CODA-4582 - Open Issues for Investigation

Need Help?

That's what we're here for! The goal of the Rogers Community is to help you find answers on everything Rogers. Can't find what you're looking for? Just ask!
cancel
Showing results for 
Search instead for 
Did you mean: 
Reply
I Plan to Stick Around
Posts: 33

Re: CODA-4582 - Open Issues for Investigation

Been having issues where my connetion is really unstable over the weekend only. can only explain these pings to the modem?33.png

Highlighted
I Plan to Stick Around
Posts: 61

Re: CODA-4582 - Open Issues for Investigation

I fought the good fight in a valiant attempt to keep my CGN3552 modem when extending my promos, but Rogers was having none of that and forced me to switch to the Coda - they might as well have said "we are going to force you to exchange the rock solid 3552 which wasn't giving you a lick of trouble, for the new and improved Coda which will randomly drop its connection multiple times during the day and make your life miserable. Why? Because we can!"

 

I told him over and over again that there was zero reason to give up a perfectly working modem for the White Tower of Doom - but noooo, it's better, he said!

 

Well, it's NOT better.

 

I was on the firmware trial for the 3552 - not sure if that carried over to the Coda? Right now I have 34T6.

I'm using bridge mode, if that makes any difference. Sometimes, but not always, when the connection is dropped, the @ sign flashes.

 

What can I do? Other than hold my breath and turn blue in the face in an attempt to force them to give me back the 3552?

I'm Here A Lot
Posts: 5

Re: CODA-4582 - Open Issues for Investigation


@HughR wrote:

@JGCLGHRN wrote:

They also mentioned that the modem could only handle 8 simultaneous internet connections (all bands combined)


That's outrageous.  Is this documented?  Perhaps they just made it up.


I have not been able to find this documented anywhere. The representative also suggested if I needed many devices to have access to the internet at the same time I put the CODA in bridge mode and buy a better 3rd party router. I always thought the CODA was supposed to be top of the line.

I'm Here A Lot
Posts: 5

Re: CODA-4582 - Open Issues for Investigation


@headhoncho wrote:

I was on the firmware trial for the 3552 - not sure if that carried over to the Coda? Right now I have 34T6.

@I'm using bridge mode, if that makes any difference. Sometimes, but not always, when the connection is dropped, the @ sign flashes.


I have the same firmware version and I've experienced this behaviour as well along with frequent modem self reboots. I all of a sudden loose a 2G or 5G connection, go to look at the modem and all the lights are as they should be. On one occasion Rogers Tech. support changed the name of my 2G network (supposedly all they did) and then my devices started connecting again without rebooting the modem. Usually I have to reboot my modem. 

I also had a signal level problem and a tech. came out and reconfigured my outside box connections to remove a splitter and put in a new amplifier. Since then the self reboots have stopped and the mystery disconnects have all but disappeared. 

I Plan to Stick Around
Posts: 43

Re: CODA-4582 - Open Issues for Investigation

Ive had a CODA4562 for many months running 2.0.10.35T1 and have been generally satisfied w speed etc....but recently I noticed that my new wifi smart thermo keeps says that I lose then reconnect wifi/internet several times a day. My spotify acct now occasionally stutters as if the connection is dropping/reconnecting, my internet connections seem to hang for a few moments then continue, and there are all sorts of errors in the DICSIS Logs per below. I have laptop, printer, 2 ipads, smartphone, chromecast, and a couple of alexa smart devices on the router. any insights???

 

1606/04/2018 10:53:4490000000warningMIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=xxx;CMTS-MAC=xxx;CM-QOS=1.1;CM-VER=3.1;
1706/04/2018 10:54:3368000403errorToD request sent- No Response received;CM-MAC=xxx;CMTS-MAC=xxx;CM-QOS=1.1;CM-VER=3.1;
1806/04/2018 10:59:2482000400criticalReceived Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=xxx;CMTS-MAC=xxx;CM-QOS=1.1;CM-VER=3.1;
1906/04/2018 10:59:5390000000warningMIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=xxx;CMTS-MAC=xxx;CM-QOS=1.1;CM-VER=3.1;
2006/07/2018 19:50:3482000200criticalNo Ranging Response received - T3 time-out;CM-MAC=xxx;CMTS-MAC=xxx;CM-QOS=1.1;CM-VER=3.1;
Resident Expert
Resident Expert
Posts: 5,997

Re: CODA-4582 - Open Issues for Investigation

@stoneball the Broadcast Maintenance and No Ranging Response alerts are listed as critical as the modem has not received a maintance period from the Cable Modem Termination System (CMTS) which includes Sync timing, but, in reality, the modem logs the alert and carries on, requesting another Maintenance period a short time later.  So, nothing to be really concerned with unless they accompany other alerts which indicate a more serious problem such as an MDD loss or timeout or a SYNC loss.  Here's a link for the MIMO alert:

 

https://www.speedguide.net/faq/what-does-the-mimo-event-mimo-log-message-mean-393

 

The MDD (Mac Domain Descriptor) contains various pieces of data for the modem to use to reestablish synchronization with the CMTS should it become necessary.  I've seen MDD loss alerts where nothing has happened, and MDD loss alerts where the modem has rebooted.  Usually there is more than one alert in that case. 

 

Just to check the signal levels on the modem, can you log into the modem, navigate to the STATUS .... DOCSIS WAN tab and copy the lower table, which contain the signal levels and signal to noise ratios.  Paste that into a post.  The copy and paste process will paste in the text contents of the table.  

 

It looks like you're using wifi for your device.  Can you have a look at the following post and then have a look at your wifi environment to see who else you're competing with.  Please change the wifi settings in the modem if necessary and reboot the modem when you're complete with the changes. 

 

http://communityforums.rogers.com/t5/Internet/slow-wifi/m-p/399949#M47222

 

Try the following.  Load Acrylic on a laptop, as indicated in the post, and then stand next to the thermostat to see what the modem signal level and signal to noise ratios look like.  Ideally the signal level would be around -35 dBmW and ideally the next modem/router signal level on the same channel and adjacent channel would be around -75 dBmW.  As you reduce the separation between your network signal level and the same and near channel signal level, you will see increasing difficulties in running your network.  So, just about the only thing to do at this point is to ensure that the wifi settings are optimized in the modem/router, the best operating channel is selected and failing that, possibly moving the modem/router.  

 

Please give this a go and let us know what you've found as you look at this issue. 



I Plan to Stick Around
Posts: 43

Re: CODA-4582 - Open Issues for Investigation

This is the info requested, I'll work on the other stuff. Thanks for the reply

Downstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDSignal noise ratio (dB)
1597000000256QAM2.100836.610
2849000000256QAM-3.900235.595
3855000000256QAM-3.400335.780
4861000000256QAM-2.500435.595
5579000000256QAM2.500536.610
6585000000256QAM2.700637.356
7591000000256QAM2.400736.387
8303000000256QAM6.200137.636
9603000000256QAM2.200936.610
10609000000256QAM2.2001036.610
11615000000256QAM2.6001136.610
12621000000256QAM2.9001236.610
13633000000256QAM2.9001336.610
14639000000256QAM3.2001436.610
15645000000256QAM3.1001536.610
16651000000256QAM3.0001636.610
17657000000256QAM2.9001736.387
18663000000256QAM2.7001836.610
19669000000256QAM2.5001936.610
20675000000256QAM2.5002037.356
21681000000256QAM2.3002137.356
22687000000256QAM1.8002236.610
23693000000256QAM2.0002336.610
24699000000256QAM1.7002437.356
25705000000256QAM1.4002536.387
26711000000256QAM1.4002636.610
27717000000256QAM1.3002737.356
28723000000256QAM0.6002836.610
29825000000256QAM-3.6002935.595
30831000000256QAM-3.6003035.780
31837000000256QAM-4.0003135.780
32843000000256QAM-3.9003235.595
OFDM Downstream Overview
ReceiverFFT typeSubcarr 0 Frequency(MHz)PLC lockedNCP lockedMDC1 lockedPLC power(dBmv)
0NANANONONONA
14K290600000YESYESYES5.300003
Upstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDBandwidth
123700000ATDMA - 64QAM27.75026400000
238596000ATDMA - 64QAM30.75033200000
330596000ATDMA - 64QAM27.75016400000
OFDM/OFDMA Overview
Channel IndexStatelin Digital AttDigital AttBW (sc's*fft)Report PowerReport Power1_6FFT Size
0DISABLED0.50000.00000.0000-inf-1.00004K
1DISABLED0.50000.00000.0000-inf-1.00004K
Resident Expert
Resident Expert
Posts: 5,997

Re: CODA-4582 - Open Issues for Investigation

@stoneball your downstream DOCSIS 3.0 signal levels aren't too bad.  They show the usual high frequency roll off but, that's not a concern at this point.  The signal to noise ratios are ok, with a slight roll off at the top end.  The upstream levels are slightly low.  Typically with this modem we see somewhere in the 30 to 32 dBmV range.  The Cable Modem Termination System (CMTS) which the modem connects to, actually controls the upstream power level, so, if the CMTS wanted a higher output level from the modem, it would simply command the modem to do so.  Having said that, it would be worth a call to tech support to ask the CSR what the signal levels and signal to noise ratios are for the upstream signals that arrive at the CMTS.  The CMTS does not feed that back to the modem, so a phone call is necessary to determine those numbers. If I remember this correctly, I believe the optimum upstream levels are 0 dBmV with a minimum 27 dB signal to noise ratio.  You can ask the CSR what the actual numbers are and whether or not their in spec.

 

The OFDM (DOCSIS 3.1) signal level may or may not be correct. That data in the OFDM block isn't displayed properly.  If you call tech support, ask the CSR to run a signal check on the modem and ask if the modem's receive power level for the OFDM channel is within spec.

 

There's nothing that jumps out as being a problem, however, as I indicated the upstream DOCSIS 3.0 levels are slightly low.  That may or may not be an issue. If the CMTS is happy, ok, it is what it is.

Fwiw your modem is using DOCSIS 3.1 on the downstream side and DOCSIS 3.0 on the upstream side, so, the upper DOCSIS 3.0 data in the table isn't much value. Interesting to look at, but, the only value of real interest is port ID #8.  The OFDM channel is probably running just below or just above that channel and both Port ID #8 and the ODFM channel power levels are high.  That should be ok at this point.

 

So, you could call tech support to:

 

1. Run a signal check
2. Confirm what the modem's OFDM (DOCSIS 3.1) receive power level actually is, and whether or not its in spec
3. Confirm what the upstream signal levels and signal to noise ratios are when they arrive at the CMTS and whether or not their in spec

 

Are you running any other Rogers services and if so, are you seeing any issues with those services?

 

Next up: looking at your wifi environment to see what networks your neighbours are running and determine if any of those networks are causing problems for your network.



I Plan to Stick Around
Posts: 43

Re: CODA-4582 - Open Issues for Investigation

hmmm i like acrylic. Strength at my laptop position is -64db, smart thermo -53db; same /adjacent ch strengths are in  the -80 to -90 db range. I changed a few wifi settings as per the link and rebooted.

I Plan to Stick Around
Posts: 8

Re: CODA-4582 - Open Issues for Investigation

My connection has been poor for months. I am subscribed to the gigabit package and for months I have been getting less than half the speed. Your phone service is useless as they try to make it sound like it is my fault. The modem is in bridge mode, with a Asus RT-AC3200 router. connections are all hard wired with Cat6. I didnt want to go through the hassle of getting this fixed like I had to 1.5 years ago where I had to visit rogers stores 5 times, swap modem 4 times, have techs visit at least 4 times, and finally office of the president. I don't have time for this, so I just accepted my less than half speed connection. But then you guys raised prices "To serve me better".... now I want my full gigabit. Last time I had to fight this we got it up to 930-ish mbit on speedtest.net. Now I score less than 400mbit.

Downstream Overview
Port ID Frequency (MHz) Modulation Signal strength (dBmV) Channel ID Signal noise ratio (dB)
1 597000000 256QAM 0.200 8 40.366
2 849000000 256QAM -1.300 2 40.366
3 855000000 256QAM -1.700 3 40.946
4 861000000 256QAM -1.800 4 40.946
5 579000000 256QAM 0.100 5 40.946
6 585000000 256QAM 0.100 6 40.366
7 591000000 256QAM 0.200 7 40.366
8 303000000 256QAM -2.000 1 38.983
9 603000000 256QAM 0.500 9 40.946
10 609000000 256QAM 0.600 10 40.366
11 615000000 256QAM 0.500 11 40.946
12 621000000 256QAM 0.700 12 40.946
13 633000000 256QAM 1.000 13 40.946
14 639000000 256QAM 1.100 14 40.946
15 645000000 256QAM 1.000 15 40.946
16 651000000 256QAM 1.000 16 40.946
17 657000000 256QAM 1.300 17 40.946
18 663000000 256QAM 1.300 18 40.946
19 669000000 256QAM 1.300 19 40.946
20 675000000 256QAM 1.700 20 40.946
21 681000000 256QAM 1.700 21 40.946
22 687000000 256QAM 1.800 22 43.377
23 693000000 256QAM 2.100 23 40.946
24 699000000 256QAM 2.200 24 40.946
25 705000000 256QAM 2.100 25 40.946
26 711000000 256QAM 1.700 26 40.946
27 717000000 256QAM 1.700 27 40.946
28 723000000 256QAM 1.100 28 40.946
29 825000000 256QAM -0.100 29 40.946
30 831000000 256QAM -0.400 30 40.366
31 837000000 256QAM -0.700 31 40.366
32 843000000 256QAM -1.000 32 40.946
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 -0.700001
Upstream Overview
Port ID Frequency (MHz) Modulation Signal strength (dBmV) Channel ID Bandwidth
1 23700000 ATDMA - 64QAM 34.500 2 6400000
2 38596000 ATDMA - 64QAM 38.250 3 3200000
3 30596000 ATDMA - 64QAM 36.250 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