable comes from underground to the box on the side of my house
    • That cable couples using a MOCA filter (though i've tried without the filter) directly to a cable that goes to the modem
    • There is a 10DB attenuator on the cable before going into the modem
      • I've tried 3DB and 6DB pads as well.

I have a Netgear CM1000 (brand new). I believe the problem is at the node but am open to suggestions that I have control over if you have them. 

Ping Plotter:

Modem stats and errors (System Up Time: 69:09:24)

2 Replies

  • Hi Dchadd. Please send this link along with your complete address and name on the account to and we will be happy to check into this further. Thanks, Lisa - Cox Support Forums Moderator