cancel
Showing results for 
Search instead for 
Did you mean: 

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

JohnBeaudin
I'm a senior contributor

@lethalsniper

 

on coda .19 is in production

and .20 for trial participants.

 

I am curently on .20

Re: CODA-4582 - Open Issues for Investigation

@lethalsniper your signal levels are ok from what I can see except for the missing channel 14, which I know has been a problem for you in the past.  It still appears to be an issue.  

 

Can you try to copy and paste the downstream and upstream tables from the modem's status page again and paste them into your previous post, essentially overwrite the previous entries.  When you select the tables from the modem's Status web page, you should be able to right click to select Copy, and from there you should be able to paste that into the post, preserving the overall appearance of the tables.  That normally works and makes it easier to read the data.  

Re: CODA-4582 - Open Issues for Investigation

Okay thanks. What's the diff from my firmware or .19

Re: CODA-4582 - Open Issues for Investigation

Re: CODA-4582 - Open Issues for Investigation

lethalsniper
I'm an enthusiast

Port ID Frequency (MHz) Modulation Signal strength (dBmV) Channel ID Signal noise ratio (dB)
1 591000000 256QAM 4.700 31 40.366
2 363000000 256QAM 1.200 10 38.983
3 369000000 256QAM 1.800 11 40.366
4 375000000 256QAM 1.600 12 38.983
5 381000000 256QAM 1.500 13 40.366
6 387000000 256QAM 1.600 14 40.366
7 393000000 256QAM 1.700 15 40.366
8 399000000 256QAM 2.000 16 40.366
9 405000000 256QAM 1.900 17 40.366
10 411000000 256QAM 1.900 18 40.366
11 417000000 256QAM 2.200 19 40.366
12 423000000 256QAM 2.500 20 40.366
13 429000000 256QAM 2.800 21 39.855
15 441000000 256QAM 2.900 23 38.983
16 447000000 256QAM 3.100 24 40.366
17 555000000 256QAM 4.700 25 38.983
18 561000000 256QAM 4.500 26 40.366
19 567000000 256QAM 4.700 27 40.366
20 573000000 256QAM 4.300 28 38.983
21 579000000 256QAM 4.400 29 38.983
22 585000000 256QAM 4.500 30 40.366
23 357000000 256QAM 1.500 9 40.366
24 597000000 256QAM 4.800 32 38.983
25 603000000 256QAM 5.100 33 40.366
26 609000000 256QAM 5.300 34 38.605
27 615000000 256QAM 5.100 35 38.983
28 621000000 256QAM 5.200 36 40.946
29 633000000 256QAM 5.200 37 40.366
30 639000000 256QAM 5.600 38 38.605
31 645000000 256QAM 5.700 39 40.366
32 651000000 256QAM 5.600 40 40.366

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 NA NA NO NO NO NA

Upstream Overview
Port ID Frequency (MHz) Modulation Signal strength (dBmV) Channel ID Bandwidth
1 38595727 ATDMA - 64QAM 37.500 3 3200000
2 30596000 ATDMA - 64QAM 34.250 1 6400000
3 23700000 ATDMA - 64QAM 33.750 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

Re: CODA-4582 - Open Issues for Investigation

Will I get firmware 19 automatically some time this week or will I have to contact Rogersdave

Re: CODA-4582 - Open Issues for Investigation

That doesn't look too bad.  Strange that channel 14 isn't showing up.  You're running on Docsis 3.0 at the moment.  

 

One would think that it shouldn't be hard to determine if the CMTS line card is transmitting channel 14 or not, and, if it is, where does it stop enroute to your modem.  

 

 Send your request for .20 to @CommunityHelps.  Include the MAC address and serial number which is located on the STATUS page.  

Re: CODA-4582 - Open Issues for Investigation

Technician came out yesterday and he said he ran some test and the whole building where I live has the same issue as me. There sending the maintenance guys to fix it should take few days that's what there saying

Re: CODA-4582 - Open Issues for Investigation

Triple_Helix
I plan to stick around

@RogersDave My Download Signals are off the chart again and as I said before I have the central cable hub about 20 feet away from my house. Do you think I should install the 6db cable attenuator that I have that I got from a rogers tech truck? It's running fine as is and no dropping of the internet or any other issues?

 

TIA,

 

Daniel Smiley Wink

 

Speed tests done on the CODA Black Dot via the 5G wireless channel.

 

 

2017-01-18_14-27-38.png

 

Downstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDSignal noise ratio (dB)
1591000000256QAM7.5003140.366
2657000000256QAM7.4004138.983
3663000000256QAM8.6004238.983
4669000000256QAM9.3004338.983
5675000000256QAM9.6004438.605
6681000000256QAM9.9004538.605
7687000000256QAM9.8004638.983
8693000000256QAM9.8004738.983
9699000000256QAM8.8004837.636
10705000000256QAM9.1004937.636
11711000000256QAM9.0005037.356
12717000000256QAM9.5005137.636
13723000000256QAM9.9005236.610
14825000000256QAM9.9005336.387
15831000000256QAM10.8005437.356
16837000000256QAM10.7005537.356
17843000000256QAM9.8005637.356
18849000000256QAM9.6005737.356
19567000000256QAM8.2002740.366
20573000000256QAM8.3002840.366
21579000000256QAM8.1002940.946
22585000000256QAM8.1003040.366
23855000000256QAM8.7005837.356
24597000000256QAM7.2003240.366
25603000000256QAM7.9003340.366
26609000000256QAM8.4003440.366
27615000000256QAM9.1003540.366
28861000000256QAM7.5005937.356
29633000000256QAM9.1003740.366
30639000000256QAM7.9003838.605
31645000000256QAM7.2003938.983
32651000000256QAM7.0004038.605
OFDM Downstream Overview
ReceiverFFT typeSubcarr 0 Frequency(MHz)PLC lockedNCP lockedMDC1 lockedPLC power(dBmv)
0NANANONONONA
1NANANONONONA
Upstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDBandwidth
130596000ATDMA - 64QAM41.50016400000
238596000ATDMA - 64QAM43.75033200000
323700000ATDMA - 64QAM40.25026400000
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

Hey your speeds look good to me with 2 jitter what firmware are you on ?

Re: CODA-4582 - Open Issues for Investigation

Triple_Helix
I plan to stick around

Another odd issue has corrected itself for some reason? They both show as ON now?

 

I'm still on .20 Firmware.

 

2017-01-18_14-39-17.png

 

2017-01-18_14-36-11.png

 

2017-01-18_14-36-29.png

 

 

Re: CODA-4582 - Open Issues for Investigation

@Triple_Helixthe -6db attenuator will definately help reduce the downstream strength closer to what it should be. However that in turn will raise the upstream signal strength as well which may put your on the higher end of that scale (Should be around mid 40's as the range is +35dB to +52dB).

 

I had the same issue with high downstream signals and ended up putting a -9db attenuator to lower them down closer to the 0 range which helped my speeds a lot. However my upload signal strength was at a lower starting level (38's) which gave me more room.

 

I would recommended putting the attenuator on and having a look at the signal levels/speeds for testing and make the call from there as you can always remove it if things start acting up.

Re: CODA-4582 - Open Issues for Investigation


@Vikentieff wrote:

But what if I was registred for the beta with an older modem and now got it swapped for coda? Dave mentioned somewhere that such testers don't need to register again. But what if I would like to get .20 pushed to my modem instead of the .19? I PMed Dave anyway, still no reply...


@Vikentieff, If you were already on the trial, I will eventually detect it. I update all the records every 2-3 weeks. In that case, sending me a PM also works.

 

Just keep in mind that I am receiving a lot of private messages these days. Ultimately, I'm really trying to get some testing done, document open issues, make sure that Hitron has everything they need to correctly diagnose issues.

 

I have a backlog right now on some forum posts, trying to get a resolution for the problems affecting multiple customers. Unfortunately, I may be lacking the time to answer everybody at this point but I'm doing my best.

 


@lethalsniper wrote:
  • @just picked up the coda modem i have the firmware .13 is that the newest one ? if you dont mind @Datalink @RogersDave can you please have a look at my modem signals do they look normal?

 


@lethalsniper, I just checked your modem and aside from the 435 MHz channel (you are aware of this situation), everything else looks good. I've also pushed the latest test firmware to your modem.

 


@Triple_Helix wrote:

@RogersDave My Download Signals are off the chart again and as I said before I have the central cable hub about 20 feet away from my house. Do you think I should install the 6db cable attenuator that I have that I got from a rogers tech truck? It's running fine as is and no dropping of the internet or any other issues?

 


@Triple_Helix, yes I would put that attenuator, that signal is too high. But we will have to keep an eye on your uplink. Depending on the attenuator you have, it will have a different impact but I can check that easily (I wouldn't trust 100% the uplink signal values from the modem. They are reported in D3.1 mode although this is D3.0 so there is a delta.

 

Dave

Re: CODA-4582 - Open Issues for Investigation

Thanks @RogersDave Quick question what is the difference between the firmware .20 you push to my modem or if someone has the same modem as me and just waits for that firmware is it the same or the one I get still in trial/ testing ? Again thanks @RogersDave

Re: CODA-4582 - Open Issues for Investigation

It will be the same .20 version.

Re: CODA-4582 - Open Issues for Investigation

You are officially registered as a trial participants so I pushed the latest version to your modem which is 2.0.10.20. When I receive 2.0.10.21 or any future version, you will also receive it.

 

If someone is not on the trial, their modem will get updated automatically to the production version, which is currently 2.0.10.19, within 48-72 hours.

 

The change log is available in this message

 

Dave

Re: CODA-4582 - Open Issues for Investigation

wh4tfi
I've been here awhile

I'm still seeing v19 firmware.

Re: CODA-4582 - Open Issues for Investigation

Triple_Helix
I plan to stick around

@RogersDave this is my signals now with the -6db attenuator installed and rebooted so is it okay (better) now?

 

 

2017-01-18_20-21-38.png

 

Downstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDSignal noise ratio (dB)
1609000000256QAM2.9003438.605
2363000000256QAM-1.3001038.983
3369000000256QAM-0.7001138.983
4375000000256QAM-1.0001238.605
5381000000256QAM-1.8001338.605
6387000000256QAM-1.1001438.605
7393000000256QAM-1.0001538.605
8399000000256QAM-0.1001638.983
9405000000256QAM-0.2001738.983
10411000000256QAM0.1001838.983
11417000000256QAM0.6001938.605
12423000000256QAM0.8002038.983
13429000000256QAM0.6002138.605
14435000000256QAM0.2002238.605
15441000000256QAM-0.1002338.605
16447000000256QAM0.1002438.605
17555000000256QAM2.1002538.605
18561000000256QAM2.3002638.983
1956700000064QAM2.200274.191
2057300000064QAM2.300284.191
21579000000256QAM2.100294.243
2258500000064QAM2.200304.191
23591000000256QAM1.5003137.636
2459700000064QAM1.500324.191
2560300000064QAM2.200334.191
2660900000064QAM-1.20094.191
27615000000256QAM3.4003538.605
28621000000256QAM3.4003638.605
29633000000256QAM3.1003738.605
30639000000256QAM2.0003837.636
31645000000256QAM1.2003937.636
32651000000256QAM0.8004037.636
OFDM Downstream Overview
ReceiverFFT typeSubcarr 0 Frequency(MHz)PLC lockedNCP lockedMDC1 lockedPLC power(dBmv)
0NANANONONONA
1NANANONONONA
Upstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDBandwidth
138596000ATDMA - 64QAM49.75033200000
230596000ATDMA - 64QAM47.75016400000
323700000ATDMA - 64QAM46.25026400000
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

RyzenFX
I'm a reliable contributor

The SNR levels on the downstream that are on 4.191 looks pretty bad. Have you rebooted the modem? Once you do so run a speedtest to see if speeds improved.

Re: CODA-4582 - Open Issues for Investigation

@Triple_Helix check the attenuator.  It should be hand tightened, or, very lightly with a wrench, and I do mean very lightly.  If the channels with the signal to noise ratios of 4.191 don't improve back up to the mid thirties, pull the attenuator off completely as it won't be doing you any good with those low signal to noise ratios.  

Re: CODA-4582 - Open Issues for Investigation

Triple_Helix
I plan to stick around

@eddiethefunnyon wrote:

The SNR levels on the downstream that are on 4.191 looks pretty bad. Have you rebooted the modem? Once you do so run a speedtest to see if speeds improved.


 @Datalink Rebooted again and many download channels missing.

 

 

2017-01-18_20-31-30.png

 

Downstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDSignal noise ratio (dB)
1609000000256QAM2.9003438.605
2363000000256QAM-1.3001038.605
3369000000256QAM-0.7001138.605
4375000000256QAM-1.0001238.605
5381000000256QAM-1.7001338.983
6387000000256QAM-1.2001438.605
7393000000256QAM-1.0001538.983
8399000000256QAM-0.2001638.983
9405000000256QAM-0.2001738.605
10411000000256QAM0.1001838.605
11417000000256QAM0.5001938.983
12423000000256QAM0.7002038.983
13429000000256QAM0.5002138.605
14435000000256QAM0.2002238.605
15441000000256QAM-0.1002338.983
16447000000256QAM0.0002438.983
17555000000256QAM2.0002538.605
18561000000256QAM2.3002638.605
23591000000256QAM1.5003137.636
27615000000256QAM3.5003538.605
28621000000256QAM3.4003638.605
29633000000256QAM3.1003738.605
30639000000256QAM1.9003837.636
31645000000256QAM1.2003937.356
32651000000256QAM0.9004037.356
OFDM Downstream Overview
ReceiverFFT typeSubcarr 0 Frequency(MHz)PLC lockedNCP lockedMDC1 lockedPLC power(dBmv)
0NANANONONONA
1NANANONONONA
Upstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDBandwidth
138596000ATDMA - 64QAM49.75033200000
230596000ATDMA - 64QAM48.00016400000
323700000ATDMA - 64QAM46.25026400000
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