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Cm1000 intermitten packet loss

Jay1134
Tutor

Cm1000 intermitten packet loss

Cm1000 modem experiencing errors causing packet loss.

CM-STATUS message sent. Event Type Code: 24; Chan ID: 159

CM-STATUS message sent. Event Type Code: 16; Chan ID: 159

Dynamic Range Window violation

What has been tried:
New coax from drop on pole
New connectors throughout
All splitters eliminated
2 pass thrus replaced.
Message 1 of 8
Jay1134
Tutor

Re: Cm1000 intermitten packet loss

 
Message 2 of 8
Jay1134
Tutor

Re: Cm1000 intermitten packet loss

 
Message 3 of 8
FURRYe38
Guru

Re: Cm1000 intermitten packet loss

Power levels are too high:

https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router

 

Lots of correctables and un-currectables that should be zero across the channels.

 

Any Criticals, Errors or Warnings seen in the event logs needs to be reviewed and resolved by the ISP. Indicates a signal issue on the ISP line up to the modem.

 

Be sure your using a good quality LAN cable between the modem and router. CAT6 is recommended. 

Be sure to test the modem for issues with out a wifi router in the mix. 

 

Have the ISP check the signal and line quality UP to the modem. Be sure the ISP provisions the modem correctly.
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. 
Start with removing any amplifiers, signal attenuators, or splitters from the coax.
From there check the line for kinks, damage, moisture in the line.
Check the connectors for improperly made ends, foil touching the copper coax line, loose connections, bad/old/cheap connectors, or corroded connections. Replace them if you do.
Be sure to power OFF the modem for 1 minute then back ON.
https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Mod...
https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html
https://highspeed.tips/docsis-events/

Message 4 of 8
plemans
Guru

Re: Cm1000 intermitten packet loss

Take a look through @duckware's post on troubleshooting cable modem issues. Its quite involved but goes through checking quite a few things and potential issues you can run into. 

https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html

 

Message 5 of 8
Jay1134
Tutor

Re: Cm1000 intermitten packet loss

I have seen his page before coming here. I tried most of the beginning steps in double checking all lines and eliminated all uneeded / old splitters. I guess I'll have to do a deep dive into all values and cross check. Any other tips are appreciated specifically from those of you who have experienced the same errors.

Isp is optimum formerly suddenlink gig service.
Message 6 of 8
plemans
Guru

Re: Cm1000 intermitten packet loss

The best you can do is checking your own lines/splitters/connections. 

I've had a sketchy splitter that caused issues. I've also had one that caused feedback on an uncapped port. So its worth direct connecting to where it comes into the home (the modem). If the issues is clear and you don't have issues, its not the signal, its something in the home. If you're still having issues, the its on the ISP to clear it up. Sadly, sometimes it takes several trieds (as seen by the post by duckware). Not all techs are competent. Or they find 1 problem and think that's the only issue. 

Message 7 of 8
Jay1134
Tutor

Re: Cm1000 intermitten packet loss

Yea I've already eliminated everything other than a direct connect. 2 of the 3 techs weren't very competent. My setup is direct from pole with new cable and connectors.
Message 8 of 8
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