Contributor
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43 Messages
daily restart of modem
I am in the 600MBps band and used to clock around 700Mbps at all times.
Once the recent work from home in MI started, the speed slows down to 6Mbps or even slower. I have to restart the modem to get back to decent speed. I have to do this multiple times a day.
Noting much has changed in terms of modem/router, #connected devices. Same number of devices as during the weekend when we all connect our laptops & phones.
Why is this happening & what is the remedy?
Responses
EG
Expert
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86.2K Messages
1 y ago
What do the modem's signal stats look like ? Try getting them here http://192.168.100.1 or here http://10.0.0.1
Please post the *Downstream Power Level*, the *Upstream Power Level*, and the *SNR* (Signal to Noise Ratio) numbers.
What is the exact make and model number of the modem ?
Is this a WiFi connection ?
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Shankarhokie
Contributor
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43 Messages
1 y ago
Noticing a lot of time sync issues!
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EG
Expert
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86.2K Messages
1 y ago
The signal stats were o/k at that snapshot in time. Are there any RF error / event log entries being shown ? If so, please post them too.
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Shankarhokie
Contributor
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43 Messages
1 y ago
It is a LAN via ethernet. It is connected to the back of a Netgear Orbi router.
Current System Time: Mon Apr 20 11:02:26 2020
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Shankarhokie
Contributor
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43 Messages
1 y ago
Thanks Eg. I'll await a message
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Shankarhokie
Contributor
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43 Messages
1 y ago
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EG
Expert
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86.2K Messages
1 y ago
Even though the signal stats looked o/k at that snapshot in time, the error log entries confirm that something is going on. Perhaps there is noise ingress into the line(s) somewhere.
There are other signal stat figures that can't be read by the modem. They are the "Upstream Rx Power" (Upstream Receive Power Level), the "Upstream SNR Ch." (Upstream Signal To Noise Ratio), and the "Upstream ICFR" (In Channel Frequency Response). These are as equally important in diagnosing connectivity issues as are the modem's stats.
I'm going to escalate your issue to the Comcast corporate employees that are available to these boards. They can check the CMTS (Cable Modem Termination System) for any real time degradation and / or error reports, see your node / cable plant and modem health, and see whether or not everything is in the green zone. They can also see a history plot for the modem and poll for those upstream receive signal stats.
You should get a reply here in your topic. Good luck !
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ComcastChe
Official Employee
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6.1K Messages
1 y ago
Hi @Shankarhokie,
We appreciate you for posting to the Xfinity Forums! Sorry for the connectivity issues you're having. I agree with @EG. Let's chat in a private message so I can gather your account information and begin to check for issues at the node. Please send me a private message with your full name, the name of the account holder, and the house number of your address, so I can assist you. To send a private message, click on "ComcastChe" and then click send a message.
Official Employees are from multiple teams within Comcast: CARE, Product, Leadership. We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Mark the post as Best Answer!
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Customer-D
New Poster
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3 Messages
1 y ago
I've had the same issue and have a similar post. However, it still has not been resolved even after 2 modems and a new line put in. I am not sure what the issue is, but I haven't called back because I haven't had the time to spend with them. It takes literal hours to accomplish anything and still have nothing resolved.
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Shankarhokie
Contributor
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43 Messages
1 y ago
Communicating with ComcastChe.
Any idea why my modem would have a 1970 time stamp? Seems like a lot of folks with intermittent connection issues have the same T3 error with 01/01/1970 timestamp.
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Shankarhokie
Contributor
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43 Messages
1 y ago
Directly connected to modem. Here are the power and SNR
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Shankarhokie
Contributor
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43 Messages
1 y ago
Upstream
Current System Time: Tue Apr 21 08:58:00 2020
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Shankarhokie
Contributor
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43 Messages
1 y ago
I have also been going back to check any recent software updates/upgrades. Recently, Malwarebytes did a big update and I wondered if that was conflicting with the modem/router firewalls and also possibly Norton Security. It also added a Malwarebytes ad blocker for the chrome browser. I have disabled Malwarebytes for now. Let me see if things stablize.
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EG
Expert
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86.2K Messages
1 y ago
That's what a modem defaults to using when for whatever reason, when it is having difficulties talking to the T.O.D. (Time Of Day) server.
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Shankarhokie
Contributor
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43 Messages
1 y ago
Update:
Hello @ComcastChe @EG : After several hours of steady internet speeds, the problem returned with the same error (going to 01/01/1970). This morning I reset the SB8200 and so far so good. I am awaiting the deep dive results from @ComcastChe
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