@User1445713 after a firmware update, you should as a minimum do a modem restart. Pull the power plug from the electrical socket, wait for 30 seconds and plug it back in to force a restart. If you find that the restart doesn't do the job, run a factory reset.
Hello Community,
I am sorry that I haven’t been able to answer all your questions in the last 3 weeks but I have been really busy trying my best to make everybody’s Internet better 🙂
I know that some of you are getting lower speeds than they expected and unfortunately, I can’t help much at this point. There is a lot going on right now on the network and performing a single complete review of a speed complaint can take me between 30 minutes to an hour. I simply can’t handle this at the moment (my time is better used addressing global issues than localized ones right now).
I am still trying to quickly go through the last 2 weeks of messages on the forum but that is a lot so I may not catch everything. I will post CODA-4582 and DOCSIS 3.1 specific updates in the CODA thread here. On the CGN3 series (AMR, AMF, ACSRM, ACR, 3552), we are still working on an updated release that will improve latency stability and fix the uplink speed issue that was introduced in 4.5.8.27 (especially on the CGNM-3552). That release should be 4.5.8.29 and I soon as I have it, I will push it out to participants of the firmware trial program. We are also working on other fixes that may make it into that release.
As always, you can keep an eye on the release notes in the 2nd message of this thread. I try to update it as information becomes available to me.
Dave
My guess is that the MDD Timeout resulted in the modem going offline. Have a look at the following page, paying attention to the MAC Domain Descriptor (MDD):
https://volpefirm.com/docsis-3-0-cable-modem-registration/
From another linked page:
MDD messages are periodically transmitted on all Downstream Channel(s) of DOCSIS 3.0 CMTSs. The MDD message contains the Downstream Channel ID of the Primary Downstream Channel for the CMTS sending the MDD message. The value of the MDD occurs when a cable modem locks onto a non-primary capable downstream channel, the cable modem will read the MDD and know immediately where to tune to in order to lock on to the Primary Downstream Channel. The MDD can also be used for load balancing cable modems in a DOCSIS 3.0 network. The MDD also contains additional information for the cable modem, such as available downstream channels, available upstream channels, upstream frequency range and more.
I suspect that for some reason, the modem is losing track of the Primary Downstream Channel, goes offline and as a result has to go thru the entire modem registration process. I had that happen to my 4582 at some point as well. This also makes me wonder if the CMTS is changing the Primary Downstream Channel with the result that the modem goes offline and has to register with the CMTS again.
@joker2168, try running a modem restart. Pull the power, wait for 30 seconds and plug it back in to see if that resolves the missing channel issue. You have DOCSIS 3.1 in operation, and you're also noticing inconsistent speeds. That speed issue is being addressed at the present time by Rogers, Hitron, Intel and Casa. Hopefully there will be a solution found fairly soon.
Does your modem have a black dot on the back of it near the power cable?
You could also try an experiment after the restart, and that is to shut down the 2.4 Ghz wifi if it happens to be running and restart the modem once again.
The last resort measure would be to run a factory reset and check the channel situation after the modem reboots.
I'm still running the original CODA-4582 as well and have only seen one MDD Timeout from what I remember. I keep the modem parked several feet from my router and haven't seen any issues with it, but, my CMTS is still on DOCSIS 3.0 at the present time.
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