For the past 2-3 weeks my internet connection has been spotty, my connection drops about 3-4 per hour, for durations of 45 seconds - 5 minutes. Getting high ping/bad connection in games, media streaming is spotty and choppy etc. I read a lot of people recommending having a technician to come out and look at the connections coming into my house. Earlier today I did just that, and a technician came and to my surprise he ran a new cable from their box to my house, and straight into my modem. Alas nothing has changed. I was hopeful as for a few hours the connection was great, consistent, and strong. Started playing some video games and once again, bad connection. Here is a picuture of my logs: https://imgur.com/a/Mk2Y4vW

As far as I know, we do not have an amplifier in the line.

Within my house, yes the cable that runs from outside comes directly into my modem. I will go and take a look outside to see what the situation out there is looking like.

I haven't tried a different one, no. I only have access to the one that I am currently using. So from the charts and data, the signals and power levels look good? (I have no idea what I am looking at). In other words, should I be contacting my ISP again to resolve some sort of issue on their end, or is the most likely the modem/hardware that I have?

Here is the cable connection log: Startup ProcedureProcedureStatusCommentAcquire Downstream Channel453000000 HzLockedConnectivity StateOKOperationalBoot StateOKOperationalSecurityEnabledBPI+IP Provisioning ModeIPv6 Onlyipv6Only(1) Downstream Bonded ChannelsChannelLock StatusModulationChannel IDFrequencyPowerSNRCorrectablesUncorrectables1LockedQAM2561453000000 Hz6.2 dBmV43.6 dB002LockedQAM2562459000000 Hz6.1 dBmV43.4 dB003LockedQAM2563465000000 Hz6.5 dBmV43.6 dB004LockedQAM2564471000000 Hz6.6 dBmV43.4 dB005LockedQAM2565477000000 Hz7 dBmV43.2 dB006LockedQAM2566483000000 Hz7.1 dBmV43.6 dB007LockedQAM2567489000000 Hz7.3 dBmV43.7 dB008LockedQAM2568495000000 Hz7.3 dBmV43.7 dB009LockedQAM2569507000000 Hz7.6 dBmV43.7 dB0010LockedQAM25610513000000 Hz7.7 dBmV43.7 dB0011LockedQAM25611519000000 Hz8 dBmV43.8 dB0012LockedQAM25612525000000 Hz7.8 dBmV43.6 dB0013LockedQAM25613633000000 Hz7.9 dBmV42.7 dB0014LockedQAM25614639000000 Hz6.9 dBmV42.4 dB0015LockedQAM25615645000000 Hz8.1 dBmV42.9 dB0016LockedQAM25616651000000 Hz8.2 dBmV42.9 dB0017LockedQAM25617657000000 Hz8.2 dBmV43 dB0018LockedQAM25618663000000 Hz8.2 dBmV42.8 dB0019LockedQAM25619669000000 Hz8.1 dBmV42.8 dB0020LockedQAM25620675000000 Hz8 dBmV41.9 dB0021LockedQAM25621681000000 Hz8.2 dBmV42.8 dB0022LockedQAM25622687000000 Hz8.2 dBmV42.9 dB0023LockedQAM25623693000000 Hz8.2 dBmV43 dB0024LockedQAM25624699000000 Hz8.2 dBmV43 dB0025LockedQAM25626705000000 Hz8.2 dBmV43 dB0026LockedQAM25627711000000 Hz8 dBmV42.9 dB0027LockedQAM25628717000000 Hz8.2 dBmV42.9 dB0028LockedQAM25630729000000 Hz8.1 dBmV42.7 dB0029LockedQAM25631735000000 Hz7.9 dBmV42.5 dB0030LockedQAM25632741000000 Hz8.2 dBmV42.8 dB0031LockedQAM25633747000000 Hz7.9 dBmV42.4 dB0032Not LockedUnknown00 Hz0.0 dBmV0.0 dB00 Upstream Bonded ChannelsChannelLock StatusUS Channel TypeChannel IDSymbol RateFrequencyPower1LockedATDMA335120 Ksym/sec17800000 Hz48.8 dBmV2LockedATDMA345120 Ksym/sec24200000 Hz48.8 dBmV3LockedATDMA355120 Ksym/sec30600000 Hz49 dBmV4LockedATDMA365120 Ksym/sec37000000 Hz49.3 dBmV5Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV6Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV7Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV8Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV Downstream OFDM ChannelsChannelLockStatusModulation /Profile IDChannelIDFrequencyPowerSNR /MERActive SubcarrierNumber RangeUnerroredCodewordsCorrectableCodewordsUncorrectableCodewords1Locked0 ,1 ,225266000000 Hz6.9 dBmV43.9 dB148 ~ 3947966310553094022302Not Locked000 Hz0 dBmV0.0 dB0 ~ 4095000 Upstream OFDMA ChannelsChannelLock StatusModulation / Profile IDChannel IDFrequencyPower1Not Locked000 Hz0 dBmV2Not Locked000 Hz0 dBmV

do you have an amplifier in your line? Your downstream signal is very strong which usually indicates you're close to a hub. But your upstream signal is high and that usually indicates you're quite a ways away from the hub. So I'm curious why its not balanced properly.

CM1200 Dropping Connection | NETGEAR Communities

11 Replies

Ashhan

Guide

Dec 15, 2021

Here is the cable connection log:

Startup Procedure

Procedure	Status	Comment
Acquire Downstream Channel	453000000 Hz	Locked
Connectivity State	OK	Operational
Boot State	OK	Operational
Security	Enabled	BPI+
IP Provisioning Mode	IPv6 Only	ipv6Only(1)

Downstream Bonded Channels

Channel	Lock Status	Modulation	Channel ID	Frequency	Power	SNR	Correctables	Uncorrectables
1	Locked	QAM256	1	453000000 Hz	6.2 dBmV	43.6 dB	0	0
2	Locked	QAM256	2	459000000 Hz	6.1 dBmV	43.4 dB	0	0
3	Locked	QAM256	3	465000000 Hz	6.5 dBmV	43.6 dB	0	0
4	Locked	QAM256	4	471000000 Hz	6.6 dBmV	43.4 dB	0	0
5	Locked	QAM256	5	477000000 Hz	7 dBmV	43.2 dB	0	0
6	Locked	QAM256	6	483000000 Hz	7.1 dBmV	43.6 dB	0	0
7	Locked	QAM256	7	489000000 Hz	7.3 dBmV	43.7 dB	0	0
8	Locked	QAM256	8	495000000 Hz	7.3 dBmV	43.7 dB	0	0
9	Locked	QAM256	9	507000000 Hz	7.6 dBmV	43.7 dB	0	0
10	Locked	QAM256	10	513000000 Hz	7.7 dBmV	43.7 dB	0	0
11	Locked	QAM256	11	519000000 Hz	8 dBmV	43.8 dB	0	0
12	Locked	QAM256	12	525000000 Hz	7.8 dBmV	43.6 dB	0	0
13	Locked	QAM256	13	633000000 Hz	7.9 dBmV	42.7 dB	0	0
14	Locked	QAM256	14	639000000 Hz	6.9 dBmV	42.4 dB	0	0
15	Locked	QAM256	15	645000000 Hz	8.1 dBmV	42.9 dB	0	0
16	Locked	QAM256	16	651000000 Hz	8.2 dBmV	42.9 dB	0	0
17	Locked	QAM256	17	657000000 Hz	8.2 dBmV	43 dB	0	0
18	Locked	QAM256	18	663000000 Hz	8.2 dBmV	42.8 dB	0	0
19	Locked	QAM256	19	669000000 Hz	8.1 dBmV	42.8 dB	0	0
20	Locked	QAM256	20	675000000 Hz	8 dBmV	41.9 dB	0	0
21	Locked	QAM256	21	681000000 Hz	8.2 dBmV	42.8 dB	0	0
22	Locked	QAM256	22	687000000 Hz	8.2 dBmV	42.9 dB	0	0
23	Locked	QAM256	23	693000000 Hz	8.2 dBmV	43 dB	0	0
24	Locked	QAM256	24	699000000 Hz	8.2 dBmV	43 dB	0	0
25	Locked	QAM256	26	705000000 Hz	8.2 dBmV	43 dB	0	0
26	Locked	QAM256	27	711000000 Hz	8 dBmV	42.9 dB	0	0
27	Locked	QAM256	28	717000000 Hz	8.2 dBmV	42.9 dB	0	0
28	Locked	QAM256	30	729000000 Hz	8.1 dBmV	42.7 dB	0	0
29	Locked	QAM256	31	735000000 Hz	7.9 dBmV	42.5 dB	0	0
30	Locked	QAM256	32	741000000 Hz	8.2 dBmV	42.8 dB	0	0
31	Locked	QAM256	33	747000000 Hz	7.9 dBmV	42.4 dB	0	0
32	Not Locked	Unknown	0	0 Hz	0.0 dBmV	0.0 dB	0	0

Upstream Bonded Channels

Channel	Lock Status	US Channel Type	Channel ID	Symbol Rate	Frequency	Power
1	Locked	ATDMA	33	5120 Ksym/sec	17800000 Hz	48.8 dBmV
2	Locked	ATDMA	34	5120 Ksym/sec	24200000 Hz	48.8 dBmV
3	Locked	ATDMA	35	5120 Ksym/sec	30600000 Hz	49 dBmV
4	Locked	ATDMA	36	5120 Ksym/sec	37000000 Hz	49.3 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

Downstream OFDM Channels

Channel	Lock Status	Modulation / Profile ID	Channel ID	Frequency	Power	SNR / MER	Active Subcarrier Number Range	Unerrored Codewords	Correctable Codewords	Uncorrectable Codewords
1	Locked	0 ,1 ,2	25	266000000 Hz	6.9 dBmV	43.9 dB	148 ~ 3947	96631055	30940223	0
2	Not Locked	0	0	0 Hz	0 dBmV	0.0 dB	0 ~ 4095	0	0	0

Upstream OFDMA Channels

Channel	Lock Status	Modulation / Profile ID	Channel ID	Frequency	Power
1	Not Locked	0	0	0 Hz	0 dBmV
2	Not Locked	0	0	0 Hz	0 dBmV

plemans
Guru - Experienced User
Dec 16, 2021
do you have an amplifier in your line?

Your downstream signal is very strong which usually indicates you're close to a hub.

But your upstream signal is high and that usually indicates you're quite a ways away from the hub.

So I'm curious why its not balanced properly.
- Ashhan
  Guide
  Dec 20, 2021
  As far as I know, we do not have an amplifier in the line.
  - plemans
    Guru - Experienced User
    Dec 20, 2021
    check it for amplifiers or even for splitters.
    
    Sometimes causing the power imbalance. And while technically both are in spec for power levels, they don't make sense.

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CM1200 Dropping Connection