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Visitor

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9 Messages

Friday, August 5th, 2022 4:59 PM

Closed

Motorola MG8702 drops connection every 30 minutes

my MG8702 keeps dropping connection

here are my stats

Downstream Bonded

Channel Lock Status Modulation Channel ID Freq. (MHz) Pwr (dBmV) SNR (dB) Corrected Uncorrected
   1 Locked QAM256 20 525.0 3.8 45.7 0 0
   2 Locked QAM256 13 477.0 5.0 46.2 0 0
   3 Locked QAM256 14 483.0 4.9 46.1 0 0
   4 Locked QAM256 15 489.0 4.8 45.9 0 0
   5 Locked QAM256 16 495.0 4.7 45.8 0 0
   6 Locked QAM256 17 507.0 4.4 46.0 0 0
   7 Locked QAM256 18 513.0 4.2 45.7 0 0
   8 Locked QAM256 19 519.0 4.1 45.7 0 0
   9 Locked QAM256 21 531.0 3.7 45.5 0 0
   10 Locked QAM256 22 537.0 3.6 45.5 0 0
   11 Locked QAM256 23 543.0 3.3 45.2 0 0
   12 Locked QAM256 24 549.0 3.2 45.1 0 0
   13 Locked QAM256 25 555.0 3.2 45.0 0 0
   14 Locked QAM256 26 561.0 2.9 44.9 0 0
   15 Locked QAM256 27 567.0 2.7 44.8 0 0
   16 Locked QAM256 28 573.0 2.7 44.7 0 0
   17 Locked QAM256 29 579.0 2.4 44.5 0 0
   18 Locked QAM256 30 585.0 2.2 44.4 0 0
   19 Locked QAM256 31 591.0 2.2 44.3 0 0
   20 Locked QAM256 32 597.0 2.0 44.2 0 0
   21 Locked QAM256 33 603.0 1.8 44.0 0 0
   22 Locked QAM256 34 609.0 1.7 44.0 0 0
   23 Locked QAM256 35 615.0 1.3 43.6 0 0
   24 Locked QAM256 36 621.0 1.0 43.5 0 0
   25 Locked QAM256 37 627.0 0.7 43.2 0 0
   26 Locked QAM256 38 633.0 0.1 42.8 0 0
   27 Locked QAM256 39 639.0 -0.2 42.4 0 0
   28 Locked QAM256 40 645.0 -0.7 42.1 0 0
   29 Locked QAM256 41 651.0 -1.2 41.8 0 0
   30 Locked QAM256 42 657.0 -1.6 41.3 0 0
   31 Locked QAM256 43 663.0 -2.1 40.9 0 0
   32 Locked QAM256 44 669.0 -2.3 40.6 0 0
   33 Locked OFDM PLC 193 688.0 -3.4 36.3 15768770 0

Upstream Bonded

Channel Lock Status Channel Type Channel ID Symb. Rate (Ksym/sec) Freq. (MHz) Pwr (dBmV)
   1 Locked SC-QAM 17 5120 36.7 42.5
   2 Locked SC-QAM 18 5120 30.3 41.8
   3 Locked SC-QAM 19 5120 23.7 41.0
   4 Locked SC-QAM 20 5120 17.3 40.8
   5 Locked SC-QAM 21 1280 41.2 38.8

Expert

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108.3K Messages

3 years ago

The signal values were o/k at that snapshot in time. Is this with a WiFi connection ? If so, for a test, does a computer / device that is hardwired directly to the 8702 gateway device with an ethernet cable have the same problem ?


With this test, we are trying to isolate this down to being either a WiFi-only problem or a problem with the general connection to the Comcast system which would of course affect both. It's a good first step of troubleshooting before proceeding any further. 

Visitor

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9 Messages

3 years ago

Yes this is the same with wifi or hardwired. I have extensively tested it with both.

Expert

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108.3K Messages

3 years ago

O/k. Are there any modem component RF error log entries being shown ? If so, please post them as well in their entirety (copy and paste them, don't post a screenshot) but redact the CM MAC and the CMTS MAC addresses for your privacy. They are considered to be personal information. The posting of personally identifying information is a violation of their forum guidelines. The forum bot will not allow your post to be seen publically.

Visitor

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9 Messages

3 years ago

sir where would i check for RF error entries.. is this what you are looking for.

Expert

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108.3K Messages

3 years ago

Yes. That's them. If there is more, please post them all.

Visitor

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9 Messages

3 years ago

All the way back to May

Expert

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108.3K Messages

3 years ago

That's a considerable gap between may and July.. Nevertheless. Even though the signal stats looked o/k at that snapshot in time, the error log entries confirm that something is currently going on. Perhaps there is noise ingress into the line(s) / an upstream channel / return path impairment somewhere.


There are other signal stat values 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 will be able to poll the CMTS (Cable Modem Termination System) to check 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 !

(edited)

Visitor

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9 Messages

@EG​ i have sent multiple messages to comcast no traction .. can you see if there is someone who can reach out..

Expert

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108.3K Messages

@niket11 

I'm going to attempt to re-escalate this.

I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.

Was your question answered? Please mark an Accepted Answer!tick

Visitor

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9 Messages

Comcast came out and observed water damage.... and replaced a lot of the gear at the distribution box.. It looks a lot better now..

Visitor

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9 Messages

3 years ago

Thank you so much.!!! Looking forward to hearing from them.

New Problem Solver

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452 Messages

Thank you for taking the time to reach out to our community and for working with one of our awesome experts @EG on this connection issue. My team and I would be more than happy to continue from where they left off and help get this resolved so that you can enjoy your connection! To get started, please use the chat icon in the upper right to enter Direct Messaging. From there, go ahead and compose a new message to "Xfinity Support" and send us a message with your name and address. 

 

To send a direct message [private message]:

  • Click "Sign In" if necessary
  • Click the "Direct Message" icon

or https://forums.xfinity.com/direct-messaging

  • Click the "New message" (pencil and paper) icon
  • The "To:" line prompts you to "Type the name of a person". Instead, type "Xfinity Support" there.
  • - As you are typing a drop-down list appears. Select "Xfinity Support" from that list.
  • - An "Xfinity Support" graphic replaces the "To:" line.
  • Type your message in the text area near the bottom of the window
  • Press Enter to send it

I no longer work for Comcast.

Visitor

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9 Messages

Sending the details now.

Visitor

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9 Messages

Josh, sent you more details, happy to talk over phone as well.

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