drmsi9292's profile

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Saturday, February 27th, 2021

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Modem unable to lock to upstream channels suddenly

Hello,

 

I've had Xfinity internet for about a week now. Things had been fine until this morning, seems my upstream light is blinking (as is downstream, occasionally) and my connection is mediocre. I still have internet, but anything requiring a stable connection (ex gaming) has noticable interruptions. I can further see the issues by pinging Google and watching timeouts roll in consistently at varying intervals. My modem is a Netgear C6220.

 

My line has no splitters or any other devices on it. It's a direct line in from the box outside my house. I even connected as close as possible to the line in to rule out the coax within the home and had the same issue.


Thanks for any assistance!

 

Startup Procedure
ProcedureStatusComment
Acquire Downstream Channel649750000 HzLocked
Connectivity StateOKOperational
Boot StateOKOperational
Configuration FileOK 
SecurityEnableBPI+
IP Provisioning ModeHonor MDDIPv6 only

Downstream Bonded Channels
ChannelLock StatusModulationChannel IDFrequencyPowerSNRCorrectablesUncorrectables
1LockedQAM25630649750000 Hz0.5 dBmV38.6 dB00
2LockedQAM25626625750000 Hz1.1 dBmV37.9 dB73603296844
3LockedQAM25627631750000 Hz1.7 dBmV38.7 dB192384785720
4LockedQAM25628637750000 Hz0.9 dBmV38.5 dB2716591047112
5Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
6LockedQAM25631655750000 Hz0.9 dBmV39.0 dB00
7LockedQAM25632661750000 Hz-0.2 dBmV38.2 dB00
8LockedQAM25633667750000 Hz-0.5 dBmV37.8 dB00

Upstream Bonded Channels
ChannelLock StatusUS Channel TypeChannel IDSymbol RateFrequencyPower
1LockedATDMA15120 Ksym/sec35600000 Hz43.0 dBmV
2Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
3Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
4Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
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Expert

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112.6K Messages

4 years ago

It may be best to get a tech out to investigate this. Your coax drop line from the pole / pedestal may need to be replaced. Or it may be something farther up the line.

 

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 !

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