VERY SLOW UPLOAD SPEEDS, download is fine.
I have been dealing with extremely slow upload speeds for a very long time, at least a year. Maybe two? I have gigablast. Download is consistently fine. Always around 900 mbps and above. Upload is sp...
Forum Discussion
I'm told by COX that there are some signal level issues with my modem and maybe some packet loss. What would be a procedure that you guys would use to look and test for something like this. Give some detail so I can start my own investigation. Also, what do I look for in any of these displays or logs? I currently don't experience any modem shutdowns or broken downloads. My only issue was associated with the Cox speedtest slowing down on the Upload side.
"Your Modem is reporting slightly higher signal levels on the US and DS modem channels." was a comment from them. How do I look at this on my PC and what do I look for. I've used Pingplotter and WinMTR to trace hops to cox.com. When I looked at the results, i saw a hop #6 having large packet loss....however, Cox tells me that there is an issue with my modem. Since I cannot post my Ping image to this forum (a few of us are having this problem), I thought I would just ask.
with ping plotter, you have to watch for packet loss in the cox hops, then look for packetloss on the very last hop. also check your upstream and downstream signals, Good Downstream power level are within -7 to +7 dBmV. Good upstream power levels are within 38-48 dBmV. if you dont know how to see that, go to 192.168.0.1 (if you are using a cox modem/router) not too sure how to do on an aftermarket router. Click "Connection" and go to "Cox Network" and scroll all the way down, and find Downstream and upstream power levels. and check if they are in those ranges.
Thanks Zurq, always some good info. My Netgear C6900 had 24 channels, download power -8.9 to -13.8. My upload had 4 with results of 48.4 to 50.4. So by your standards of +-7 and 38-48, I'm outside the ranges of being Great, maybe Fair. The Home screen shows the Cable Connection as Good. Is there a Better, Great or Excellent indicator here?
I've tighten my modem coaxial connection, including the 1 splitter, and wall, and have power restarted the modem. Does this imply my Modem is going bad, one that I purchased but on the COx list. Since I don't really have issues, other than noticing my upload speeds dropping to half the 2week ago numbers when using the COX speedtest. Other speed test give higher uploads. Also did a pingplotter to the cox site, and showed #6 with lager packet loss. But Cox said my modem had issues, and did not want to discuss the Hop issue I saw. Cox also would not share the IP address that their OCounty speed test was pointing to so that I could have run a ping or pingplotter to it instead of speedtest. WinMTR also had same #6 PLoss like pingplotter did.
by your power levels your modem seems to be running well. If you have a cox modem i'd just go to the cox store and get a new one just to rule it out. I added my own router instead of using the cox modem/router, and make sure if you do have a cox modem/router combo you must put it in bridge mode, it works best for me if you do. and Cox has been effed up for a while if I run a speed test on cox servers it gives me 5 upload it must be something on their end, also turn qos on your netgear router. it helps. and if you want to be 1000% sure it's their end if you are under warranty replace the Netgear C6900. and if you want to test ever further test the speeds and ping plotter wtih the panoramic modem/router. then build a case and escalate it to COX or the FCC make notes take screenshots, so you can show them it isn't your equipment, nor anything you are doing wrong to impact the Quality of the Service.
and if you run a speed test, open up task manager, and go to performance and click network and the send and receive speeds are your upload and download and it should show correct speeds. if it doesn't then you might have a hardware problem.
Zurq...wealth of info...now my numbers of -8.9 to -13.8 and 48.4 to 50.4 are outside the ranges you posted, but you implied my power levels are running well....really? Do you know if there are better indicators on the Netgear main panel...mine said Good. My c6900 is my modem/router purchase. I don't understand 'bridge mode', and yes, it seems like a Cox prob since it only started recently down to about 4-6 upload. Also, 'qos' I'll take a look again in forum, seem to have seen this notation.
I will also take a look at task manager...that should be fun. As I said, pingplotter to the hop#6 to cox.com from my ip definitely shows %Ploss...If you have pingplotter or WinMPR, check the hops to cox.com. Also in the Cox speed test, try to go to OC server...you may be on the other side of the country so your numbers could be anything....especially if you are getting in 5's for upload.
I did a cmd ping -n 20 cox,com and got Zero %packet loss, but pinplotter, which checked the hops did find #6 loosing 30%... Curious
Update...did a taskmanager view of performance/ethernet and then engaged the cox speed test to my OC area...task mgr gave high of 248 while speed did 220+...but the upload had taskmgr 11.2 max, and cox speed test had around 6...good tool Zurq!
I would try qos router change, modem change and make sure to take screenshots of everything, note the model numbers of modem/router present it to Cox and bug them till you get better results.
- Hi ekhawaii, the Tx and Rx levels appear to be outside of our preferred specifications, but I'm not seeing any power adjustments either or packet loss at this time. If you need any additional assistance, please feel free to reach out to us directly. We can also review the traceroutes/PingPlotters as well to determine if latency is taking place on the Cox network. -Kevin M. Cox Support Forum Moderator
