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CM1200, Orbi AX6000 - Internet Issues: Intermittent Slow, or Disconnection - Spectrum

findcanary
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CM1200, Orbi AX6000 - Internet Issues: Intermittent Slow, or Disconnection - Spectrum

Hi All! 

I appreciate everyone taking a quick read of this, and seeing where I can begin.  I subscribe to a gigabit internet package, however, I'm typically receiving 300-500mbs, at the router, however, once in a great while, I'll get 900+gbs.  Always seems to work great when the technicians arrive, and they always say: You won't actually get 900, you should be happy with 600, or it's your custom setup and I should use stock.  I don't know if I have a line problem, a hub problem, or a hardware problem. I'm hoping to learn what to look for when internet speeds are terrible so I have evidence to show the technician.  

 

What happens: I'll usually notice slow internet, then do the speed test within the Orbi, confirm slow speeds, then I've made it a habit of checking directly against the modem *Hardwired, just to eliminate a variable. It's usually faster, but I think it's because the Okta Speed test (BuiltIn) uses a different server than the one I select manually on my computer.  

 

Hardware: 

Netgear CM1200 

Netgear Orbi AX6000 (3-pack) 

Cable Matters CAT8 1ft between router and modem (Same Results with CAT6A, CAT6, or CAT5E) 

Spectrum 1GB internet package. 

 

Can anyone help me read the modem diagnostics to know if there is something that stands out?  

 

Sorry, the logs are only a few hours long, I had to do a hard reset of the everything with the tech here.  

 

Thank you for all of your help!  

 

Startup Procedure
ProcedureStatusComment
Acquire Downstream Channel441000000 HzLocked
Connectivity StateOKOperational
Boot StateOKOperational
SecurityEnabledBPI+
IP Provisioning ModeIPv4 Onlyipv4Only(0)
 
Downstream Bonded Channels
ChannelLock StatusModulationChannel IDFrequencyPowerSNRCorrectablesUncorrectables
1LockedQAM2561441000000 Hz9.1 dBmV43.3 dB00
2LockedQAM2562453000000 Hz9 dBmV43.1 dB00
3LockedQAM2563459000000 Hz9 dBmV43 dB00
4LockedQAM2565471000000 Hz8.9 dBmV43 dB00
5LockedQAM2566477000000 Hz9 dBmV43.1 dB00
6LockedQAM2567483000000 Hz9.1 dBmV43.1 dB00
7LockedQAM2568489000000 Hz9.2 dBmV43.2 dB00
8LockedQAM2569495000000 Hz9.2 dBmV43.2 dB00
9LockedQAM25610501000000 Hz9.3 dBmV43.2 dB00
10LockedQAM25611507000000 Hz9.3 dBmV43.2 dB00
11LockedQAM25612513000000 Hz9 dBmV43 dB00
12LockedQAM25613519000000 Hz8.9 dBmV42.9 dB00
13LockedQAM25614525000000 Hz8.6 dBmV42.8 dB00
14LockedQAM25615531000000 Hz8.5 dBmV42.7 dB00
15LockedQAM25616555000000 Hz8.1 dBmV42.4 dB00
16LockedQAM25617561000000 Hz8.1 dBmV42.4 dB00
17LockedQAM25618567000000 Hz7.7 dBmV42.3 dB00
18LockedQAM25619573000000 Hz7.5 dBmV42.1 dB00
19LockedQAM25620579000000 Hz7.4 dBmV42.1 dB00
20LockedQAM25621585000000 Hz7.5 dBmV42.1 dB00
21LockedQAM25622591000000 Hz7.6 dBmV42.1 dB00
22LockedQAM25623597000000 Hz7.7 dBmV42.1 dB00
23LockedQAM25624603000000 Hz7.8 dBmV42.2 dB00
24LockedQAM25626609000000 Hz7.7 dBmV42.1 dB00
25LockedQAM25627615000000 Hz7.7 dBmV42.1 dB00
26LockedQAM25628621000000 Hz8 dBmV42 dB00
27LockedQAM25629627000000 Hz8.2 dBmV42.1 dB00
28LockedQAM25630633000000 Hz8 dBmV42 dB00
29LockedQAM25631639000000 Hz8.1 dBmV41.9 dB00
30LockedQAM25632645000000 Hz8.2 dBmV41.9 dB00
31LockedQAM25633651000000 Hz8.4 dBmV41.9 dB00
32Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
 
Upstream Bonded Channels
ChannelLock StatusUS Channel TypeChannel IDSymbol RateFrequencyPower
1LockedATDMA735120 Ksym/sec17600000 Hz37.5 dBmV
2LockedATDMA745120 Ksym/sec24000000 Hz39.3 dBmV
3LockedATDMA755120 Ksym/sec30400000 Hz40.5 dBmV
4LockedATDMA765120 Ksym/sec36800000 Hz40.8 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 ,1 ,225662000000 Hz9.2 dBmV41.5 dB1108 ~ 29878877237576351701571
2Not Locked000 Hz0 dBmV0.0 dB0 ~ 4095000
 
Upstream OFDMA Channels
ChannelLock StatusModulation / Profile IDChannel IDFrequencyPower
1Not Locked000 Hz0 dBmV
2Not Locked000 Hz0 dBmV
 
Extended Upstream Transmit Power
Enable Extended Upstream Transmit Power
 
Current System Time:Mon Feb 15 17:04:38 2021
System Up Time:01:32:34

 

 
 
 
 
TimePriorityDescription
Mon Feb 15 16:57:34 2021Notice (6)CM-STATUS message sent. Event Type Code: 24; Chan ID: 25; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1 2.;CM-MAC=38:94:ed:07:28:58;CMTS-MAC=00:01:5c:7e:6c:58;CM-QOS=1.1;CM-VER=3.1;
Mon Feb 15 16:57:12 2021Notice (6)CM-STATUS message sent. Event Type Code: 16; Chan ID: 25; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2.;CM-MAC=38:94:ed:07:28:58;CMTS-MAC=00:01:5c:7e:6c:58;CM-QOS=1.1;CM-VER=3.1;
Mon Feb 15 15:52:23 2021Notice (6)CM-STATUS message sent. Event Type Code: 24; Chan ID: 25; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1 2.;CM-MAC=38:94:ed:07:28:58;CMTS-MAC=00:01:5c:7e:6c:58;CM-QOS=1.1;CM-VER=3.1;
Mon Feb 15 15:51:59 2021Notice (6)CM-STATUS message sent. Event Type Code: 16; Chan ID: 25; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2.;CM-MAC=38:94:ed:07:28:58;CMTS-MAC=00:01:5c:7e:6c:58;CM-QOS=1.1;CM-VER=3.1;
Mon Feb 15 15:48:18 2021Notice (6)CM-STATUS message sent. Event Type Code: 24; Chan ID: 25; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1 2.;CM-MAC=38:94:ed:07:28:58;CMTS-MAC=00:01:5c:7e:6c:58;CM-QOS=1.1;CM-VER=3.1;
Mon Feb 15 15:48:04 2021Notice (6)CM-STATUS message sent. Event Type Code: 16; Chan ID: 25; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2.;CM-MAC=38:94:ed:07:28:58;CMTS-MAC=00:01:5c:7e:6c:58;CM-QOS=1.1;CM-VER=3.1;
Model: CM1200|Nighthawk Multi-Gig Speed Cable Modem
Message 1 of 2
FURRYe38
Guru

Re: CM1200, Orbi AX6000 - Internet Issues: Intermittent Slow, or Disconnection - Spectrum

Please visit and post about this over in the Cable modrm forum:

https://community.netgear.com/t5/Cable-Modems-Routers/bd-p/home-cable-modems-routers

 

Make sure your Speeds are good at the CM modem with a wired PC using Ooklas installable speed test app. Not there web page. On a wired connection with a good CPU PC, you should see near or just over 900Mpbs. 

 

Ensure LAG is disabled on the CM modem. 

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. 
https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Mod...

 

Good Luck

 

 

 

 

 

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