Orbi WiFi 7 RBE973
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Assistance interpreting logs from cm700 Modem regarding slow internet.

Ametoad
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Assistance interpreting logs from cm700 Modem regarding slow internet.

Hello, I'm having an issue with my internet being intermittently slow, and cutting out.  I have worked with my ISP, and they ensure that I have a solid connection to my site, and I have made sure that my wiring is all fresh, and settings are correct.  I am still seeing connection speeds that dip down extremely low back and forth throughout the day.  I already ruled out my router because I hard wired straight to my modem, bypassing the router completely, and the slowness persists.  I have the following logs from my modem, I'm hoping maybe someone can assist in giving me an idea of what they mean.  Thank you in advance:

 

Downstream Bonded Channels
ChannelLock StatusModulationChannel IDFrequencyPowerSNRCorrectablesUnCorrectables
1LockedQAM 2561561000000 Hz-4.5 dBmV37.6 dB00
2LockedQAM 2562567000000 Hz-5.0 dBmV37.3 dB80
3LockedQAM 2563573000000 Hz-5.7 dBmV38.6 dB00
4LockedQAM 2564579000000 Hz-6.2 dBmV37.3 dB00
5LockedQAM 2565585000000 Hz-6.5 dBmV38.6 dB170
6LockedQAM 2566591000000 Hz-7.4 dBmV37.6 dB00
7LockedQAM 2567597000000 Hz-7.9 dBmV37.6 dB50
8LockedQAM 2568603000000 Hz-8.9 dBmV37.6 dB00
9LockedQAM 2569609000000 Hz-9.7 dBmV36.6 dB00
10LockedQAM 25610615000000 Hz-10.5 dBmV36.6 dB70
11LockedQAM 25611621000000 Hz-11.0 dBmV35.5 dB60
12LockedQAM 25612627000000 Hz-11.4 dBmV31.6 dB46182472979120
13LockedQAM 25613633000000 Hz-11.2 dBmV31.3 dB384310811791473
14LockedQAM 25616651000000 Hz-11.5 dBmV26.2 dB4583943091615
15LockedQAM 25617657000000 Hz-12.0 dBmV36.3 dB00
16LockedQAM 25618663000000 Hz-12.2 dBmV36.3 dB10
17LockedQAM 25619669000000 Hz-12.0 dBmV36.3 dB00
18LockedQAM 25620675000000 Hz-11.7 dBmV35.7 dB00
19LockedQAM 25621681000000 Hz-11.2 dBmV36.6 dB180
20LockedQAM 25622687000000 Hz-10.9 dBmV36.3 dB00
21LockedQAM 25623693000000 Hz-10.7 dBmV36.3 dB60
22LockedQAM 25624699000000 Hz-10.0 dBmV36.9 dB00
23LockedQAM 25625705000000 Hz-9.5 dBmV36.9 dB130
24LockedQAM 25626711000000 Hz-7.9 dBmV37.3 dB00
25LockedQAM 25627717000000 Hz-7.0 dBmV37.6 dB00
26LockedQAM 25628723000000 Hz-6.0 dBmV37.6 dB120
27LockedQAM 25629729000000 Hz-5.5 dBmV36.4 dB540
28LockedQAM 25630735000000 Hz-4.9 dBmV36.2 dB00
29LockedQAM 25631741000000 Hz-4.5 dBmV35.9 dB71
30LockedQAM 25632747000000 Hz-5.0 dBmV35.8 dB80
31Not LockedN/AN/A0 Hz0.0 dBmV0.0 dB00
32Not LockedN/AN/A0 Hz0.0 dBmV0.0 dB00

Upstream Bonded Channels
ChannelLock StatusUS Channel TypeChannel IDSymbol RateFrequencyPower
1LockedATDMA362560 Ksym/sec21400000 Hz54.0 dBmV
2LockedATDMA335120 Ksym/sec37500000 Hz54.0 dBmV
3Not LockedN/AUnknown0 Ksym/sec0 Hz0.0 dBmV
4Not LockedN/AUnknown0 Ksym/sec0 Hz0.0 dBmV
5Not LockedN/AUnknown0 Ksym/sec0 Hz0.0 dBmV
6Not LockedN/AUnknown0 Ksym/sec0 Hz0.0 dBmV
7Not LockedN/AUnknown0 Ksym/sec0 Hz0.0 dBmV
8Not LockedN/AUnknown0 Ksym/sec0 Hz0.0 dBmV

 

 

and then these from the Event Logs:

TimePriorityDescription
Sep 30 2022 05:49:35Warning (5)Lost MDD Timeout
Sep 30 2022 05:49:35Warning (5)Lost MDD Timeout
Sep 30 2022 05:49:35Warning (5)Lost MDD Timeout
Sep 30 2022 05:49:35Warning (5)Lost MDD Timeout
Sep 30 2022 05:49:35Warning (5)Lost MDD Timeout
Sep 30 2022 05:49:35Warning (5)Lost MDD Timeout
Sep 30 2022 05:49:35Warning (5)Lost MDD Timeout
Sep 30 2022 05:49:35Warning (5)Lost MDD Timeout
Sep 30 2022 05:49:35Warning (5)Lost MDD Timeout
Sep 30 2022 05:49:35Warning (5)Lost MDD Timeout
Sep 30 2022 05:49:35Warning (5)Lost MDD Timeout
Sep 30 2022 05:49:35Warning (5)Lost MDD Timeout
Sep 30 2022 05:49:35Warning (5)Lost MDD Timeout
Sep 30 2022 05:49:35Warning (5)Lost MDD Timeout
Sep 30 2022 05:49:35Warning (5)Lost MDD Timeout
Sep 30 2022 05:49:35Warning (5)Lost MDD Timeout
Sep 30 2022 05:49:35Warning (5)Lost MDD Timeout
Sep 30 2022 05:49:35Warning (5)Lost MDD Timeout
Sep 30 2022 05:49:52Error (4)Map Request Retry Timeout
Sep 30 2022 05:50:03Warning (5)Lost MDD Timeout
Sep 30 2022 06:21:14Error (4)Service Change Response rejected - Invalid transaction ID
Sep 30 2022 06:21:15Warning (5)Lost MDD Timeout
Sep 30 2022 07:11:24Error (4)Service Change Response rejected - Invalid transaction ID
Sep 30 2022 07:11:34Warning (5)Lost MDD Timeout
Sep 30 2022 07:20:59Error (4)Service Add Ack rejected - Invalid transaction ID
Sep 30 2022 07:21:34Warning (5)Lost MDD Timeout
Sep 30 2022 07:26:55Error (4)Service Change Response rejected - Invalid transaction ID
Sep 30 2022 07:27:41Warning (5)Lost MDD Timeout
Sep 30 2022 07:30:48Error (4)Service Change Response rejected - Invalid transaction ID
Sep 30 2022 07:30:51Warning (5)Lost MDD Timeout
Sep 30 2022 07:33:35Error (4)Service Change Response rejected - Invalid transaction ID
Sep 30 2022 07:33:55Warning (5)Lost MDD Timeout
Sep 30 2022 07:35:17Error (4)Service Change Response rejected - Invalid transaction ID
Sep 30 2022 07:35:18Warning (5)Lost MDD Timeout
Sep 30 2022 07:37:46Error (4)Service Change Response rejected - Invalid transaction ID
Sep 30 2022 07:38:09Warning (5)Lost MDD Timeout
Sep 30 2022 08:02:44Error (4)Service Change Response rejected - Invalid transaction ID
Sep 30 2022 08:02:45Warning (5)Lost MDD Timeout
Sep 30 2022 08:19:55Error (4)Service Change Response rejected - Invalid transaction ID
Sep 30 2022 08:20:04Warning (5)Lost MDD Timeout
Time Not EstablishedCritical (3)DHCP failed - RS sent, no RA received
Time Not EstablishedError (4)Primary lease failed, IPv4 fallback initiated
Sep 30 2022 08:38:16Warning (5)MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1
Sep 30 2022 08:38:18Warning (5)RCS Partial Service
Sep 30 2022 08:38:36Warning (5)Lost MDD Timeout
Sep 30 2022 08:46:49Error (4)Map Request Retry Timeout
Sep 30 2022 08:46:51Warning (5)Lost MDD Timeout
Sep 30 2022 08:54:29Error (4)Service Change Response rejected - Invalid transaction ID
Sep 30 2022 08:54:56Warning (5)Lost MDD Timeout
Sep 30 2022 08:59:27Error (4)Service Change Response rejected - Invalid transaction ID
Sep 30 2022 08:59:35Warning (5)Lost MDD Timeout
Sep 30 2022 09:02:59Error (4)Service Change Response rejected - Invalid transaction ID
Sep 30 2022 09:03:02Warning (5)Lost MDD Timeout
Sep 30 2022 09:20:33Error (4)Service Change Response rejected - Invalid transaction ID
Sep 30 2022 09:20:35Warning (5)Lost MDD Timeout
Sep 30 2022 09:26:20Error (4)Service Change Response rejected - Invalid transaction ID
Sep 30 2022 09:26:35Warning (5)Lost MDD Timeout
Message 1 of 2
FURRYe38
Guru

Re: Assistance interpreting logs from cm700 Modem regarding slow internet.

You have errors and criticals that the ISP needs to review and help resolve.

https://highspeed.tips/docsis-events/

 

Power levels are too high:

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

 

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 fittings are snug. 
Be sure your using good quality RG6 coax cable up to the modem. 
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

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