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Cable Modem Connection Info

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Regular Visitor

Cable Modem Connection Info

I have a Netgear CM1150V cable modem. Below is the current status for the cable modem after being up for 24 days.

 

Are the values for the Correctables and Uncorrectables normal?

 

Also, are the power level and SNR values within a good range?

 

Thanks

 

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

ProcedureStatusComment
Acquire Downstream Channel621000000 HzLocked
Connectivity StateOKOperational
Boot StateOKOperational
SecurityEnabledBPI+
IP Provisioning ModeHonor MDDhonorMdd(4)
 

Downstream Bonded Channels

ChannelLock StatusModulationChannel IDFrequencyPowerSNRCorrectablesUncorrectables
1LockedQAM25612621000000 Hz-6.5 dBmV43.7 dB00
2LockedQAM2561555000000 Hz-6.2 dBmV44.1 dB00
3LockedQAM2562561000000 Hz-6.2 dBmV44.2 dB00
4LockedQAM2563567000000 Hz-6.4 dBmV44 dB00
5LockedQAM2564573000000 Hz-6.3 dBmV44 dB00
6LockedQAM2565579000000 Hz-6.4 dBmV43.8 dB00
7LockedQAM2566585000000 Hz-6.3 dBmV44 dB00
8LockedQAM2567591000000 Hz-6.3 dBmV43.9 dB100
9LockedQAM2568597000000 Hz-6.3 dBmV43.9 dB150
10LockedQAM2569603000000 Hz-6.4 dBmV43.9 dB90
11LockedQAM25610609000000 Hz-6.4 dBmV43.8 dB00
12LockedQAM25611615000000 Hz-6.4 dBmV43.8 dB00
13LockedQAM25613627000000 Hz-6.4 dBmV43.8 dB00
14LockedQAM25614633000000 Hz-6.5 dBmV43.7 dB00
15LockedQAM25615639000000 Hz-6.3 dBmV43.8 dB00
16LockedQAM25616645000000 Hz-6.3 dBmV43.8 dB00
17LockedQAM25617651000000 Hz-6.2 dBmV43.8 dB00
18LockedQAM25618657000000 Hz-6.3 dBmV43.7 dB00
19LockedQAM25619663000000 Hz-6.3 dBmV43.7 dB00
20LockedQAM25620669000000 Hz-6.3 dBmV43.6 dB251544
21LockedQAM25621675000000 Hz-6.5 dBmV42.8 dB606873
22LockedQAM25622681000000 Hz-6.3 dBmV43.7 dB00
23LockedQAM25623687000000 Hz-6.3 dBmV43.6 dB00
24LockedQAM25624693000000 Hz-6.2 dBmV43.7 dB00
25LockedQAM25625699000000 Hz-6.3 dBmV43.6 dB34932244
26LockedQAM25626705000000 Hz-6.3 dBmV43.6 dB258667134319
27LockedQAM25627711000000 Hz-6.4 dBmV43.5 dB301137218338
28LockedQAM25628717000000 Hz-6.4 dBmV43.5 dB11572172120
29LockedQAM25629723000000 Hz-6.3 dBmV43.5 dB250
30LockedQAM25630729000000 Hz-6.4 dBmV43.5 dB250
31LockedQAM25631735000000 Hz-6.1 dBmV43.6 dB190
32LockedQAM25632741000000 Hz-6.3 dBmV43.6 dB130
 

Upstream Bonded Channels

ChannelLock StatusUS Channel TypeChannel IDSymbol RateFrequencyPower
1LockedATDMA15120 Ksym/sec38800000 Hz44.3 dBmV
2LockedATDMA25120 Ksym/sec32400000 Hz43.5 dBmV
3LockedATDMA35120 Ksym/sec26000000 Hz43.3 dBmV
4LockedATDMA45120 Ksym/sec19600000 Hz42.8 dBmV
5Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
6Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
7Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
8Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
 

Downstream OFDM Channels

ChannelLock
Status
Modulation /
Profile ID
Channel
ID
FrequencyPowerSNR /
MER
Active Subcarrier
Number Range
Unerrored
Codewords
Correctable
Codewords
Uncorrectable
Codewords
1Locked0 ,1193957000000 Hz-7.3 dBmV41.5 dB1108 ~ 298790709260903113780
2Not Locked000 Hz0 dBmV0.0 dB0 ~ 4095000
 

Upstream OFDMA Channels

ChannelLock StatusModulation / Profile IDChannel IDFrequencyPower
1Not Locked000 Hz0 dBmV
2Not Locked000 Hz0 dBmV
 

Current System Time:Fri Oct 30 15:17:15 2020System Up Time:24 days 09:00:09

Highlighted
Expert

Re: Cable Modem Connection Info

The downstream power levels are on the low / weak side but are still in spec. And there may be a large number of uncorrectable bit errors on some of the channels depending on the total uptime of the modem since the last re-boot / power cycle operation. The upstream power is fine.

 

Are you actually experiencing any connectivity problems ? If not, then don't sweat it.



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Highlighted
Regular Visitor

Re: Cable Modem Connection Info

Thanks for the info. I was just curious about the information for the cable modem. Any reason why the errors only occur on some channels?

 

As for issues, I do see issues from time to time. I am responsible for a Citrix environment which can be sensitive to network latency changes. During the day, I will see the ICA latency between home and work spike. I run continuous pings to my home router and www.microsoft.com to see if there are changes in response times. This helps me determine if the latency change is wifi related, internet related or other.

 

I do see times where the local ping is constant, but the Microsoft response drops. Obviously, the internet is the internet and response times will vary. I just try to do my due diligence to make sure everything is good on my home network.

 

I appreciate checking the cable modem stats.

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Expert

Re: Cable Modem Connection Info


@DexLI wrote:

Thanks for the info. I was just curious about the information for the cable modem. Any reason why the errors only occur on some channels?


Because spurious noise ingress into the closed system can occur at specific frequencies and are not necessarily global to the system bandwidth.



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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!