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Having internet issues - channel bonding.

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Having internet issues - channel bonding.

Have been having pretty frequent internet issues the last 2-3 weeks, connection is spiking from being great to being practically non existent within seconds.  Have looked up some posts on the forum and it seems like I am having channel bonding issues. I've performed multiple factory resets on my modem and disconnecting all equipment/cables and am still having issues.  Below is my current cable connection stats from my CM600 modem.  Also my modem's uplink/upstream indicator is displayed as solid amber on my modem, it used to be solid green but had changed when I first started having issues, I've checked with manufacturer regarding this status and it goes solid amber when there is only 1 upstream bonded channel, which matches stats below.
Also getting extreme packet loss.

 

 

Cable Connection
 
 
 
Frequency start Value
This field below allows you to modify the frequency the cable modem start with its scan during initialization and registration. Enter the new start frequency and restart the cable modem for it to take effect.
Starting Frequency
 
Startup Procedure
Procedure Status Comment
Acquire Downstream Channel 573000000 Hz Locked
Connectivity State OK Operational
Boot State OK Operational
Security Enable BPI+
IP Provisioning Mode Honor MDD IPv6 only
 
<tabindex=-1>Downstream Bonded Channels</tabindex=-1>
Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
1 Locked QAM256 13 573000000 Hz -22.9 dBmV 28.8 dB 64062 25
2 Locked QAM256 14 579000000 Hz -23.0 dBmV 28.8 dB 52467 24
3 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
4 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
5 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
6 Locked QAM256 18 603000000 Hz -24.5 dBmV 26.6 dB 2191085 721904
7 Locked QAM256 19 609000000 Hz -25.7 dBmV 26.5 dB 36476078 8684092
8 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
9 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
10 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
11 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
12 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
13 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
14 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
15 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
16 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
17 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
18 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
19 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
20 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
21 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
22 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
23 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
24 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
 
<tabindex=-1>Upstream Bonded Channels</tabindex=-1>
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 7 5120 Ksym/sec 22800000 Hz 57.0 dBmV
2 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
3 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
4 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
5 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
6 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
7 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
8 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
 
Current System Time: Mon Jun 22 19:16:18 2020
System Up Time: 0:20:24
 
 

 

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Expert

Re: Having internet issues - channel bonding.

Everything is way out of spec !! You have  terrible connection !!! That can cause random disconnects, spontaneous re-booting of the modem, speed, packet loss, and latency problems.

In a self troubleshooting effort to try to obtain better connectivity / more wiggle room, check to see if there are there any excess/unneeded coax cable splitters in the line leading to the modem that can be eliminated/re-configured. Any splitters that remain should be high quality and cable rated for 5-1002 MHz, bi-directional, and no gold colored garbage types like GE, RadioShack, RCA, Philips, Leviton, Magnavox, and Rocketfish from big box stores like Home Depot, Lowes, Target, Wal-Mart etc. Splitters should be swapped with known to be good / new ones to test

If there aren't any unneeded splitters that can be eliminated and if your coax wiring setup can't be reconfigured so that there is a single two way splitter connected directly off of the drop from the street/pole with one port feeding the modem and the other port feeding the rest of the house/equipment with additional splits as needed, and you've checked all the wiring and fittings for integrity and tightness and refresh them by taking them apart then check for and clean off any corrosion / oxidation on the center wire and put them back together again, then perhaps it's best to book a tech visit to investigate and correct.



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Re: Having internet issues - channel bonding.

Tried calling comcast again to see if I could schedule a technician to come out and check out my connection.  Automated message stated that it would restart my modem, restart never actually came through - though am confident that it would not resolve the issue, as I have restarted and factory reset my modem countless times now.  Called back and automated voice stated that I would receive a call back, though it has now been about 2 hours since then and have not received any contact.
Had a technician scheduled to come out a week or so ago, never actually saw the technician nor did I receive any contact as followup regarding the issue with my connection.

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Expert

Re: Having internet issues - channel bonding.

O/k, understood, but did any of that self troubleshooting stuff apply ?



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I am a Customer Expert volunteering my time to help other customers here in the Forums.
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Re: Having internet issues - channel bonding.

The self troubleshooting that you've provided is not applicable, I don't have any splitters in my apartment. I've disconnected/reconnected all the cables multiple times, there is no corrosion or oxidation, nothing that I can visibly see being bad with any cables.

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Re: Having internet issues - channel bonding.

Then your only choice is a tech visit. Bear in mind that if the premises facing techs can not find or fix a problem at your home, it is they who are responsible for escalating it to their line / network / maintenance dept. techs. The problem may lie beyond your home in the local neighborhood infrastructure somewhere but it is their S.O.P. to start at the home.

Good luck with it !



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? Mark the post as Best Answer!