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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

Oh agreed, and I'm sure that Rogers could fix it.

 

But let's face it -- is it a priority for them? Based on all the other much bigger problems that affect way more people?  It could also be unfixable, I have no idea how their routing is defined, but based on what they purchase from the upstream providers it simply may not be something that can be changed.

 

Hitting it from the twitch side may be more efficatious. Offer to beta test or collect data for them to see what's causing not only the buffering, but the broken client that refuses to continue playing without a reload.

Re: CODA-4582 - Open Issues for Investigation

JohnBeaudin
I'm a senior contributor

if Rogers would  be willing to contact Twitch I am pretty sure this could be fixed quickly.

Re: CODA-4582 - Open Issues for Investigation

RyzenFX
I'm a reliable contributor

@JohnBeaudin @Telek

 

I am opening a support ticket with Twitch as we speak. I'm hoping that they can find something that can initiate a conversation b/w the two parties. 

 

This issue should be fixed by now, but it hasn't 😕 It's super annoying to have to deal with this buffering.

Re: CODA-4582 - Open Issues for Investigation

JohnBeaudin
I'm a senior contributor

Let me know if you make any progress with the suppor ticket.

Re: CODA-4582 - Open Issues for Investigation

Mythen
I plan to stick around

@RyzenFX I agree let me know if there is anything I can do to help.  Its driving me nuts lol

 

Re: CODA-4582 - Open Issues for Investigation

Jeffj
I plan to stick around

I've been watching twitch all morning. How long do i have to wait to rerpoduce the clinet freezing forcing a refresh?

Re: CODA-4582 - Open Issues for Investigation

Mythen
I plan to stick around
@Jeffj try it during prime time. I don't watch much during the day. It might be a congestion thing

Re: CODA-4582 - Open Issues for Investigation

Jeffj
I plan to stick around

@Mythen wrote:
@Jeffj try it during prime time. I don't watch much during the day. It might be a congestion thing

Worked fine untill my modem started to lose sync again. I've got some other stuff going on. 

I asked @RogersDave to have a look via pm as i contacted support, and their Testing equipment is under matinence I guess?? During the business day? seems pretty unplanned to me.  

Re: CODA-4582 - Open Issues for Investigation

Mythen
I plan to stick around
I usually have a stream up watching in the evenings after about 6pm est. Even last night almost unwatchable. Video would completely freeze. Chat is ok.

Re: CODA-4582 - Open Issues for Investigation

JohnBeaudin
I'm a senior contributor

@Mythen

 

Same I been watching for the past 3 hours, and it's not freezing, but during the night... it's freezing every 10 mins

Re: CODA-4582 - Open Issues for Investigation

Telek
I plan to stick around

Would be awesome if Twitch had a debug console or log so that you could see why it dies.

 

I wonder if trying to broadcast might help. They have a broadcast inspector tool which monitors bandwidth, packets, etc. Might be able to catch whatever connection issues there are?

 

https://help.twitch.tv/customer/en/portal/articles/2420572-guide-to-broadcast-health-and-using-twitc...

Re: CODA-4582 - Open Issues for Investigation

Jeffj
I plan to stick around

@Telek wrote:

Would be awesome if Twitch had a debug console or log so that you could see why it dies.

 

I wonder if trying to broadcast might help. They have a broadcast inspector tool which monitors bandwidth, packets, etc. Might be able to catch whatever connection issues there are?

 

https://help.twitch.tv/customer/en/portal/articles/2420572-guide-to-broadcast-health-and-using-twitc...


You can set up a boradcast test thats not public.  Ive done it before

 

Re: CODA-4582 - Open Issues for Investigation

Mythen
I plan to stick around

Oh one thing I forgot to mention.  We do stream from time to time and have no issues at all.  But if me or my wife watches the other while streaming it freezes.  Makes no sense

 

 

Re: CODA-4582 - Open Issues for Investigation

MegnaGaming
I plan to stick around

@Mythen are you using Chrome? Try in incognito mode and see if it still freezes. It may be linked to an extension.

Re: CODA-4582 - Open Issues for Investigation

Triple_Helix
I plan to stick around

.27 firmware is working great for me!

 

 

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Re: CODA-4582 - Open Issues for Investigation

Mythen
I plan to stick around
Swapped my modem on Friday and have been waiting since then to get the.27 firmware. On .26T2 currently. 7 business days they say. Paitence is not my strong suit lol

Re: CODA-4582 - Open Issues for Investigation

Jeffj
I plan to stick around

@RogersDave Hope you can have a look and give some help here.

Going on 7 days now this is what my Logs look like daily

No. Time Type Priority Event
1 05/09/2017 18:36:45 82000300 critical Ranging Request Retries exhausted;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=00:17:10:93:6b:90;CM-QOS=1.1;CM-VER=3.1;
2 05/09/2017 18:36:45 82000600 critical Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=00:17:10:93:6b:90;CM-QOS=1.1;CM-VER=3.1;
3 05/09/2017 18:36:45 85010200 warning TCS Partial Service;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=00:17:10:93:6b:90;CM-QOS=1.1;CM-VER=3.1;
4 05/09/2017 18:37:01 82000500 critical Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=00:17:10:93:6b:90;CM-QOS=1.1;CM-VER=3.1;
5 05/09/2017 18:37:02 82000300 critical Ranging Request Retries exhausted;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=00:17:10:93:6b:90;CM-QOS=1.1;CM-VER=3.1;
6 05/09/2017 18:37:02 82000600 critical Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=00:17:10:93:6b:90;CM-QOS=1.1;CM-VER=3.1;
7 05/09/2017 18:37:18 82000500 critical Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=00:17:10:93:6b:90;CM-QOS=1.1;CM-VER=3.1;
8 05/09/2017 18:37:19 82000300 critical Ranging Request Retries exhausted;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=00:17:10:93:6b:90;CM-QOS=1.1;CM-VER=3.1;
9 05/09/2017 18:37:19 82000600 critical Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=00:17:10:93:6b:90;CM-QOS=1.1;CM-VER=3.1;
10 05/09/2017 18:38:03 82000500 critical Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=00:17:10:93:6b:90;CM-QOS=1.1;CM-VER=3.1;
11 05/09/2017 18:38:13 82000300 critical Ranging Request Retries exhausted;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=00:17:10:93:6b:90;CM-QOS=1.1;CM-VER=3.1;
12 05/09/2017 18:38:13 82000600 critical Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=00:17:10:93:6b:90;CM-QOS=1.1;CM-VER=3.1;
13 05/09/2017 18:39:52 82000500 critical Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=00:17:10:93:6b:90;CM-QOS=1.1;CM-VER=3.1;
14 05/09/2017 18:39:57 84000500 critical SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=00:17:10:93:6b:90;CM-QOS=1.1;CM-VER=3.1;
15 05/09/2017 18:40:03 84020200 warning Lost MDD Timeout;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=00:17:10:93:6b:90;CM-QOS=1.1;CM-VER=3.1;
16 05/09/2017 18:40:28 82000400 critical Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=00:17:10:93:6b:90;CM-QOS=1.1;CM-VER=3.1;
17 05/09/2017 18:46:05 84020200 warning Lost MDD Timeout;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=00:17:10:93:6b:90;CM-QOS=1.1;CM-VER=3.1;
18 05/09/2017 18:48:54 82000200 critical No Ranging Response received - T3 time-out;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=00:17:10:93:6b:90;CM-QOS=1.1;CM-VER=3.1;
19 05/10/2017 02:26:09 90000000 warning MIMO Event MIMO: Stored MIMO=1 post cfg file MIMO=-1;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=00:17:10:93:6b:90;CM-QOS=1.1;CM-VER=3.1;
20 05/10/2017 17:14:03 82000200 critical No Ranging Response received - T3 time-out;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=00:17:10:93:6b:90;CM-QOS=1.1;CM-VER=3.1;

Talking to support I have been told such things as, there is nothing wrong, Their Tools to check the Node and my connection are down for service and "You should use wired connections instead of wireless, that will solve your problems"

 

My connection starts to lag out, i get packet loss and then the modem reboots its self eventually. 

 

last_864000.png

Re: CODA-4582 - Open Issues for Investigation

Is there something specific I need to do in order to upgrade to .27?

 

Currently using:

 

Software Version

2.0.10.26T2

 

 

Re: CODA-4582 - Open Issues for Investigation

@mcianfarani  

 

To signup for the trial firmware if you're interested, send a private message to @CommunityHelps.  Follow that link to the public page for @CommunityHelps and then select the link on the right hand side to "Send this user a private message" to navigate to the message composition page. It will already be addressed.

Fill in the title: CODA-4582 Modem Firmware Trial

In the text area, add your modems: MAC Address
Serial Number
Modem Model: CODA-4582

The first two can be found in the Status page when you log into the modem or on the back of the modem. They can be copied from the Status page and pasted into the message.

When you're logged into the forum, watch for a number overlaid on your avatar at the top right hand corner signifying a response from one of the moderators. Select that link and follow it down to your message inbox. You should see a disclaimer that has to be acknowledged prior to loading the latest version of trial firmware.

Keep an eye open on this thread or the Open Issues thread for any particular requirements for rebooting or running a factory reset on a modem with trial firmware loaded. Usually there are no special instructions, but, that can happen occasionally. For V2.0.10.27, you can reboot or restart the modem after disconnecting the modem power and the modem will remain at V2.0.10.27. If you run a factory reset the modem will revert back to V2.0.10.26T2 which is the current network wide version for the CODA-4582.

 

Re: CODA-4582 - Open Issues for Investigation

Datalink
Resident Expert
Resident Expert

@Jeffj can you log into the modem, navigate to the STATUS .... DOCSIS WAN page, copy the downstream and upstream tables and paste them into a post.  Maybe the signal levels will indicate something??

 

Are you using VPNs by any chance? 

 

Whats the target for the pingplot?  Just wondering why its so high to start with? 

Re: CODA-4582 - Open Issues for Investigation

Jeffj
I plan to stick around

@Datalink wrote:

@Jeffj can you log into the modem, navigate to the STATUS .... DOCSIS WAN page, copy the downstream and upstream tables and paste them into a post.  Maybe the signal levels will indicate something??

 

Are you using VPNs by any chance? 

 

Whats the target for the pingplot?  Just wondering why its so high to start with? 


I'm using DSL reports smoke ping servers. Mishigan, Cali and Kentucky. they all show similar results, that specific screen shot id from Michigan. And as it shows all my woes start on thursday with peppered points of issues, and multiple self reboots by the modem since thursday. 

 

I've contacted support twice now where they asure me everything is fine althought they "cannot test my modem or node due to their utility being doen for matinence."  And I was suggested that i should not use wireless but used a wired connection and it would solve all my problems... My connection health testing machine and main PC are wired, so im not sure what to say about that even though i know thats not a proper answer/suggestion lol.

 

So after two failed attempts at support to even suggest a tech look at it (which has already been done in Feb when this same thing happened) I got no where and am waiting for Super Dave to have a look at my Modem on his end and give suggestions. 

 

Downstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDSignal noise ratio (dB)
1651000000256QAM0.1001633.487
2561000000256QAM0.000233.834
3567000000256QAM0.200333.957
4573000000256QAM-0.200433.957
5579000000256QAM0.100533.834
6585000000256QAM-0.200633.957
7591000000256QAM0.000733.834
8597000000256QAM-0.400833.834
9603000000256QAM-0.500933.834
10609000000256QAM-0.2001033.834
11615000000256QAM-0.1001133.957
12621000000256QAM-0.2001233.487
13633000000256QAM0.1001333.957
14639000000256QAM0.1001433.834
15645000000256QAM0.0001533.377
16555000000256QAM0.100133.834
17657000000256QAM0.2001733.834
18663000000256QAM0.1001833.834
19669000000256QAM0.1001933.834
20675000000256QAM-0.3002033.487
21681000000256QAM-0.5002133.487
22687000000256QAM-0.7002233.377
23693000000256QAM-0.8002333.487
24699000000256QAM-0.9002433.377
25705000000256QAM-1.2002533.377
26711000000256QAM-0.8002633.487
27717000000256QAM-1.4002733.487
28723000000256QAM-1.2002833.377
29825000000256QAM-2.9002932.585
30831000000256QAM-3.0003032.585
31837000000256QAM-3.4003132.321
32843000000256QAM-3.7003232.321
OFDM Downstream Overview
ReceiverFFT typeSubcarr 0 Frequency(MHz)PLC lockedNCP lockedMDC1 lockedPLC power(dBmv)
0NANANONONONA
14K290600000YESYESYES0.799999
Upstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDBandwidth
123700000ATDMA - 64QAM33.00056400000
238595824ATDMA - 64QAM37.25063200000
330596000ATDMA - 64QAM32.75046400000