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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

Jeffj
I plan to stick around

@RogersDave wrote:

@Jeffj wrote:

@RogersDave

 

This is still happening, I know i talked to you about the latency weirdness vs being on a VPN  before. Here is a pictrure of it.

 

Untitled.png


Thanks, I will replicate this and push it up. Can you provide associated screenshots of your speedtests on and off VPN?

 

I will send you a PM with additional information on where to send these.

 

Dave


Will collect the data you need and send it along!

Re: CODA-4582 - Open Issues for Investigation

KyleW1988
I plan to stick around
My issue is ever since the modem updated to .24 I can hardly ever play games that are P2P. I got the modem brand new and it was only using IPv4 then when it updated and IPv6 showed up that's when my troubles began. Its only P2P gaming issues. I can play different game modes in the same game that use a server to host that game mode instead of P2P and it works fine. The best advice I've got from Rogers is you could buy your own router and the best advice from Microsoft was contact your ISP. It's been painful the last 2 weeks since the modem updated itself.

My buddy a few streets over has the exact same problem. We both have this modem with Rogers. We can't even connect to each other. If anyone knows what's causing this Problem with P2P I'd love to know.

Re: CODA-4582 - Open Issues for Investigation

RyzenFX
I'm a reliable contributor

@KyleW1988 Are you and your friend trying to connect to each other through a PC game or console game? If the game uses IPv6 for P2P, you or your friend's IPv6 can be filtered if you're playing on PC. 

Re: CODA-4582 - Open Issues for Investigation

14N
I plan to stick around

My max download never went beyond 400mbps, average 200mbs and upload was 32-34mbps and ping is below 15 ms even with the old modem non-CODA, I changed the modem to CODA on December. I never changed it to the one with black dot until a technician came to check my speed last Sunday. He changed first the modem with the black dot to check if I can go beyond 400mbps but he was not able to test the speed since the new modem could not authenticate due to issue with Roger's server. I did not change it back to my previous modem (no black dot) hoping this new modem is better. The speed still the same for 2 days and after that it went downhill even with reboot or reset speed is below 100mbps or at times below 50mbps and upload is below 2mbps, ping is 25-50ms.  My previous CODA (no black dot) was much better upload is consistent at 32-34 mbps, and download is between 200-350mbps most of the time. I'll exhange the modem tonight hoping I'll get a better one. firmware is .24 and all 32 channels are okay

Re: CODA-4582 - Open Issues for Investigation

KyleW1988
I plan to stick around
 

Re: CODA-4582 - Open Issues for Investigation

KyleW1988
I plan to stick around
No we're on the Xbox one

Re: CODA-4582 - Open Issues for Investigation

I'm having the same issue as you. These Hiltron modems not great for gaming Rogers has a lot of work to do , I heard if you buy your own router and disable IPv6 it might work ,and heard there are still a lot of gamers who still have IPv4 and conflict with IPv6 users

Re: CODA-4582 - Open Issues for Investigation

KyleW1988
I plan to stick around
It's just painful bud. I hope Rogers is going hard to iron this out.

Re: CODA-4582 - Open Issues for Investigation

Just as a reminder, @lethalsniper, Dave has indicated that the node which your modem connects to suffers from congestion, so, it won't matter what modem you're running, Rogers or TPIA, you will run into the same issue.  The question is, when will that be taken care of thru a node split?  

 

As far as XBox, if that's what you're playing on, Microsoft staff have indicated in probably more than presentation, that there is no crossover between the IPV4 and IPV6 world.  At a minimum, to play in the IPV6 world, if you don't have IPV6, you would have to be running Teredo Tunneling, and I thought that I had seen on a presentation that Microsoft was going to shut down the Teredo Tunneling servers, so, its going to be either IPV4 or IPV6 down the road.  

Re: CODA-4582 - Open Issues for Investigation

KyleW1988
I plan to stick around
Well hopefully someone does something. What's going on right now isn't working. The teredo tunnelling port that is automatically opened in the modem seems like it's there just for fun. I can turn off that port being forwarded and it makes no difference whether it's on or off for me.

Re: CODA-4582 - Open Issues for Investigation

Breadwinka
I plan to stick around

@RogersDave I can also confirm @Jeffj findings. First part is without vpn second part is with.  The spike from the VPN seemed to be only during the upload portion as well. I will also try by limiting the bandwith with Rogers to see if it makes a difference.

 

Capture.PNG

Capture2.PNG

 

Here is some locked a 100mpbs Full duplex

Capture4.PNGCapture3.PNG

Re: CODA-4582 - Open Issues for Investigation

It's funny how Rogers has not fixed my our node issue in my area yet due to cold weather @RogersDave but what's Anoying me is its been like this for 4 months now and it's funny how coming home from work don't I see bell digging and doing wiring repairs just a block away from me it just shows me how much Rogers cares about there customers so don't tell me it's the weather and the ground is frozen and they can't fix the node so please explain how on earth is bell digging ?

Re: CODA-4582 - Open Issues for Investigation

Jeffj
I plan to stick around

@Breadwinka wrote:

@RogersDave I can also confirm @Jeffj findings. First part is without vpn second part is with.  The spike from the VPN seemed to be only during the upload portion as well. I will also try by limiting the bandwith with Rogers to see if it makes a difference.

 

Capture.PNG

Capture2.PNG


Ive sent off some info to Dave and he is working on reproducingi t so it can be passed onto the Modem enginers 

Re: CODA-4582 - Open Issues for Investigation

Pejmank
I'm here a lot

@RogersDave

Have download speed issue since I moved to Gig. Is there a way anyone in this forum can help me ?

I'm running out of options and still get 300mb average and max 450mb download!!!

 

Tnx

Re: CODA-4582 - Open Issues for Investigation

@KyleW1988 I think that if you turn off UPNP on the modem, clear out any port forwarding rules that you don't want, and then reboot the modem, you shouldn't see that Teredo Tunnel appear in the modem after the reboot.  The only reason it would show up in the modem would be if UPNP was enabled and some device on the network requested it.  

Re: CODA-4582 - Open Issues for Investigation

QueJoder
I plan to stick around

@RyzenFX wrote:

@lethalsniper All the PUMA 6 modems will be receiving the fix which should fix alot of it's latency issues. This includes the CGNM-3552, CGN3ACSMR, CGN3ACR, and CGN3.

UNQUOTE

Which of all those modems are Gigabi capable?


Re: CODA-4582 - Open Issues for Investigation

JohnBeaudin
I'm a senior contributor

@RogersDave

 

Testing .26 tonight in online games. ( Still on DOCSIS 3.0)

 

Tested with CSGO on chicago, usually get 62 and then slowly buildup over time to 75 ms.

 

So far I get around 49-55 ping and buildup over time is not happening , it just stay within the 46-55 range, I am not sure if am I just extremely lucky but it's the first time it happens for years.

 

I will keep testing to see if it last, but I am pretty confident that this time we are heading in the right direction, when I get D3.1 and you completely fix the UDP in the next firmware.. sad I leave so far cuz I'd pay you beer! haha

Re: CODA-4582 - Open Issues for Investigation

KyleW1988
I plan to stick around
Wouldn't disabling UPNP cause a bunch of problems for everything else? If I manually turn off the port it shouldn't effect anything else other than that port. As I stated before this hasn't made a difference to me. Rogers implementing IPv6 before they had all the problems worked out was a mistake. We the consumers suffer because they wanted to be ahead of the game.

Re: CODA-4582 - Open Issues for Investigation

RyzenFX
I'm a reliable contributor

@JohnBeaudin How's Dota and the other games you play?

Re: CODA-4582 - Open Issues for Investigation

JohnBeaudin
I'm a senior contributor

@RyzenFX

 

Only tried csgo and ark so far, 27-31ms on ARK.

 

Will update when I try other games.

Re: CODA-4582 - Open Issues for Investigation

JohnBeaudin
I'm a senior contributor

** EDIT** @RogersDave

 

Looks like I just got lucky the rest of the games .. it started to spike goign as high as 90 ms and even stay there for quite a while. So no real improvements in online gaming yet. As for the modem reboot I will give update in a few days to see if it will last usually it never stay on without reboot for more than 24h