CODA-4582 - Open Issues for Investigation

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I Plan to Stick Around
Posts: 12

Re: CODA-4582 - Open Issues for Investigation

Slow upload on gigabit + packet loss

 

For a few days I've had slow internet. Had a tech come out and he noticed an amplifier outside which he said wasnt needed. My internet download jumped up from 300mbps to 800mbps ish which is sufficient for me, but my upload has remained below 5mbps. It's sitting around 2mbps to 4.5mbps.

 

I'm also recieving 2-5% packet loss. This happens at all hours.

 

I'm connected directly to my modem (in bridge mode also).

 

Here's my line stats

 

Downstream Overview

Port ID Frequency (MHz) Modulation Signal strength (dBmV) Channel ID Signal noise ratio (dB)
1 621000000 256QAM 0.100 12 38.605
2 561000000 256QAM -0.400 2 38.605
3 567000000 256QAM -0.800 3 38.983
4 573000000 256QAM -0.800 4 38.983
5 579000000 256QAM -1.400 5 38.605
6 585000000 256QAM -0.400 6 38.983
7 591000000 256QAM -0.300 7 38.983
8 597000000 256QAM -0.700 8 38.983
9 603000000 256QAM -0.700 9 38.983
10 609000000 256QAM -0.700 10 38.983
11 615000000 256QAM -0.200 11 38.605
12 555000000 256QAM 0.000 1 38.983
13 633000000 256QAM 0.400 13 38.983
14 639000000 256QAM 1.000 14 40.366
15 645000000 256QAM 1.100 15 38.983
16 651000000 256QAM 0.900 16 38.983
17 657000000 256QAM 0.700 17 38.605
18 663000000 256QAM 0.900 18 38.983
19 669000000 256QAM 0.800 19 38.983
20 675000000 256QAM 1.000 20 38.983
21 681000000 256QAM 0.600 21 38.983
22 687000000 256QAM 0.800 22 38.983
23 693000000 256QAM 0.200 23 38.983
24 699000000 256QAM 0.200 24 38.983
25 705000000 256QAM 0.400 25 38.983
26 711000000 256QAM -0.500 26 38.605
27 717000000 256QAM 1.000 27 38.605
28 723000000 256QAM 0.300 28 38.605
29 825000000 256QAM -4.600 29 36.610
30 831000000 256QAM -5.200 30 36.610
31 837000000 256QAM -5.300 31 36.610
32 843000000 256QAM -6.200 32 35.780



OFDM Downstream Overview
Receiver FFT type Subcarr 0 Frequency(MHz) PLC locked NCP locked MDC1 locked PLC power(dBmv)
0 NA NA NO NO NO NA
1 4K 275600000 YES YES YES 0.200001
Upstream Overview
Port ID Frequency (MHz) Modulation Signal strength (dBmV) Channel ID Bandwidth
1 23700000 ATDMA - 16QAM 33.250 2 6400000
2 38596000 ATDMA - 16QAM 37.000 3 3200000
3 30596000 ATDMA - 16QAM 34.250 1 6400000
OFDM/OFDMA Overview
Channel Index State lin Digital Att Digital Att BW (sc's*fft) Report Power Report Power1_6 FFT Size
0 DISABLED 0.5000 0.0000 0.0000 -inf -1.0000 4K
1 DISABLED 0.5000 0.0000 0.0000 -inf -1.0000 4K

 

 

Below is my WinMTR stats

 

|------------------------------------------------------------------------------------------|
| WinMTR statistics |
| Host - % | Sent | Recv | Best | Avrg | Wrst | Last |
|------------------------------------------------|------|------|------|------|------|------|
| xxxxxxxx - 2 | 688 | 678 | 5 | 29 | 1995 | 14 |
| 67.231.222.221 - 2 | 685 | 675 | 7 | 36 | 4173 | 29 |
| 69.63.248.185 - 1 | 705 | 700 | 5 | 36 | 4176 | 20 |
| 209.148.230.14 - 2 | 681 | 670 | 8 | 35 | 4670 | 12 |
| 72.14.222.87 - 3 | 669 | 655 | 6 | 34 | 4172 | 11 |
| 216.239.47.114 - 2 | 693 | 685 | 4 | 39 | 4673 | 28 |
| 72.14.239.19 - 2 | 685 | 675 | 6 | 33 | 4173 | 22 |
| yyz08s09-in-f99.1e100.net - 2 | 681 | 670 | 7 | 35 | 4173 | 14 |
|________________________________________________|______|______|______|______|______|______|
WinMTR v0.92 GPL V2 by Appnor MSP - Fully Managed Hosting & Cloud Provider

 

As you can see google.ca is having a 2% packet loss here.

 

I'm not exactly sure what is an appropriate signel strength etc, and am not able to interpret that. I was wondering if anyone in here might know if those stats look like it could be a problem. The technician left and showed me how it passed all 3 tests on his computer, and previously it failed 2 of them when i called the night before.

 

Im also curious if anyone has encoutered this and figured out a way to resolve it. Should i just call Rogers once again and hope they do something?

 

Also, incase anyone asks, i have the new white modems with the double black dot at the back.

 

Hardware A1

Software 2.0.10.26T2

Resident Expert
Resident Expert
Posts: 1,083

Re: CODA-4582 - Open Issues for Investigation

@Turntables there is something up with your signals. they're great up to channel 28 then take a sharp drop. I would call Rogers when the speeds are slow and ask them to check your signal and your neighbours.

 



I Plan to Stick Around
Posts: 26

Re: CODA-4582 - Open Issues for Investigation

It looks like .27 came today for me, but something odd has happened. I seem to be back on a 100 Mbps profile and not the gigabit one. Rogers speed test is topping out around 100 on the download and at 40 and change on the upload.

 

Has anyone else experienced it?

 

I sent @RogersDave a PM to see if he could help.

 

Did I miss something along the line in this thread?

 

I've rebooted the modem multiple times to no avail.

 

Thanks for any ideas!

I've Been Here Awhile
Posts: 2

Re: CODA-4582 - Open Issues for Investigation

The new firmware update - is it affecting chromecast - not working all of a sudden
I Plan to Stick Around
Posts: 26

Re: CODA-4582 - Open Issues for Investigation

I've got the same issue here:

 

Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDSignal noise ratio (dB)
1657000000256QAM0.7001734.346
2561000000256QAM-1.400234.626
3567000000256QAM-1.900334.346
4573000000256QAM-2.700434.346
5579000000256QAM-2.900534.484
6585000000256QAM-2.500634.484
7591000000256QAM-2.000734.346
8597000000256QAM-1.900834.484
9603000000256QAM-1.300934.484
10609000000256QAM-0.8001034.484
11615000000256QAM-0.5001134.484
12621000000256QAM0.1001234.926
13633000000256QAM0.7001334.346
14639000000256QAM0.7001434.346
15645000000256QAM0.8001534.346
16651000000256QAM0.7001634.346
17555000000256QAM-1.300135.084
18663000000256QAM1.2001834.484
19669000000256QAM1.2001934.484
20675000000256QAM0.9002034.484
21681000000256QAM0.4002133.957
22687000000256QAM0.0002233.957
23693000000256QAM-0.3002333.834
24699000000256QAM-0.4002433.487
25705000000256QAM-0.6002533.377
26711000000256QAM-1.0002633.063
27717000000256QAM-1.1002732.963
28723000000256QAM-1.6002832.585
29825000000256QAM-3.8002929.759
30831000000256QAM-3.6003029.574
31837000000256QAM-3.5003129.441
32843000000256QAM-3.7003229.441
OFDM Downstream Overview
ReceiverFFT typeSubcarr 0 Frequency(MHz)PLC lockedNCP lockedMDC1 lockedPLC power(dBmv)
0NANANONONONA
14K290600000YESYESYES-1.099998
Upstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDBandwidth
130596000ATDMA - 64QAM37.75016400000
238595824ATDMA - 64QAM41.00033200000
323700000ATDMA - 64QAM36.50026400000
I Plan to Stick Around
Posts: 154

Re: CODA-4582 - Open Issues for Investigation

@lupinglade your SNR (signal to noise ratio) is terrible. Ideally is 38-40, you have 33-34 then a sharp drop to 29 near the high channels (your signal also drops there too). There might be a cabling problem for you. Can you try to connect your modem directly to the incoming line in your residence and check to see if that's better?  Ensure that there is no booster in the line.

I Plan to Stick Around
Posts: 26

Re: CODA-4582 - Open Issues for Investigation

@Telek Thanks for your reply. The cable goes right from the rogers box on the side of the house to the cable modem, the only thing that is attached before the modem is the -5 attenuator. Do I need to contact rogers and request that they correct this on the burried line?

Resident Expert
Resident Expert
Posts: 6,229

Re: CODA-4582 - Open Issues for Investigation

@lupinglade call tech support and ask the CSR to run a signal check on your modem.  It might pass, even with lower than normal signal to noise ratios on the DOCSIS 3.0 channels.  The question is, what is the DOCSIS 3.1 power level?  The data that is presented on the modem's user interface is not correct, but, the CSR can apparently see that.  Ask him or her to check the DOCSIS 3.1 power level to determine if it is sufficient.  I have to assume that there is also a corresponding signal to noise ratio, so you can ask about that as well.  The important figures at the moment are the ones for DOCSIS 3.1, as that transmit mode is what your modem is using for the downstream data.  The DOCSIS 3.0 data could point to a potential noise problem that might also affect the DOCSIS 3.1 sub-carriers, so, power level and the signal to noise ratio are the numbers to concentrate on at the moment.  If they are low, the follow-on discussion should be aimed at getting a tech out to your home to check the external cabling and connectors.



I'm a Reliable Contributor
Posts: 581

Re: CODA-4582 - Open Issues for Investigation

@lupinglade You can try removing the -5 attenuator to see if it'll do anything to increase the SNR levels, but I don't think it'll do much. If that's the case, then call the Rogers Internet support line and ask them to check your SNR levels. 

 

With the low SNR levels they should be sending a tech out to your place to try to increase the SNR by replacing any faulty cables. 

I Plan to Stick Around
Posts: 154

Re: CODA-4582 - Open Issues for Investigation

@lupinglade why is there a -5 attenuator on the line? That's very strange. All of your signal levels are either in the negative, or only just barely positive. There's no need for attenuation.  As someone else suggested, call up Rogers and get them to look at your signal and SNR levels, hopefully they'll send a tech to do a full diagnosis onsite.