VERY low upload speeds for past few days
We have had very low upload speeds and intermittent stalling of downloads over the past few days (7/19 - 7/21-23) in the Hampton Roads. VA area (23320 zip). Speed test results have varied from 40-22...
Forum Discussion
Maybe I read your post wrong. Only glanced through it.
What is an NIU?
NIU is Network Interface Unit. It was for Cox's older circuit switch technology before they changed to eMTA for VOIP. See post here for more info.
a smaller Cox cable entry point box
Is that where your demarc is with your splitters to split the signal to other outlets in your house? Also, any problems with TV service like issues with OnDemand?
Overall I would suggest bypassing the router first and see if your upload speed returns. If not, try bypassing the splitters in your house with a coupler to see if that corrects the issue. If not, you need a technician.
Okay, bypassed the router and got 215/0.40 speed, so better download and no upload improvement. Oddly, downstream power level is now reading +1 (previously +7) at the modem info page (192.168.100.1). The modem info page log tab shows a series of "No Ranging Response received" messages. In the status tab of the modem info page it actually says the cable modem status is "offline" even though it is connected and loads web pages. Also of note is that any access to the modem info page stalls for about 20 seconds (I remember the info popping right up in the past).
Another speed test now shows 188/0.18 down/up speeds.
The cable service enters the house at the Cox box on the side of the house and goes up to the attic. In the attic there is a new +15 db single output amp (added in March due to low signal levels) and after the amp are splitters feeding the internet, TV, and phone devices in the home.
Ick. Amps and splitters. I find it best to have a two way splitter at the demarc, one going to the modem and one going to the amp and then from amp to TV boxes. Modems don't like amps I find. Can you post your signal levels. I want to see if you actually need the amp.
Over the years I have had amps and no amps. Prior to March I had no amp for several years. Cable enters attic and there is a two way splitter, one leg feeding cable modem and the other leg feeding other splitter for TVs, phone etc. I was getting low cable modem signal (about -14 db) plus pixelization at TV and some poor phone audio so the present amp (+15) was put in before all the splits. It is remote powered from an adapter in the house (many years ago I had an amp in the attic and the power brick died due to the heat). Split layout is still the same... two way then another multi-way.
I Can't figure out how to post screenshot of all the levels (insert image/video/file doesn't seem to work for me or I am doing it wrong.) Downstream power is +1 for five channels and 0 for the other three. S/N is 35 or 36 for all channels. Upstream power is 40-43 across the four channels.
I Can't figure out how to post screenshot of all the levels
The easiest way is to upload a photo to Imgur and post the link. Basically you have to press the "Click to Join" button on the bottom of the main Internet home page to get the file upload option. See here for more info.
Just to be clear, the amp is on the multiport splitter that feeds the TV's right? Can you bypass the first 2way splitter with a coupler to see if that is causing any issues? Trying to isolate all internal wiring before I suggest contacting Cox for a technician.
Last, have you signed into Cox.com to see if there are any outages in your area?
