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

toolcubed
I'm a Senior Contributor

Cool, thanks @RogersDave!

Re: CODA-4582 - Open Issues for Investigation

JohnBeaudin
I'm a Senior Contributor

Thanks @RogersDave

Re: CODA-4582 - Open Issues for Investigation

my modem rebooted but the firmware is still at .23

Re: CODA-4582 - Open Issues for Investigation

@RogersDave here is my first test on .24 and jitter still high , here is a look at my down and up signals since .24 @RogersDave

 

Untitledfeb16.png

 

1 591000000 256QAM 6.500 7 38.983
2 567000000 256QAM 6.500 3 40.366
3 573000000 256QAM 6.200 4 38.983
4 579000000 256QAM 6.200 5 38.983
5 585000000 256QAM 6.700 6 40.366
6 561000000 256QAM 6.700 2 40.946
7 597000000 256QAM 6.500 8 38.983
8 603000000 256QAM 6.800 9 40.946
9 609000000 256QAM 7.100 10 38.983
10 615000000 256QAM 7.200 11 38.983
11 621000000 256QAM 7.300 12 40.366
12 633000000 256QAM 7.000 13 38.983
13 639000000 256QAM 7.400 14 38.983
14 645000000 256QAM 7.500 15 38.983
15 651000000 256QAM 7.400 16 38.983
16 657000000 256QAM 7.500 17 40.366
17 663000000 256QAM 7.300 18 38.605
18 669000000 256QAM 7.600 19 38.983
19 675000000 256QAM 7.400 20 38.605
20 681000000 256QAM 6.900 21 38.983
21 687000000 256QAM 6.700 22 38.983
22 693000000 256QAM 6.500 23 38.983
23 699000000 256QAM 6.600 24 38.605
24 705000000 256QAM 6.500 25 38.983
25 711000000 256QAM 6.100 26 38.605
26 717000000 256QAM 6.100 27 38.983
27 723000000 256QAM 6.200 28 38.605
28 825000000 256QAM 5.500 29 37.636
29 831000000 256QAM 5.200 30 37.636
30 837000000 256QAM 5.000 31 37.636
31 843000000 256QAM 5.300 32 37.636
32 555000000 256QAM 6.800 1 40.366

OFDM Downstream Overview
Receiver FFT type Subcarr 0 Frequency(MHz) PLC locked NCP locked MDC1 locked PLC power(dBmv)
0 4K 275600000 YES YES YES 3.799999
1 NA NA NO NO NO NA

Upstream Overview
Port ID Frequency (MHz) Modulation Signal strength (dBmV) Channel ID Bandwidth
1 30596000 ATDMA - 64QAM 34.250 1 6400000
2 38595824 ATDMA - 64QAM 37.750 3 3200000
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

Re: CODA-4582 - Open Issues for Investigation

Hwaiting
I Plan to Stick Around

Received .24 and for the first I'm seeing missing channels on my original non-black dot CODA.  Did a soft reboot and still missing.  I guess it's time to swap mine?

Re: CODA-4582 - Open Issues for Investigation


@Hwaiting wrote:

Received .24 and for the first I'm seeing missing channels on my original non-black dot CODA.  Did a soft reboot and still missing.  I guess it's time to swap mine?


I just ran an interference test on your modem and yes it should be replaced.

Re: CODA-4582 - Open Issues for Investigation

joker2168
I Plan to Stick Around

Just received .24 on my modem. So far so good. WIreless, eto ports, and speed are all very good.

Re: CODA-4582 - Open Issues for Investigation


@lethalsniper wrote:

@RogersDave here is my first test on .24 and jitter still high , here is a look at my down and up signals since .24

 


The problem in your area is still high usage on the uplink direction which causes higher jitter.

Re: CODA-4582 - Open Issues for Investigation

jmacd27
I've Been Here Awhile

Dave,

 

I was having the latency build up over time issue and you were monitoring my modem a few weeks ago, it has been much better the last week or so. But the last 5 or so days my speeds have gone down to 80 down and 25 up. I used to get speeds around 700-850 up and 30 down. I have chatted with Rogers tech chat a couple days ago, but nothing has changed. Is there anything you can see that is causing this?

 

Thanks for you help on the forums.

Re: CODA-4582 - Open Issues for Investigation

mikeepolmic
I Plan to Stick Around

Firmware .19 - STILL having to reboot every 4-6 hours as I lose internet connection, both wired and wireless ... by the way, do these specs look right?

Downstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDSignal noise ratio (dB)
1621000000256QAM-7.8001238.983
2561000000256QAM-9.500237.356
3567000000256QAM-9.600337.356
4573000000256QAM-9.900437.356
5579000000256QAM-9.500537.636
6585000000256QAM-9.300637.636
7591000000256QAM-9.200738.605
8597000000256QAM-8.300838.605
9603000000256QAM-7.700938.605
10609000000256QAM-8.4001038.605
11615000000256QAM-8.3001138.605
12555000000256QAM-8.400138.605
13633000000256QAM-8.5001338.605
14639000000256QAM-7.7001438.605
15645000000256QAM-7.5001538.605
16651000000256QAM-7.3001638.983
17657000000256QAM-8.1001738.605
18663000000256QAM-7.8001838.605
19669000000256QAM-7.4001938.605
20675000000256QAM-8.6002038.605
21681000000256QAM-9.2002138.983
22687000000256QAM-10.0002237.636
23693000000256QAM-10.0002337.636
24699000000256QAM-11.0002437.636
25705000000256QAM-11.9002537.356
26711000000256QAM-11.8002636.387
27717000000256QAM-12.5002736.610
28723000000256QAM-13.1002835.595
29825000000256QAM-22.7002928.191
30831000000256QAM-23.1003027.814
32843000000256QAM-24.1003226.702
OFDM Downstream Overview
ReceiverFFT typeSubcarr 0 Frequency(MHz)PLC lockedNCP lockedMDC1 lockedPLC power(dBmv)
0NANANONONONA
14K275600000YESYESYES-5.700001
Upstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDBandwidth
138595785ATDMA - 64QAM40.75033200000
230596000ATDMA - 64QAM38.25016400000
323700000ATDMA - 64QAM37.75026400000
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

Lumute
I Plan to Stick Around

My connection went down last night for 15 min and I got excited as I have been waiting for 3.1 deployed in my area for a while now, was quite dissapointed to see it came back online but no 3.1.

 

About an hour ago decided to reboot my router (unplug power way) and when it cambe back there it was, 3.1!!! this was on .23 (original).

 

So you guys still waiting for 3.1, give a reboot a try as you may already have it but the modem never rebooted, I see a bunch of these in the logs before the reboot:

 

202/16/2017 06:02:2082000900warningB-INIT-RNG Failure - Retries exceeded;CM-MAC=a8:4e:3f:XX:XX:XX;CMTS-MAC=00:17:10:XX:XX:XX;CM-QOS=1.1;CM-VER=3.1;
302/16/2017 06:03:4382000200criticalNo Ranging Response received - T3 time-out;CM-MAC=a8:4e:3f:XX:XX:XX;CMTS-MAC=00:17:10:XX:XX:XX;CM-QOS=1.1;CM-VER=3.1;

 

BTW, The momdem just rebooted again and I got .24.

 

I never had the missing channels or speed degradation and running on original non black dot modem, but my speed has always been kinda bad averaging 300/25. Just ran some tests and now getting 650/38 which I'm happy with for now, all channels are still there too...

Re: CODA-4582 - Open Issues for Investigation

Lumute
I Plan to Stick Around

BTW, I'm located at Heartland, Mississauga.

Re: CODA-4582 - Open Issues for Investigation

HKPolice1
I Plan to Stick Around

Thank you so much for .24 firmware! I can now download @ around 80% of max downstream ~700Mb/s+ without causing ping spikes to over 300ms! CMTS latency jumps from 8-9ms to around 30ms while downloading whereas with previous firmwares it would cause packet loss and spikes to over 300ms when downstream is above ~300Mb/s.

 

Edit: spoke too soon, it's back to the old spikey behaviour again when downloading 😞

Re: CODA-4582 - Open Issues for Investigation

jjunge
I Plan to Stick Around

@RogersDave  Dave - I'm still unable to get any of my wired devices to connect including my VOIP. Also, I'm now missing channel 20 with a black dot CODA - can you tell me if this is a fluke or requires a modem replacement? Also, Can you do me a favour and put me back on .19 so i can see if that resolves this ethernet issue?

 

Thank you.

Jason

Re: CODA-4582 - Open Issues for Investigation

ChadhaR
I've Been Around

Can you enable VPN on a CODA-4582 modem?

Re: CODA-4582 - Open Issues for Investigation


@jjunge wrote:

@RogersDave  Dave - I'm still unable to get any of my wired devices to connect including my VOIP. Also, I'm now missing channel 20 with a black dot CODA - can you tell me if this is a fluke or requires a modem replacement? Also, Can you do me a favour and put me back on .19 so i can see if that resolves this ethernet issue?

 

Thank you.

Jason


Your channel running at 573 MHz seems to be impacted. I would therefore recommend a replacement.

 

I will roll back .19 for you.

Re: CODA-4582 - Open Issues for Investigation


@mikeepolmic wrote:

Firmware .19 - STILL having to reboot every 4-6 hours as I lose internet connection, both wired and wireless ... by the way, do these specs look right?


Your modem is completely out of spec and will require a technician's visit to address this.

 

Regarding the need for reboot every 4-6 hours, the new firmware might greatly help with that. To join the trial, send a private message to @CommunityHelps and make sure to include your modem MAC address and serial number.

 

Dave

Re: CODA-4582 - Open Issues for Investigation

Hwaiting
I Plan to Stick Around

@RogersDave wrote:

@Hwaiting wrote:

Received .24 and for the first I'm seeing missing channels on my original non-black dot CODA.  Did a soft reboot and still missing.  I guess it's time to swap mine?


I just ran an interference test on your modem and yes it should be replaced.


Thanks for the quick reply.  Just came back from swapping.  I do see all channels now like before.  It's still on .13 out of the box so I'll check it again once it updates to .24.  Thanks again.

Re: CODA-4582 - Open Issues for Investigation

jjunge
I Plan to Stick Around
@RogersDave .19 brought ethernet connections back to life - there must be a bug. I will swap modems some time this weekend.

Re: CODA-4582 - Open Issues for Investigation

Telek
I Plan to Stick Around

@Hwaiting wrote:

Thanks for the quick reply.  Just came back from swapping.  I do see all channels now like before.  It's still on .13 out of the box so I'll check it again once it updates to .24.  Thanks again.


@don't forget to send a message to @CommunityHelps with your updated MAC address and serial number.

Re: CODA-4582 - Open Issues for Investigation

Telek
I Plan to Stick Around

@ChadhaR wrote:

Can you enable VPN on a CODA-4582 modem?


Best to start a new thread for this question.