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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

Telek
I plan to stick around

@Triple_Helix wrote:

@RogersDave one small bug to report and I'm not sure if others see this? .23 version 1 and .23 version 2 have the same issue for me? I don't make any changes but when I click on Device Reset it's always asking to save things?

 


I have that too, but it's because my browser auto-populates the password field, so when I switch over to that tab it thinks that I'm trying to change my password.  Happened on all firmware releases for me.

Re: CODA-4582 - Open Issues for Investigation

Telek
I plan to stick around

@Bond007 wrote:

@RogersDave - After the new .23 FW pushed the modem is not running on DOCSIS 3.1. Both upload and download light are blue and not purple.

 

Also, my ping time are high between 30 - 38ms and at time could be higher.

 

Any thoughts? 


What site are you pinging that you are seeing 30-38ms? Or is that the speed test?

Re: CODA-4582 - Open Issues for Investigation

Triple_Helix
I plan to stick around

@Telek wrote:

@Triple_Helix wrote:

@RogersDave one small bug to report and I'm not sure if others see this? .23 version 1 and .23 version 2 have the same issue for me? I don't make any changes but when I click on Device Reset it's always asking to save things?

 


I have that too, but it's because my browser auto-populates the password field, so when I switch over to that tab it thinks that I'm trying to change my password.  Happened on all firmware releases for me.


Interesting! I use Firefox for the most part so I will check my other browsers.

Re: CODA-4582 - Open Issues for Investigation

Triple_Helix
I plan to stick around

@Triple_Helix wrote:

@Telek wrote:

@Triple_Helix wrote:

@RogersDave one small bug to report and I'm not sure if others see this? .23 version 1 and .23 version 2 have the same issue for me? I don't make any changes but when I click on Device Reset it's always asking to save things?

 


I have that too, but it's because my browser auto-populates the password field, so when I switch over to that tab it thinks that I'm trying to change my password.  Happened on all firmware releases for me.


Interesting! I use Firefox for the most part so I will check my other browsers.


Yea it's Firefox! Chrome and Internet Explorer works fine and don't see the same issue.

Re: CODA-4582 - Open Issues for Investigation

So can anyone confirm this new .23 firmware is more steady with speeds and ping /latency ? I'm on 23 now but speeds up and down and also ping and jitter, at times I get jitter of 23 ms and ping hopefully it's fixed now

Re: CODA-4582 - Open Issues for Investigation

JohnBeaudin
I'm a senior contributor

speed is stable, ( I never had issues with degradation before thought).

So down & up still very consistent for me, latency/ping about the same as before.

Hard to tell if it fixed the degradation speed over time becaue I was never experiencing it in the first place, but still consistent for me on new .23

Re: CODA-4582 - Open Issues for Investigation

RogersDave
Retired Support
Retired Support

For users seeing D3.1 being enabled after this new firmware, it's a good thing. This firmware is more robust in locking onto the OFDM DOCSIS3.1 channel. It likely means that your area was already D3.1 enabled but your modem was unabled to lock onto the channel.

 

Speed degradation over time is also related as some modems were locking onto that channel and then getting into bad conditions without letting it go. This was creating slower speeds.

 

@Bond007, your situation is different. Are you saying that your modem was in DOCSIS 3.1 before? I checked your CMTS and it is not fully enabled for D3.1 yet so not sure what to say there.  It is officially coming in the next month or so.

 

Dave

Re: CODA-4582 - Open Issues for Investigation

@RogersDave when will you deploy this new .23 firmware to all of us that's on the trial version and once on it can we go back to reg .23 ? And will this new .23 firm benefit me as you know I have sent you many test , images of speed issues and ping thanks.

Re: CODA-4582 - Open Issues for Investigation

Bond007
I plan to stick around
As far as I can recall, yesterday my lights were purple. I had to reboot the modem this morning after the revised .23 FW was pushed, and that is when the light changed from purple to blue.

It could someone at Rogers testing or doing something.

At least, we know what happened and shall keep an eye for full rollout of DOCSIS 3.1

Re: CODA-4582 - Open Issues for Investigation

kibosh
I plan to stick around

If both your lights were the same colour they were likely blue . . . as far as I know DOCSIS 3.1 is only enabled on downstream for now.  Right now, my top light is purple and the bottom one is blue.

Re: CODA-4582 - Open Issues for Investigation

JohnBeaudin
I'm a senior contributor

That's right, they will only start to deploy D3.1 for Upstream after Summer.

Re: CODA-4582 - Open Issues for Investigation

Bond007
I plan to stick around
Both my lights are blue, and you are correct about the downstream light. If my modem is connected to DOCSIS 3.1, the light should be purple, which is not the case.

@RogersDave - Has responded, apparently, DOCSIS 3.1 is not fully rolled out in my area. Someone in the backend would be testing or network changes happening at the time.

Re: CODA-4582 - Open Issues for Investigation

JohnBeaudin
I'm a senior contributor

you guys in Ontario are lucky, won't see D3.1 until late March in New-Brunswick heh got to stick with old 3.0 vor a while ;(

Re: CODA-4582 - Open Issues for Investigation

Jeffj
I plan to stick around

@JohnBeaudin wrote:

you guys in Ontario are lucky, won't see D3.1 until late March in New-Brunswick heh got to stick with old 3.0 vor a while ;(


Not all of us in ontario. 

 

My town will probably see it after NB LOL.  the GTA will get and then the rest of ontario will be still standing around hands out lol 

Re: CODA-4582 - Open Issues for Investigation

Hybrid_Noodle
I plan to stick around
Look at the bright side @JohnBeaudin us Ontario folks are seeing/fixing the potential issues so your roll out will/should go much smoother.

Re: CODA-4582 - Open Issues for Investigation

kibosh
I plan to stick around

My modem just rebooted suddenly and now I have .24.

Re: CODA-4582 - Open Issues for Investigation

JohnBeaudin
I'm a senior contributor

same here modem rebooted and I am now on .24

 

any updates log @RogersDave ?

Re: CODA-4582 - Open Issues for Investigation

markopas
I plan to stick around

@kibosh wrote:

My modem just rebooted suddenly and now I have .24.


I hope I get .24 by time I get home from work.

Re: CODA-4582 - Open Issues for Investigation

JohnBeaudin
I'm a senior contributor

2.0.10.24 (February 16, 2017) *

  • Tentative Fix: Slowly degrading speed over time
  • Tentative Fix: Latency build up over time

here it is

Re: CODA-4582 - Open Issues for Investigation


@JohnBeaudin wrote:

same here modem rebooted and I am now on .24

 

any updates log @RogersDave ?


The update log was posted an hour ago 🙂

 

.24 is "2nd version .23" recompiled to have its own version number. It's the same firmware you had yesterday but now I can see how has it from the network.

 

I started pushing it to all trial participants.

 

Dave

Re: CODA-4582 - Open Issues for Investigation

toolcubed
I'm a senior contributor

Ditto...modem just rebooted on its own and now has .24