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Harlech

join:2013-01-15
El Reno, OK

[OK] Download speed issues getting worse over weeks.

Been an issue since a week or two before Christmas and has gotten worse since then. Originally it would be for an hour or two a day (while online or streaming video) where download speeds would drop to 1.5mb/s or less before shooting back up without having to do anything (No reboots or anything), then after awhile it seemed a reboot was needed to fix and now nothing helps, tried leaving modem unplugged for half a day, plugged it back in and still no improvement, download stream has been at 1.5mb/s or less for 3 consistent days now while upload is still at 3-5mb/s. Installation has been in since October, no issues up until mid December, never required a modem restart, anything. Had a tech come out in December and verify wiring and replace modem/gateway

Technical info:
Modem/Router Combo - Netgear CG3000D-RG
Cox Premier HSI (Up to 31megs with powerboost or whatever its called, normally see 20 to 25mb/s)
Signal levels while seeing low download speeds:

Downstream Bonded Channels
Lock Status Modulation Channel ID Symbol rate Frequency Power SNR DOCSIS/EuroDOCSIS locked
Locked QAM256 193 5360 Ksym/sec 837000000 Hz 4.9 dBmV 37.8 dB DOCSIS
Locked QAM256 194 5360 Ksym/sec 843000000 Hz 4.5 dBmV 37.9 dB DOCSIS
Locked QAM256 195 5360 Ksym/sec 849000000 Hz 4.3 dBmV 37.7 dB DOCSIS
Locked QAM256 196 5360 Ksym/sec 855000000 Hz 3.5 dBmV 37.5 dB DOCSIS
Locked QAM256 201 5360 Ksym/sec 861000000 Hz 4.2 dBmV 38.2 dB DOCSIS
Locked QAM256 202 5360 Ksym/sec 867000000 Hz 3.9 dBmV 38.2 dB DOCSIS
Locked QAM256 203 5360 Ksym/sec 873000000 Hz 3.7 dBmV 38.2 dB DOCSIS
Locked QAM256 204 5360 Ksym/sec 879000000 Hz 3.3 dBmV 37.9 dB DOCSIS
Upstream Bonded Channels
Lock Status Modulation Channel ID Symbol rate Frequency Power
Locked ATDMA 3 2560 Ksym/sec 31900000 Hz 38.0 dBmV
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV

Checked them yesterday and they were about the same as above. No big deviation anywhere.

Cable modem is directly into the wall with no splitters, goes through the attic straight into the ground, no splitters anywhere between me and the feed coming from cox. No other cable services, all other ties were removed when tech was here in December so it is all on one leg.

I ran four speed tests, one locally to OKC, Houston, Berkeley CA and New York City, all within an hour of each other.
OKC: Ping 17ms, Down 1.50Mb/s, Up 3.55Mb/s
Houston: Ping 27ms, Down 1.46Mb/s, Up 2.06Mb/s
Berkeley: Ping 69ms, Down 1.34Mb/s, Up 1.75Mb/s
NYC: Ping 56ms, Down 1.62Mb/s, Up 2.99Mb/s

Any insight to this? Cox support has been less than helpful.

Thanks,
Kyle


Harlech

join:2013-01-15
El Reno, OK

Speed just picked up for the first time in three days, nothing changed, no restarts or anything, in fact I was watching Netflix when it went from horribly pixelated to clear.

Signal levels:

Downstream Bonded Channels
Lock Status Modulation Channel ID Symbol rate Frequency Power SNR DOCSIS/EuroDOCSIS locked
Locked QAM256 193 5360 Ksym/sec 837000000 Hz 5.2 dBmV 38.1 dB DOCSIS
Locked QAM256 194 5360 Ksym/sec 843000000 Hz 4.9 dBmV 38.2 dB DOCSIS
Locked QAM256 195 5360 Ksym/sec 849000000 Hz 4.6 dBmV 37.9 dB DOCSIS
Locked QAM256 196 5360 Ksym/sec 855000000 Hz 3.8 dBmV 37.8 dB DOCSIS
Locked QAM256 201 5360 Ksym/sec 861000000 Hz 4.5 dBmV 38.6 dB DOCSIS
Locked QAM256 202 5360 Ksym/sec 867000000 Hz 4.3 dBmV 38.6 dB DOCSIS
Locked QAM256 203 5360 Ksym/sec 873000000 Hz 4.1 dBmV 38.5 dB DOCSIS
Locked QAM256 204 5360 Ksym/sec 879000000 Hz 3.7 dBmV 38.1 dB DOCSIS
Upstream Bonded Channels
Lock Status Modulation Channel ID Symbol rate Frequency Power
Locked ATDMA 3 2560 Ksym/sec 31900000 Hz 38.0 dBmV
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV

I also speed tested to OKC and Houston real quick to give comparison to the previous post.
OKC: Ping 17ms, Down 29.04Mb/s, Up 7.07
Houston: Ping 35ms, Down 28.10Mb/s, Up 8.31Mb/s


Harlech

join:2013-01-15
El Reno, OK

That lasted about ten minutes, speeds tanked again, nothing changed, still watching the same show on Netflix.

Levels

Downstream Bonded Channels
Lock Status Modulation Channel ID Symbol rate Frequency Power SNR DOCSIS/EuroDOCSIS locked
Locked QAM256 193 5360 Ksym/sec 837000000 Hz 5.2 dBmV 38.3 dB DOCSIS
Locked QAM256 194 5360 Ksym/sec 843000000 Hz 4.8 dBmV 38.4 dB DOCSIS
Locked QAM256 195 5360 Ksym/sec 849000000 Hz 4.5 dBmV 38.0 dB DOCSIS
Locked QAM256 196 5360 Ksym/sec 855000000 Hz 3.8 dBmV 37.7 dB DOCSIS
Locked QAM256 201 5360 Ksym/sec 861000000 Hz 4.4 dBmV 38.4 dB DOCSIS
Locked QAM256 202 5360 Ksym/sec 867000000 Hz 4.3 dBmV 38.5 dB DOCSIS
Locked QAM256 203 5360 Ksym/sec 873000000 Hz 4.1 dBmV 38.2 dB DOCSIS
Locked QAM256 204 5360 Ksym/sec 879000000 Hz 3.6 dBmV 38.0 dB DOCSIS
Upstream Bonded Channels
Lock Status Modulation Channel ID Symbol rate Frequency Power
Locked ATDMA 3 2560 Ksym/sec 31900000 Hz 38.0 dBmV
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV

Speed tests to OKC and Houston
OKC: Ping 17ms, Down .89Mb/s, Up .65Mb/s
Houston: Ping 37ms, Down 1.51Mb/s, Up 4.60Mb/s

Such an erratic problem.


Harlech

join:2013-01-15
El Reno, OK

Modem just rebooted itself.......

Downstream Bonded Channels
Lock Status Modulation Channel ID Symbol rate Frequency Power SNR DOCSIS/EuroDOCSIS locked
Locked QAM256 193 5360 Ksym/sec 837000000 Hz 5.1 dBmV 38.1 dB DOCSIS
Locked QAM256 194 5360 Ksym/sec 843000000 Hz 4.7 dBmV 38.2 dB DOCSIS
Locked QAM256 195 5360 Ksym/sec 849000000 Hz 4.5 dBmV 37.9 dB DOCSIS
Locked QAM256 196 5360 Ksym/sec 855000000 Hz 3.7 dBmV 37.9 dB DOCSIS
Locked QAM256 201 5360 Ksym/sec 861000000 Hz 4.3 dBmV 38.4 dB DOCSIS
Locked QAM256 202 5360 Ksym/sec 867000000 Hz 4.2 dBmV 38.2 dB DOCSIS
Locked QAM256 203 5360 Ksym/sec 873000000 Hz 3.9 dBmV 38.3 dB DOCSIS
Locked QAM256 204 5360 Ksym/sec 879000000 Hz 3.5 dBmV 37.8 dB DOCSIS
Upstream Bonded Channels
Lock Status Modulation Channel ID Symbol rate Frequency Power
Locked ATDMA 3 2560 Ksym/sec 31900000 Hz 38.0 dBmV
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
Unlocked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV


m8trix

join:2003-12-24
Phoenix, AZ
kudos:4

if you have a router,try bypassing for 24hrs


bchandler02

join:2011-07-08
Oklahoma City, OK
reply to Harlech

I'd also try running hardwired if you aren't already, and if you are try a different patch cable. If that doesn't work, either swap the modem yourself or schedule a tech visit.


Harlech

join:2013-01-15
El Reno, OK
reply to Harlech

Router and modem are the same unit, but I picked up a separate modem I will try this afternoon after work. Wired or wireless has no effect.


bchandler02

join:2011-07-08
Oklahoma City, OK
reply to Harlech

OK, then I'd think the modem is your next logical step.


Harlech

join:2013-01-15
El Reno, OK
reply to Harlech

Okay, got the new modem setup on the system and running now, no router involved, seeing better speeds than I have ever seen so far. Will keep everyone posted moving forward and how it goes after I put the new router on tonight and if the problem persists.

Thanks everyone.


Harlech

join:2013-01-15
El Reno, OK
reply to Harlech

Just got home, router and modem have been hooked up since lunch, jumped on and no issues so far.

Guessing that netgear two-in-one they are giving out is a hunk of junk. Did I pay for that thing? Should I demand a refund for it since I had to spend my own cash to get connected to a service I already pay for?



CoxTech1
VIP
join:2002-04-25
Chesapeake, VA
kudos:76

If you got it from us definitely return it to the store, they'll let you know what your options are.


Harlech

join:2013-01-15
El Reno, OK

Thanks, a tech came out and replaced it back at the end of December and it acted like it might of fixed it. Last night was the first time in three weeks I was able to watch Netflix without interruption.