CODA-4582 - Open Issues for Investigation

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Network Architect
Network Architect
Posts: 611

Re: CODA-4582 - Open Issues for Investigation


@wellrichk wrote:

Thanks Dave. I am not too tech savvy but how do I manually set the channel?

Modem is upright and lots of space around it. Does Rogers upload/download the firmware automatically or do I need to activate it when it is available?

 

Keith


On your computer while connected to your home network, follow these steps:

 

1- Go to https://192.168.0.1

2- Username is cusadmin and password is your WiFi password

3- Click in the top menu on Wireless

4- Click on 5G

5- Set the Wireless channel from Auto to 149-153-157-161

6- Click on Save Changes at the bottom of the page

 

If you were connected on WiFi while performing these changes, you may get disconnected momentarily.

 

Dave

 

I'm a Reliable Contributor
Posts: 577

Re: CODA-4582 - Open Issues for Investigation

CODA-4582 On 2.0.10.20

100u Plan

 

Speedtest #1 (Limited at 100Mbps)

 

Result: https://www.dslreports.com/speedtest/8752262

 

Getting a good bufferbloat of B

 

Speedtest #2 w/Speedboost

 

Result: http://www.dslreports.com/speedtest/8752468

 

Bad bufferbloat of F

 

 

@RogersDave You are correct, the bufferbloat is caused by the speedboost technology, but isn't his only reported on the CODA-4582, or has it been reported also on the CGN3ACSMR?

I Plan to Stick Around
Posts: 15

Re: CODA-4582 - Open Issues for Investigation


@RogersDave wrote:

@LSTA@mikeepolmic@Dragus@traghipp@hood

 

All of you reported experiencing speed degradation over time (somewhere between 30 minutes to 12 hours). One question asked by Hitron is if this degradation occurs only using a Wired connection or if it occurs on both WiFi and Wired?

 

Also, did any of you run firmware version 2.0.10.13 or 2.0.10.14 for a couple of days without experiencing this issue (was it introduced by 2.0.10.19)?

 

Thanks

 

Dave


Hi Dave (and community),

 

So the techs from Rogers & Hitron stopped by. Since I last restarted my modem at 10pm the night before, it was unlikely we'd see issues this morning, and we didn't. I'll shoot Hitron an email when I notice the speeds drop again (probably tomorrow morning or mid-afternoon) and they can remote in to a PC I set up to troubleshoot via telnet.

 

There's apparently a long list of things Hitron would like to check when it reoccurs. I'll keep you and the community posted as to the results.

 

To clarify, for those who haven't seen my PMs as @RogersDave has, I kept Wi-fi disabled on the modem, but speeds would vary from 940-960mbps when first restarted to 0.2-0.8mbps at the worst. They'd flip pretty suddenly, meaning I'd have 600-800mbps over Wi-Fi/Ethernet, then after a few hours away, I'd come back to 5mbps and YouTube would be buffering constantly. The only thing that would (instantly) fix it was to restart the modem.

 

Also, the dropped packets are driving me nuts, but that's been less aggrevating so far than the bandwidth fluctuations. Looking forward to getting this (and any other issues) fixed asap; happy to help any way I can.

 

 

Louis.

I Plan to Stick Around
Posts: 103

Re: CODA-4582 - Open Issues for Investigation

@RogersDave I completed the buffer bloat test. (On 1G/50 Plan). I ran the test 3 times when hardcoding the 'Down megabit/sec" to 1000. Ran this test 3 times with the following results

 

Test 1 (930/31) - http://www.dslreports.com/speedtest/8752386

Test 2 (838/25) - http://www.dslreports.com/speedtest/8752648

Test 3 (877/22) - http://www.dslreports.com/speedtest/8752724

 

I ran the test one final time with the default settings with the following result

Test 1 (817/23) - http://www.dslreports.com/speedtest/8752878

Highlighted
I've Been Here Awhile
Posts: 3

Re: CODA-4582 - Open Issues for Investigation

That does the trick! Speed is over 50 Mbps  which is a hige improvement.

 

Thanks,

 

Keith

Network Architect
Network Architect
Posts: 611

Re: CODA-4582 - Open Issues for Investigation


@eddiethefunnyon wrote:

 

@RogersDave You are correct, the bufferbloat is caused by the speedboost technology, but isn't his only reported on the CODA-4582, or has it been reported also on the CGN3ACSMR?


The problem is not so much that speedboost causes bufferbloat but the fact that the DSLReports speedtest does not correctly handle this case. Ultimately, we could disable speedboost and it would make the bufferbloat results look better. On the other hand, there is a benefit to this feature to better handle short bursts of data.

 

We always had reports of bufferbloat issues but all the other modems using Puma 6 chipsets were severely impacted by other latency impairment so there wasn't really any effort put into addressing the situation.

 

Dave

Network Architect
Network Architect
Posts: 611

Re: CODA-4582 - Open Issues for Investigation


@Hybrid_Noodle wrote:

@RogersDave I completed the buffer bloat test. (On 1G/50 Plan). I ran the test 3 times when hardcoding the 'Down megabit/sec" to 1000. Ran this test 3 times with the following results

 

Test 1 (930/31) - http://www.dslreports.com/speedtest/8752386

Test 2 (838/25) - http://www.dslreports.com/speedtest/8752648

Test 3 (877/22) - http://www.dslreports.com/speedtest/8752724

 

I ran the test one final time with the default settings with the following result

Test 1 (817/23) - http://www.dslreports.com/speedtest/8752878


This is in line with what I am seeing on my modem on a 1G plan (where the speedboost feature is disabled). Most of my tests were always resulting in a score of B or C for bufferbloat while lower tiers were often seeing results of F.

I Plan to Stick Around
Posts: 205

Re: CODA-4582 - Open Issues for Investigation

@RogersDave 

YOur suggestion to fix the downlaod speed helps the download BufferBloat it seems a fair bit. But the upload is still pretty high.  Instead of an F i get a C now. at 250Mbps down 

At 100 Mbps down i can get B bufferbloat, THe downstream is always GReat, upstream still pegs the buffr bloat graph on occasion. 

I'm a Reliable Contributor
Posts: 577

Re: CODA-4582 - Open Issues for Investigation

I don't really think that disabling speedboost would be advantageous in anyway despite it showing better results in DSL Reports' speed test.

I Plan to Stick Around
Posts: 43

Re: CODA-4582 - Open Issues for Investigation


@RogersDave wrote:

@Coccino wrote:

So I bought a TP-Link Archer C2600 but have not set it up. Is the issue on the C2600 as a whole or is it selected? I have yet to find time to actually install it on my end so I may just wait it out for the *.21 firmware


I believe the issue affects the stock firmware of the TP-Link C2600. Running DD-WRT or OpenWRT would likely work.

 

Dave


What's with CODA (bridge mode) that prevents the router in getting an IP address? It works fine with the previous Gigabit modem and when CODA is not in bridge mode. Isn't it if running the router in DD-WRT or OpenWRT will cut the speed in half?