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Forum Discussion
CAX80 Randomly Loosing Downstream Lock - MDD message timeout?
Hi everyone, I recently upgraded my internet through RCN to gigabit (940/25mbps) and for that decided to get the RAX80 router which seems like quite a beast. Unfortunately though im running into an i...
Issue happened again this morning :smileysad:. Left the error state going when I called RCN and the tech told me she could see the device operating in a "partial mode". I power cycled the device and then had the tech reprovision it. She confirmed that there were no signal strength issues from the diagnostic tooling on her end which also coincides with what I'm seeing. Since the reprovisioning I'm actually seeing more consistent and faster downstream speeds then before. Not sure what exactly happened before, but fingers crossed maybe this will work.
An interesting note from when I set the device up initally with RCN: After provisioing the device the tech had me pull the power from the device each time, despite the device restarting on it's own. The tech today did not have me do this, but offered some insight as to why the other tech might have had me do this... Apparently with the DOCSIS 3.1 standard, the cable modem could take an upwards of an hour to come back online after provisioning, and they had found a trick to this was to power cycle the device to get it to come back online faster. This makes no sense to me because if the device resets on it's own after provisioning, why bother pulling the power again? I have a feeling this might have corruped a provisioning perameter as i had to do this a couple times due to the first tech entering my MAC address into the system incorrectly.
If this doesn't work I have a feeling it's an issue with the CAX80, which really sucks for a $450 piece of equipment. Guess I'll have to call Netgear if it happens again. I see no point in paying for a tech to come out and tell me the CAX80 is the problem.
Have the ISP check the signal and line quality and provisioning UP to the modem.
Be sure there are no coax cable line splitters in the between the modem and ISP service box.
Be sure your using good quality RG6 coax cable up to the modem.Might contact NG support to ask for addition help and information regarding this.
Having a RCN tech come out on Thursday to check out the issue because I'm completely baffled at this point. I feel like the intervals are just getting smaller now too. Last on was almost exactly 12 hours.
There are no splitters between the line into the house and the device. There are only the two female-to-female coax connectors (753GFFF) to extend the cable <10ft to the wallplate on the first floor (done with brand new RG6). Alltogether there's roughly 30-35ft of cable between the cable coming out of the ground and my CAX80. ~20ft of that is RCNs cable they installed about 4-5 years ago when the service was first put into the neighborhood.
I also called the Netgear technical support which tried to tell me it was a Wi-Fi channel issue (it is 100% NOT a Wi-Fi issue). I have a technical engineering background and I know this is not the case. I stressed this point considerably and yet I'm not sure if they're scripted or what but they absolutely insisted on it. Increadibly fustrating.
So yeah, this is where I'm at. Guess I'll be doing a lot of modem reboots until Thursday...
Well to verify its not a wifi issue, you can turn OFF the wifi radios and then check again. You can install a external wifi router configured for AP mode as a 2ndary wifi as well. I doubt the wifi is an issue as well.
Make contact with the forum moderator as well.
