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Forum Discussion
CM1200 Modem + R7800 X4S Connection Issues Nightly
Alright so for background I am running the CM1200 with a R7800 X4S router. I have Comcast (Xfinity) and pay for up to 600down. I am the only person in my house connecting to the internet, and when the below described issue occurs is is both my wired and wireless connection that is affected. The only speed that doesn't seem affected is my upload which stays constant throughout as long as I have any sort of connection.
So for the last 2 months or so almost every single night around 830-10ish my internet will come to a hault; it will go to 30ish mb/s and then less than 1 mb/s and then completely cut out. When this occurs, I am wired directly into my R7800 X4S router and power cycling everything does nothing. I have isolated the modem as well during this time; disconnected the router, power cycled modem and connected directly to the modem and same issue will persist. So I believe I have eliminated the router from being the problem. I have had 3 xfinity technitions come out and check the lines, update my Coax cables, remove splitters; seemingly everything but they cannot figure out what the issue is. The issue is that when the internet goes down at night they can't seem to do anything about it and just run me through the typical power cycling cookie cutter troubleshooting which does nothing. After a few hours, internet is back to normal getting over 700 mb/s down without me doing or changing anything; it just pops back up.They have finally agreed to send an "engineer" out to check the lines below the street but I'm not sure how much of that promise was to just get me off of the phone. I stood my ground believing this is an ISP issue and not a hardware issue because the modem is not even a year old but I am starting to think it could be an issue on my end? Just seems weird that the issue only occurs later at night and always fixes itself after a few hours. Anyone have any ideas? I just plug and played my modem/router after purchasing and never changed any settings. The first 6 months or so I had these I never lost connections once; this has all started occuring since early June. Any ideas?
19 Replies
due you have the CM1200 setup with wan port aggregation enabled?
Have the ISP check the signal and line quality UP to the modem. Have them resend the config file 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.
Be sure to power OFF the modem for 1 minute them back ON.
Mcuev2 wrote:Alright so for background I am running the CM1200 with a R7800 X4S router. I have Comcast (Xfinity) and pay for up to 600down. I am the only person in my house connecting to the internet, and when the below described issue occurs is is both my wired and wireless connection that is affected. The only speed that doesn't seem affected is my upload which stays constant throughout as long as I have any sort of connection.
So for the last 2 months or so almost every single night around 830-10ish my internet will come to a hault; it will go to 30ish mb/s and then less than 1 mb/s and then completely cut out. When this occurs, I am wired directly into my R7800 X4S router and power cycling everything does nothing. I have isolated the modem as well during this time; disconnected the router, power cycled modem and connected directly to the modem and same issue will persist. So I believe I have eliminated the router from being the problem. I have had 3 xfinity technitions come out and check the lines, update my Coax cables, remove splitters; seemingly everything but they cannot figure out what the issue is. The issue is that when the internet goes down at night they can't seem to do anything about it and just run me through the typical power cycling cookie cutter troubleshooting which does nothing. After a few hours, internet is back to normal getting over 700 mb/s down without me doing or changing anything; it just pops back up.They have finally agreed to send an "engineer" out to check the lines below the street but I'm not sure how much of that promise was to just get me off of the phone. I stood my ground believing this is an ISP issue and not a hardware issue because the modem is not even a year old but I am starting to think it could be an issue on my end? Just seems weird that the issue only occurs later at night and always fixes itself after a few hours. Anyone have any ideas? I just plug and played my modem/router after purchasing and never changed any settings. The first 6 months or so I had these I never lost connections once; this has all started occuring since early June. Any ideas?
Hi there! I have tried all of the below - ISP tested lines, upstream and downstream and they said all looks clean and near perfect. There are no splitters and the tech just installed new good quality RG6 coax cables. Config file has been sent multiple times but never fixes the issue. Have tried endless power cycles with no change. Like I said, this has been going on for 2 months now. I feel like after all of this is might be something wrong with the modem specifically.
Have you tried replacing the modem? or using an old/backup modem to see if it is the issue?
