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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

Figures they change the speeds to uploads I could never pass which was 30Mbps. I'm sure next Gigabit package will drop down to 600-700Mbps package as most don't get those speeds ether.

 

What a joke they post this and don't even tell existing customers!

Re: CODA-4582 - Open Issues for Investigation

Triple_Helix
I plan to stick around

Now they deleted my other thread about the service changes....... Well they moved it over here: http://communityforums.rogers.com/t5/forums/forumtopicpage/board-id/MyRogersSupport/thread-id/18830

Re: CODA-4582 - Open Issues for Investigation

bhaskarp
I plan to stick around
how are my signals? im experiencing degraded performance
Downstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDSignal noise ratio (dB)
1591000000256QAM-1.000736.610
2567000000256QAM-2.100336.387
3573000000256QAM-1.600436.610
4579000000256QAM-1.200536.610
5585000000256QAM-1.200636.610
6561000000256QAM-1.900236.387
7597000000256QAM-0.900837.356
8603000000256QAM-0.800937.356
9609000000256QAM-0.2001037.356
10615000000256QAM0.1001137.356
11621000000256QAM0.3001237.636
12633000000256QAM1.0001337.356
13639000000256QAM1.2001437.636
14645000000256QAM1.1001537.636
15651000000256QAM1.1001637.636
16657000000256QAM1.4001737.636
17663000000256QAM1.3001837.636
18669000000256QAM1.4001937.636
19675000000256QAM1.5002037.636
20681000000256QAM1.5002137.636
21687000000256QAM1.6002237.636
22693000000256QAM1.6002337.356
23699000000256QAM1.6002437.356
24705000000256QAM1.5002537.636
25711000000256QAM1.3002637.636
26717000000256QAM1.2002737.356
27723000000256QAM1.1002837.356
28825000000256QAM2.5002937.636
29831000000256QAM2.2003037.636
30837000000256QAM2.2003137.636
31843000000256QAM1.8003237.356
32555000000256QAM-1.700136.610
OFDM Downstream Overview
ReceiverFFT typeSubcarr 0 Frequency(MHz)PLC lockedNCP lockedMDC1 lockedPLC power(dBmv)
04K275600000YESYESYES-4.700001
1NANANONONONA
Upstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDBandwidth
123700000ATDMA - 64QAM34.25026400000
238595629ATDMA - 64QAM38.75033200000
330596000ATDMA - 64QAM35.50016400000
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

Jeffj
I plan to stick around

@Triple_Helix wrote:

Now this sucks why even bother with the Gigabit service? http://communityforums.rogers.com/t5/forums/forumtopicpage/board-id/Getting_connected/thread-id/4316...

 

Image and video hosting by TinyPic

whats more concerning is they are charging the same price...

 

Download is great but people are begging for upload these days with game streaming, cloud storage and working from home.  Upload speeds in canada are darn near third world still.

Re: CODA-4582 - Open Issues for Investigation

hi-tek
I've been here awhile

I've never really had any speed issues since I got the gigabit service install, usually 700Mbps-950MBps download to servers all across NA and Europe and uploads capped around 33Mbps with a bit of drop off on that to further locations. The odd time I would notice some congestion-like issues around prime time but I can live with that as it was never really that bad.

 

Since the firmware updated to .24 I've been having some issues with the wireless connections and missing a lot of docsis channels.

 

When I was on .19 I did notice channels 22 and 23 were missing the odd time, I'd also have issues getting ethernet ports able to access the modem after a reboot/reset while the wireless devices would be connected and able to use the internet.

 

Here is the current information from the DOCSIS WAN page: http://pastebin.com/TrQMWjNY

 

I'm using the original CODA-4582 as the gateway with three of the ethernet ports populated, two desktops at 1000mbit and my obi VOIP adapter connects at 100mbit.

The rest of the devices in the house connect via wireless, 2.4ghz and 5ghz, nothing faster than N afaik and I never really use them so I don't tend to notice any issues.

 

I'm going to try and get one of the newer modems with the black dots soon but I just thought I'd make a post and add a bit more data to the thread and to the people working on these issues.

Re: CODA-4582 - Open Issues for Investigation

JohnBeaudin
I'm a senior contributor

@RogersDave

 

is a fix for UDP in the work for .25 ?

Re: CODA-4582 - Open Issues for Investigation

14N
I plan to stick around

Hi @RogersDave

 

Although the issue on bridge mode on TP-link routers already fixed since .23, I just noticed that when I connected to my TP-Link router (CODE in bridge mode) with 2.4Ghz, speed drops to less than 10mbps, most of the time below 1mbps. With 5Ghz I get the same speed with CODA not in bridge mode. I'm on .24, did not use 2.4Ghz on .23.

 

The best firmware so far in my experience is .23, with 24 I got random reboots.

 

Also put back special characters for passwords.

 

Thanks 

 

 

Re: CODA-4582 - Open Issues for Investigation

rjmaxim
I plan to stick around

@Jeffj wrote:

@Triple_Helix wrote:

Now this sucks why even bother with the Gigabit service? http://communityforums.rogers.com/t5/forums/forumtopicpage/board-id/Getting_connected/thread-id/4316...

 

Image and video hosting by TinyPic

whats more concerning is they are charging the same price...

 

Download is great but people are begging for upload these days with game streaming, cloud storage and working from home.  Upload speeds in canada are darn near third world still.


Totally agree..... We are way behind South Korea, who have highest average than any country and fair price. My relatives in Sweden and Japan have FTTH and pay much lower for 1Gbps service then us. Even friends in Greece pay MUCH lower for 50Mbps and Wireless then us Canucks....with their economy? That's what happens when you have our CRTC and no competition. We just have to keep on smiling and hoping it gets better.Smiley Very Happy     

Re: CODA-4582 - Open Issues for Investigation

JohnBeaudin
I'm a senior contributor

Over priced Internet and Overpriced Wireless, welcome to Canada

Re: CODA-4582 - Open Issues for Investigation

huuu
I plan to stick around

so the rogers cap for upload on 1gig profile is 30mbps now huh lol

Re: CODA-4582 - Open Issues for Investigation

JohnBeaudin
I'm a senior contributor

I am pretty sure they will make it higher as soon as they deploy D3.1 for the upstream.

Re: CODA-4582 - Open Issues for Investigation

Telek
I plan to stick around

@Jeffj wrote:

whats more concerning is they are charging the same price...

 

Download is great but people are begging for upload these days with game streaming, cloud storage and working from home.  Upload speeds in canada are darn near third world still.


Didn't gigabit used to cost $170? I know that it was more expensive than $145, which is the current price.

Re: CODA-4582 - Open Issues for Investigation

Telek
I plan to stick around

@AccordXTC wrote:

Figures they change the speeds to uploads I could never pass which was 30Mbps. I'm sure next Gigabit package will drop down to 600-700Mbps package as most don't get those speeds ether.

 

What a joke they post this and don't even tell existing customers!


Several people here get 940/50 pretty regularly. I think it depends on your area.

 

Not that it's any different than DSL, and Bell and Rogers have been advertising "up to" speeds for a decade.

Re: CODA-4582 - Open Issues for Investigation

ghost1001
I plan to stick around

Was there ever a solution to the: "DHCP RENEW WARNING - Field invalid in response v4 option" event in the DOCSIS log? I've been getting them daily after the switch to IPv6

Re: CODA-4582 - Open Issues for Investigation

Telek
I plan to stick around

@Jeffj wrote:

Download is great but people are begging for upload these days with game streaming, cloud storage and working from home.  Upload speeds in canada are darn near third world still.


Actually, Canada ranks amongst the highest upload speeds, at least based on what I could find...

 

Average upload speeds by country, in mbps:

 

Denmark46.08Sept '16
US18.88June '16
Finland15.38June '16
Canada11.04June '16
Mexico11.03June '16
UK9.13Sept '16
Germany8.43Sept '16
Brazil6.08June '16
Turkey3.82Sept '16
Belize3.34 
Nicaragua2.44 
Argentina2.13 
Peru1.83

June '16

 

Keep in mind, that 10mbit upstream is 4.5GB/hour and 108GB/day.  There are very few people that need more than that, even for cloud backup and storage and work access.

Re: CODA-4582 - Open Issues for Investigation

gp-se
I'm an advisor

@hi-tek wrote:

I've never really had any speed issues since I got the gigabit service install, usually 700Mbps-950MBps download to servers all across NA and Europe and uploads capped around 33Mbps with a bit of drop off on that to further locations. The odd time I would notice some congestion-like issues around prime time but I can live with that as it was never really that bad.

 

Since the firmware updated to .24 I've been having some issues with the wireless connections and missing a lot of docsis channels.

 

When I was on .19 I did notice channels 22 and 23 were missing the odd time, I'd also have issues getting ethernet ports able to access the modem after a reboot/reset while the wireless devices would be connected and able to use the internet.

 

Here is the current information from the DOCSIS WAN page: http://pastebin.com/TrQMWjNY

 

I'm using the original CODA-4582 as the gateway with three of the ethernet ports populated, two desktops at 1000mbit and my obi VOIP adapter connects at 100mbit.

The rest of the devices in the house connect via wireless, 2.4ghz and 5ghz, nothing faster than N afaik and I never really use them so I don't tend to notice any issues.

 

I'm going to try and get one of the newer modems with the black dots soon but I just thought I'd make a post and add a bit more data to the thread and to the people working on these issues.


@hi-tek swap the modem since you are missing channels, your original batch modem suffers from the interference issue. 

Re: CODA-4582 - Open Issues for Investigation

@bhaskarp your SNR levels look a little low, I like to see 38 as a minimum, most likely there is noise on the line causing issues. Call Tech support and see what they say.

 

Re: CODA-4582 - Open Issues for Investigation

gp-se
I'm an advisor

@huuu wrote:

can someone analyze my coda modem stats here? i only get 450mbps max...no where close to 1gig speeds..do i have low signals that need a tech to repair or its within specs

 

thanks

 

Port ID Frequency (MHz) Modulation Signal strength (dBmV) Channel ID Signal noise ratio (dB)
1 591000000 256QAM -3.400 7 35.595
2 561000000 256QAM -1.400 2 36.387
3 567000000 256QAM -2.100 3 36.610
4 573000000 256QAM -1.800 4 36.610
5 579000000 256QAM -2.400 5 36.387
6 585000000 256QAM -2.900 6 36.610
7 555000000 256QAM -1.300 1 36.610
8 597000000 256QAM -3.700 8 35.595
9 603000000 256QAM -3.700 9 35.780
10 609000000 256QAM -5.000 10 35.595
11 615000000 256QAM -4.900 11 35.595
12 621000000 256QAM -4.000 12 35.780
13 633000000 256QAM -3.900 13 36.610
14 639000000 256QAM -4.000 14 36.387
15 645000000 256QAM -4.100 15 36.610
16 651000000 256QAM -4.100 16 36.610
17 657000000 256QAM -4.900 17 35.780
18 663000000 256QAM -5.300 18 35.595
19 669000000 256QAM -5.500 19 35.084
20 675000000 256QAM -5.600 20 35.084
21 681000000 256QAM -5.400 21 35.595
22 687000000 256QAM -5.600 22 35.780
23 693000000 256QAM -5.500 23 35.780
24 699000000 256QAM -5.300 24 35.595
25 705000000 256QAM -5.600 25 35.084
26 711000000 256QAM -6.400 26 35.084
27 717000000 256QAM -6.200 27 34.926
28 723000000 256QAM -7.000 28 33.957
29 825000000 256QAM -6.800 29 35.084
30 831000000 256QAM -7.600 30 34.926
31 837000000 256QAM -6.800 31 35.084
32 843000000 256QAM -6.200 32 35.595
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 -1.099998
Upstream Overview
Port ID Frequency (MHz) Modulation Signal strength (dBmV) Channel ID Bandwidth
1 38595785 ATDMA - 64QAM 38.750 3 3200000
2 30596000 ATDMA - 64QAM 35.000 1 6400000
3 23700000 ATDMA - 64QAM 33.000 2 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

@huuu SNR levels look very low, call tech support and ask them to check the levels.

 

Re: CODA-4582 - Open Issues for Investigation

limiteddi
I've been around

Anyone else not able to connect to any DDNS sites? My ip changed, modem failed to update DDNS. Can't seem to connect to any DDNS vendors.

Re: CODA-4582 - Open Issues for Investigation

Alance
I've been here awhile

What is the ideal range for Upstream Signal Strength? I'm currently receiving:

Upstream Overview
Port ID Frequency (MHz) Modulation Signal strength (dBmV) Channel ID Bandwidth
1 23700000 ATDMA - 64QAM 31.250 2 6400000
2 38596000 ATDMA - 64QAM 35.250 3 3200000
3 30596000 ATDMA - 64QAM 31.250 1 6400000

 

and I am not having a good time.

Re: CODA-4582 - Open Issues for Investigation

@Alance Rogers uses Pre-Equalization on the upstream path, which essentially means that the CMTS is in charge of the modem's upstream power output levels.  The target for the upstream signal arrival at the CMTS is 0 dBmV with a signal to noise ratio minimum of 25 dB, so, the CMTS commands the modem's output levels to move up or down as required to meet the CMTS arrival levels.  My upstream signal levels are similar to yours but from what I can see, we're not suffering from any data rate issues. 

 

Historically it was typical to see a normal range of 36 to 40 dBmV, but with the 4582, those days are gone.  What you don't want to see are levels in the 51/52 dBmV range which indicates that the modem output power levels are at their maximum for three or four channel operation.  If the power level is still insufficient, the modem will shut down a channel and run the remaining two channels at higher levels.  If that doesn't work, another channel is shut down, leaving one channel in operation.  When you're at the one or two upstream channel stage, you have a cable and/or connector failure in operation and you would really notice slow data rates.