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CODA-4582 - Open Issues for Investigation

RogersDave
Retired Support
Retired Support

*** This post was last edited May 2, 2017 ***

 

Good morning Community,

 

As I mentioned in a post two days ago, we have received the next firmware 2.0.10.20 from Hitron. We are currently running initial testing on this version and will push it out to participants in the firmware trial program as soon as it passes initial testing.

 

However, while running these tests, we discovered abnormal behavior with ICMP and are awaiting feedback from Hitron today to asses how this will be addressed. As soon as I this is confirmed, I’ll update the change log with the correct version information and start pushing it out.

 

In parallel, we are still working on the following high priority items. In some cases below, I requested affected customers to reach out to me via private message. If you do so, please include your modem MAC address in the subject line (even if we exchange messages daily) as there are a lot of you reaching out to me daily 🙂

 

UDP Packet Loss

The investigation for what has been reported as UDP packet loss is still ongoing. We have deployed a probe at one fellow forum member on both a CODA-4582 and a CGNM-3552 to collect additional data. We are actively working with Hitron and Intel on the results observed.

 

Based on what we know so far, in most instances UDP packet loss is coupled with higher uplink usage in the area. Although the impact is noticeable in specific logs (League of Legends), the root cause for the perceivable impact (while playing) is likely related to bufferbloat (see next issue).

 

 

Bufferbloat

When comparing the performance of a CODA-4582 to a CGNM-3552 in the same network conditions, the CODA-4582 consistently reports higher bufferbloat when tested on DSLReports.

 

Update April 12: The solution for this problem will come in two folds. It will require a change in software which will possibly be included in 2.0.10.27 but more likely in 2.0.10.28 and a change in network configuration.

 

The network configuration change is not compatible with the current firmware so this change will only come after a vast majority of the modems are running the new code. We are however looking at a way to make the change only for specific modems to support testing in the community.

 

Update April 22: This problem seems resolved in firmware 2.0.10.27

 

 

5 GHz WiFi Low range for channels 36 to 48

Lower WiFi channels on the modem have a much smaller range. This is due in part to the limit imposed by Industry Canada to maximum transmit power.

 

Furthermore, the current automatic channel selection (auto mode) tends to select the lower channels when in similar load conditions.

 

Workaround: manually select higher channels (149-153-157-161)

 

Update April 22: The channel selection algorithm has been improved in firmware 2.0.10.27

 

 

Loss of OFDM Channel Lock

Under some RF conditions, the modem fails to lock properly on the OFDM channel. This typically result in variable performance.

 

Update April 12: This problem is resolved in 2.0.10.26T2

 

 

List of connected device does not get fully populated

This is a known issue that has been tracked since firmware 2.0.10.13. We are making improvements at every firmware but it is not a perfect system.

 

The situation is worst after a reboot or firmware upgrade as the list gets reset and must be repopulated as devices renew their DHCP lease.

 

 

NAT Loopback not working for wired clients

When setting up port forwarding to an internal server, it is possible for a client on WiFi to reach the server using the external IP/port. If the client is on a wired interface, it doesn't work.

 

Update April 12: This problem is resolved in 2.0.10.26T2 (not confirmed)

 

 

LAN Counters not working

Some customers reported that LAN counters (especially in bridge mode) are reporting inaccurate values.

 

This problem has been reported to Hitron for investigation.

 

 

Unexpected modem reboot

Some customers reported their modem reboots unexpectedly. We have also seen this behavior in our lab.

 

Update April 12: This problem is resolved in 2.0.10.26T2

 

 

Missing SC-QAM Channels

After a reboot, some modems are missing SC-QAM channels. A fix has been implemented in 2.0.10.26T2 to address this behavior but it has not corrected all scenarios.

 

Investigation continues with Hitron.

 

 

WiFi Survey

The WiFi Survey functionality in firmware 2.0.10.26T2 (and possibly before) reports incorrect SSID names.

 

 

Guest Network

When connecting to the Guest Network, an error message is displayed "only allow DHCP client to use this wireless".  This has been reported in firmware 2.0.10.26T2.

 

Update April 22: This issue has been resolved in firmware 2.0.10.27

Update May 2: It seems this issue is not fully resolved and still experienced by some users


 

Future Planned Improvements

The following are items that we are working on in parallel of the above.

  • Improvement in WiFi speeds
  • Improvement in latency / bufferbloat

 

 

Dave

 

*Edited Labels*

2,620 REPLIES 2,620

Re: CODA-4582 - Open Issues for Investigation

AccordXTC
I'm a reliable contributor

Did you know?        I recently learned today from tier 2 when it comes to messuring a customers speeds, this is done by testing a wired and wireless device at the same time. The total speeds on each device added together gets the total amount of what speed of service. So when were testing getting lower speeds there saying it means nothing unless your testing two devices at the same time and giving the total of both.

 

The their 2 rep was kind enough to point out a "poor marketing" ploy that is in the fine print under the Gigabit package and clicking on Details then How to get your best speeds highlighted in red.

 

It's a sad day when you hear of shady marketing ploys like that being allowed or even a tier 2 reps advising that.

 

Any one here been told that or want to add to it?

Re: CODA-4582 - Open Issues for Investigation

joepeps
I've been here awhile

Ive never heard that and that makes no sense.

 

But I did get told by one door knob that anything on wifi 60-150 is great even thought I have gigabit.

 

Thats the most you need and you will never get more on wifi.

 

How is this guy allowed to be a tech? lol

Re: CODA-4582 - Open Issues for Investigation

Triple_Helix
I plan to stick around

@RogersDave wrote:

 


@Triple_Helix wrote:

Only 2 issues I continue to see.

 

1. Mobile devices keep dropping the 5G Wi-Fi signal

2. Upload speed is not consistent

 


@Triple_Helix, can you clarify what devices do you have that are impacted on 5 GHz?

 

I just made a small change to your modem for that. Let me know if it helps.

 

Dave


Yes it's my new Moto Z phone and I see that you set the 5G to Auto (Channel) so I will keep an eye for disconnects.

 

Thanks,

 

Daniel Smiley Wink

Re: CODA-4582 - Open Issues for Investigation


@AccordXTC wrote:

Did you know?        I recently learned today from tier 2 when it comes to messuring a customers speeds, this is done by testing a wired and wireless device at the same time. The total speeds on each device added together gets the total amount of what speed of service. So when were testing getting lower speeds there saying it means nothing unless your testing two devices at the same time and giving the total of both.

 

The their 2 rep was kind enough to point out a "poor marketing" ploy that is in the fine print under the Gigabit package and clicking on Details then How to get your best speeds highlighted in red.

 

It's a sad day when you hear of shady marketing ploys like that being allowed or even a tier 2 reps advising that.

 

Any one here been told that or want to add to it?


Makes perfect sense since most consumer (average) computers with a gig ethernet card can reach download speeds of between 600-900 mbps and a wireless device on the 5G network can reach 70-100 mbps or more if using AC tech. The bandwidth is shared, so simultaneous tests combined would prove the 1 GIG plan.

We are not talking about gaming computers which are optimised for best performance. We are talking about Jane and John Doe and the kids.

 

Brian

Re: CODA-4582 - Open Issues for Investigation

yyzsam
I plan to stick around
I agree except the additional device doesn't have to be wireless. It's always best to test with at least two wired devices that are known to be 1g capable.


Re: CODA-4582 - Open Issues for Investigation

AccordXTC
I'm a reliable contributor

@borford funny you sound like the Teir 2 I was talking to backing up the claim. Its deceptive marketing is what it is. I would think my Samsung Galaxy S7 Edge is a Jane and Jonh Doe phone that will do between 400 - 500mbps on WiFi. 

 

But then again I also run a proper router Asus RT-AC88U than the Hitron CODA 4582. 

 

I also stated this information for customers such as myself to understand and reply to it. Not another Rogers employee to back up their fellow worker, your paid not to have an opinion. I on the other hand pay a monthly fee and can voice a positive and negtive perspective.

 

@yyzsam agreed but reread my post the speed test is both devices at the same time to give the total speed, not speed testing each one after another. I can currently get between 600 - 750 wired running full Cat6a and my router mention above. The oringal gigabit modem I was getting between 800-860 always never an issue.

 

Re: CODA-4582 - Open Issues for Investigation

Alex4161
I'm a senior contributor

@RogersDave and others,

 

There are 2 issues I have been seeing with the .24 firmware and wanted others to comment if this has happened to them:

 

1) IP6 connections are being dropped on devices connected via the 5Ghz band.

 

2) Connectivity is practically dead and looking at my modem stats, it appears that I lose the downstream channels on the OFDM:

 

OFDM Downstream Overview

Receiver

FFT type

Subcarr 0 Frequency(MHz)

PLC locked

NCP locked

MDC1 locked

PLC power(dBmv)

       

 

Power cycling the modem gives the following signal levels and connectivity is restored:

 

Downstream Overview

Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDSignal noise ratio (dB)
1615000000256QAM-2.2001136.610
2561000000256QAM-3.200235.780
3567000000256QAM-3.600335.595
4573000000256QAM-2.200435.595
5579000000256QAM-1.200535.780
6585000000256QAM-0.500636.610
7591000000256QAM0.900737.356
8597000000256QAM1.000837.636
9603000000256QAM0.700937.636
10609000000256QAM-0.6001036.610
11555000000256QAM-2.400136.387
12621000000256QAM-3.3001236.387
13633000000256QAM-2.8001336.610
14639000000256QAM-2.1001436.387
15645000000256QAM-1.5001536.610
16651000000256QAM-2.7001636.610
17657000000256QAM-3.2001736.610
18663000000256QAM-2.5001836.387
19669000000256QAM-2.2001936.387
20675000000256QAM-2.2002036.610
21681000000256QAM-1.6002136.610
22687000000256QAM-1.6002236.610
23693000000256QAM-2.4002336.610
24699000000256QAM-2.5002436.387
25705000000256QAM-3.8002536.387
26711000000256QAM-5.1002635.780
27717000000256QAM-6.1002735.084
28723000000256QAM-7.2002834.484
29825000000256QAM-4.8002935.780
30831000000256QAM-5.2003035.595
31837000000256QAM-5.5003135.595
32843000000256QAM-5.7003235.780
OFDM Downstream Overview
ReceiverFFT typeSubcarr 0 Frequency(MHz)PLC lockedNCP lockedMDC1 lockedPLC power(dBmv)
0NANANONONONA
14K275600000YESYESYES2.400002
Upstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDBandwidth
123700000ATDMA - 64QAM30.00026400000
238595648ATDMA - 64QAM35.25033200000
330596000ATDMA - 64QAM31.25016400000
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

 

 

 Has anyone else experienced any of the issues of #1 and #2 and can provide some guidence on how to resolve it?  I am willing to put this router into Bridge mode and purchase a third party router but not sure if that would fix the IP6 issues.  I am pretty sure it won't fix the connection problem and probably cause another bunch of issues with performance (if hardware acceleration is not enabled, etc.)

 

Thanks

Re: CODA-4582 - Open Issues for Investigation

Log on to your router and click on security and click on IPv6 make sure it's on minimum, mine was on custom and was having issues like you on 5G

Re: CODA-4582 - Open Issues for Investigation

Anyone having degraded WIFI issues (connectivity & loading times, not speed test specific) ? I recently switched from the Rocket AC Modem on Ignite 250u to Gigabit with the CODA modem. It appears load times for websites, apps etc have increased, & stability is not the same, family members are noticing as well....Trying to dig a little deeper into this. 

 

Downstream Overview
Port ID Frequency (MHz) Modulation Signal strength (dBmV) Channel ID Signal noise ratio (dB)
1 615000000 256QAM -3.500 11 37.636
2 561000000 256QAM -4.200 2 37.356
3 567000000 256QAM -4.400 3 37.356
4 573000000 256QAM -4.100 4 37.636
5 579000000 256QAM -4.200 5 37.636
6 585000000 256QAM -3.600 6 38.605
7 591000000 256QAM -3.700 7 37.356
8 597000000 256QAM -3.600 8 37.636
9 603000000 256QAM -3.600 9 37.636
10 609000000 256QAM -3.800 10 37.356
11 555000000 256QAM -4.200 1 37.636
12 621000000 256QAM -3.500 12 37.636
13 633000000 256QAM -3.100 13 38.605
14 639000000 256QAM -3.400 14 37.636
15 645000000 256QAM -3.000 15 37.636
16 651000000 256QAM -3.300 16 37.636
17 657000000 256QAM -2.900 17 38.605
18 663000000 256QAM -3.000 18 37.636
19 669000000 256QAM -3.800 19 37.636
20 675000000 256QAM -3.800 20 37.636
21 681000000 256QAM -4.400 21 37.636
22 687000000 256QAM -4.100 22 37.356
23 693000000 256QAM -4.400 23 37.356
24 699000000 256QAM -4.800 24 37.356
25 705000000 256QAM -5.000 25 37.636
26 711000000 256QAM -5.200 26 37.636
27 717000000 256QAM -5.000 27 37.356
28 723000000 256QAM -5.100 28 37.356
29 825000000 256QAM -7.000 29 37.356
30 831000000 256QAM -7.500 30 37.356
31 837000000 256QAM -7.400 31 37.356
32 843000000 256QAM -7.500 32 37.636

 

pstream Overview
Port ID Frequency (MHz) Modulation Signal strength (dBmV) Channel ID Bandwidth
1 38595609 ATDMA - 64QAM 45.750 6 3200000
2 30596000 ATDMA - 64QAM 43.750 4 6400000
3 23700000 ATDMA - 64QAM 42.000 5 6400000

Re: CODA-4582 - Open Issues for Investigation

Yea I am and do is a lot of other users I'm thinking of going back to the cgn3acsr

Re: CODA-4582 - Open Issues for Investigation

yyzsam
I plan to stick around
@AccordXTC

I meant at the same time too.

Re: CODA-4582 - Open Issues for Investigation

Triple_Helix
I plan to stick around

@RogersDave all of a sudden my modem is acting up and looks like I will have to get a replacement tomorrow. Channels 2 to 9 will not come back even after a factory reset and a few reboots. I have one of the first batch of Black Dots that didn't go back for QA checks.

 

 

Downstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDSignal noise ratio (dB)
1591000000256QAM3.600737.636
10615000000256QAM5.3001138.605
11621000000256QAM4.7001237.636
12633000000256QAM3.9001337.636
13639000000256QAM3.7001437.636
14645000000256QAM3.1001537.636
15651000000256QAM3.3001637.356
16657000000256QAM3.2001737.356
17663000000256QAM4.5001837.356
18669000000256QAM5.0001937.356
19675000000256QAM4.9002037.356
20681000000256QAM6.0002137.356
21687000000256QAM4.7002237.636
22693000000256QAM5.5002337.356
23699000000256QAM5.1002437.636
24705000000256QAM5.3002537.636
25711000000256QAM5.2002637.636
26717000000256QAM5.3002737.636
27723000000256QAM5.7002837.356
28825000000256QAM6.4002937.356
29831000000256QAM6.5003037.356
30837000000256QAM6.8003136.610
31843000000256QAM5.6003236.387
OFDM Downstream Overview
ReceiverFFT typeSubcarr 0 Frequency(MHz)PLC lockedNCP lockedMDC1 lockedPLC power(dBmv)
04K275600000YESYESYES1.299999
1NANANONONONA
Upstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDBandwidth
130596000ATDMA - 64QAM43.75016400000
238596000ATDMA - 64QAM45.50033200000
323700000ATDMA - 64QAM42.50026400000
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

Re: CODA-4582 - Open Issues for Investigation

yyzsam
I plan to stick around
did you power cycle the modem, aka pull the plug?

Re: CODA-4582 - Open Issues for Investigation

Triple_Helix
I plan to stick around

@Triple_Helix wrote:

@RogersDave all of a sudden my modem is acting up and looks like I will have to get a replacement tomorrow. Channels 2 to 9 will not come back even after a factory reset and a few reboots. I have one of the first batch of Black Dots that didn't go back for QA checks.

 

 

Downstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDSignal noise ratio (dB)
1591000000256QAM3.600737.636
10615000000256QAM5.3001138.605
11621000000256QAM4.7001237.636
12633000000256QAM3.9001337.636
13639000000256QAM3.7001437.636
14645000000256QAM3.1001537.636
15651000000256QAM3.3001637.356
16657000000256QAM3.2001737.356
17663000000256QAM4.5001837.356
18669000000256QAM5.0001937.356
19675000000256QAM4.9002037.356
20681000000256QAM6.0002137.356
21687000000256QAM4.7002237.636
22693000000256QAM5.5002337.356
23699000000256QAM5.1002437.636
24705000000256QAM5.3002537.636
25711000000256QAM5.2002637.636
26717000000256QAM5.3002737.636
27723000000256QAM5.7002837.356
28825000000256QAM6.4002937.356
29831000000256QAM6.5003037.356
30837000000256QAM6.8003136.610
31843000000256QAM5.6003236.387
OFDM Downstream Overview
ReceiverFFT typeSubcarr 0 Frequency(MHz)PLC lockedNCP lockedMDC1 lockedPLC power(dBmv)
04K275600000YESYESYES1.299999
1NANANONONONA
Upstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDBandwidth
130596000ATDMA - 64QAM43.75016400000
238596000ATDMA - 64QAM45.50033200000
323700000ATDMA - 64QAM42.50026400000
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

After a few more reboots (via unplug from the wall) got them all back, man what a hassle.

 

Downstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDSignal noise ratio (dB)
1591000000256QAM3.600737.636
2567000000256QAM4.100338.605
3573000000256QAM3.200438.605
4579000000256QAM3.800538.605
5585000000256QAM3.200638.605
6561000000256QAM3.800238.605
7597000000256QAM3.700837.636
8603000000256QAM4.100938.605
9609000000256QAM5.1001038.983
10615000000256QAM5.1001138.983
11621000000256QAM4.6001237.636
12633000000256QAM3.7001337.356
13639000000256QAM3.6001437.356
14645000000256QAM3.0001537.356
15651000000256QAM3.1001637.356
16657000000256QAM3.0001737.356
17663000000256QAM4.3001837.356
18669000000256QAM4.9001937.356
19675000000256QAM4.7002037.356
20681000000256QAM5.8002137.356
21687000000256QAM4.7002237.356
22693000000256QAM5.3002337.356
23699000000256QAM4.9002437.356
24705000000256QAM5.1002537.356
25711000000256QAM5.0002637.636
26717000000256QAM5.2002737.636
27723000000256QAM5.6002837.636
28825000000256QAM6.1002936.610
29831000000256QAM6.4003037.356
30837000000256QAM6.6003136.610
31843000000256QAM5.4003236.387
32555000000256QAM3.500138.605
OFDM Downstream Overview
ReceiverFFT typeSubcarr 0 Frequency(MHz)PLC lockedNCP lockedMDC1 lockedPLC power(dBmv)
04K275600000YESYESYES1.200001
1NANANONONONA
Upstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDBandwidth
123700000ATDMA - 64QAM42.75026400000
238596000ATDMA - 64QAM45.25033200000
330596000ATDMA - 64QAM43.50016400000
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

Re: CODA-4582 - Open Issues for Investigation

@4kgigabitguy can you have a look at the following post and follow the instructions included. 

 

http://communityforums.rogers.com/t5/forums/forumtopicpage/board-id/Getting_connected/message-id/436...

 

Hopefully this will give me a little more info on the 5g settings for those users who are seeing problems on the 5g network. 

Re: CODA-4582 - Open Issues for Investigation

Just to provide another data point, I'm cascading from the CODA-4582 to an ASUS router (not ideal) whereas with the CGR3 I was in bridge mode, and I notice no performance hit on the CODA-4582 as compared to the CGR3.  When I first installed the CODA-4582, it would drop all connections after about bring up about four to six hours, but the update to .24 firmware fixed all issues for me. YMMV of course.

Re: CODA-4582 - Open Issues for Investigation

Mythen
I plan to stick around

@Datalink @RogersDave

 

The new config file that Dave sent to my modem has fixed my frequent disconnect issue on my 5ghz band.  Also I had to change the channel to 149-161 in order to get much better range.  Thanks Dave.  

 

Only other issue is around 3 to 5 pm local time I experience very high latency spikes. 

 

Any thoughts on what I can do here?

 

Thanks 

 

Mythen

Re: CODA-4582 - Open Issues for Investigation

@Mythen are you running DOCSIS 3.1 yet?

Re: CODA-4582 - Open Issues for Investigation

Alex4161
I'm a senior contributor
@lethalsniper

I changed the firewall setting and that helped. The issue now is the constant loss of the OFDM Downstream channel rendering my internet connection useless. I have to power cycle the modem every few hours.

Re: CODA-4582 - Open Issues for Investigation

Mythen
I plan to stick around

@Datalink

 

No not on Docsis 3.1 yet

 

 

Re: CODA-4582 - Open Issues for Investigation

I'm on docs 3.1 and I'm getting more speed degradation now then when I was on 3.0 , from the times 3- 11pm this is ridiculous and when I call tech support they tell me everything is fine on there end , they ping my modem and signal levels are fine so ...... I'm straying to wonder if it's just the coda modem and the docs 3.1 is causing the speed degration from I remember I don't think I was getting this when I was on the cgn3acsmr. I don't know how Rogers can get away from this.evey time I call in they don't know what's going on its rediclous nobody can give me a clear answer this has been going on for a month or 2 @RogersDave @Datalink