CM1000v2 MDD Message Timeout

Question

I have been having intermittent connectivity issues with my modem. I recently moved and am using my own modem and router, but nearly every day I have had the internet go down at least once for about a minute before coming back on its own. I called my ISP and after they tried troubleshooting over the phone, they sent a tech out to check the connections and everything. They didn't find any obvious problems so after the issues kept happening, I tried called Netgear support. I ended up replacing the modem in case there were hardware issues with the first one. After the problems kept occurring, I did some more digging and found the error messages in the event log of my modem. I wish I did that first, but what's done is done.

I searched the forum for other people that had issues, but the solutions offered in other threads were looked to be geared toward the specific problems of that user. I have copied below the event log showing the details of my problems as well as my cable connection settings. Any help troubleshooting would be much appreciated.

Time	Priority	Description
2022-03-13, 20:32:38	Warning (5)	Dynamic Range Window violation
2022-03-13, 20:32:38	Warning (5)	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=6c:cd:d6:99:55:44;CMTS-MAC=f8:7b:20:51:01:5b;CM-QOS=1.1;CM-VER=3.1;
2022-03-13, 20:32:38	Warning (5)	Dynamic Range Window violation
2022-03-13, 20:32:38	Warning (5)	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=6c:cd:d6:99:55:44;CMTS-MAC=f8:7b:20:51:01:5b;CM-QOS=1.1;CM-VER=3.1;
2022-03-13, 20:32:33	Notice (6)	DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 3.;CM-MAC=6c:cd:d6:99:55:44;CMTS-MAC=f8:7b:20:51:01:5b;CM-QOS=1.1;CM-VER=3.1;
2022-03-13, 20:32:32	Notice (6)	TLV-11 - unrecognized OID;CM-MAC=6c:cd:d6:99:55:44;CMTS-MAC=f8:7b:20:51:01:5b;CM-QOS=1.1;CM-VER=3.1;
2022-03-13, 20:32:31	Warning (5)	DHCP WARNING - Non-critical field invalid in response ;CM-MAC=6c:cd:d6:99:55:44;CMTS-MAC=f8:7b:20:51:01:5b;CM-QOS=1.1;CM-VER=3.1;
2022-03-13, 20:32:28	Notice (6)	Honoring MDD; IP provisioning mode = IPv4
2022-03-13, 20:31:39	Notice (6)	CM-STATUS message sent. Event Type Code: 1; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=6c:cd:d6:99:55:44;CMTS-MAC=f8:7b:20:51:01:5b;CM-QOS=1.1;CM-VER=3.1;
2022-03-13, 20:31:38	Warning (5)	MDD message timeout;CM-MAC=6c:cd:d6:99:55:44;CMTS-MAC=f8:7b:20:51:01:5b;CM-QOS=1.1;CM-VER=3.1;

<tabindex=-1>Startup Procedure</tabindex=-1>

Procedure	Status	Comment
Acquire Downstream Channel	699000000 Hz	Locked
Connectivity State	OK	Operational
Boot State	OK	Operational
Security	Enable	BPI+
IP Provisioning Mode	Honor MDD	IPv4 only

<tabindex=-1>Downstream Bonded Channels</tabindex=-1>

Channel	Lock Status	Modulation	Channel ID	Frequency	Power	SNR / MER	Unerrored Codewords	Correctable Codewords	Uncorrectable Codewords
1	Locked	QAM256	32	699000000 Hz	6.3 dBmV	41.7 dB	2760803576	0	0
2	Locked	QAM256	1	495000000 Hz	4.4 dBmV	42.2 dB	2756947189	0	0
3	Locked	QAM256	2	501000000 Hz	4.9 dBmV	42.2 dB	2756953270	0	0
4	Locked	QAM256	3	507000000 Hz	4.6 dBmV	42.0 dB	2756960151	0	0
5	Locked	QAM256	4	513000000 Hz	4.8 dBmV	42.1 dB	2756965420	0	0
6	Locked	QAM256	5	519000000 Hz	4.1 dBmV	41.7 dB	2756972594	0	0
7	Locked	QAM256	6	525000000 Hz	4.6 dBmV	41.9 dB	2756979538	0	0
8	Locked	QAM256	7	531000000 Hz	4.1 dBmV	41.7 dB	2756986840	2	0
9	Locked	QAM256	8	537000000 Hz	4.1 dBmV	41.7 dB	2756992360	0	0
10	Locked	QAM256	9	543000000 Hz	3.8 dBmV	41.6 dB	2756999329	0	0
11	Locked	QAM256	10	549000000 Hz	3.9 dBmV	41.5 dB	2757009870	0	0
12	Locked	QAM256	11	555000000 Hz	4.0 dBmV	41.7 dB	2757016275	0	0
13	Locked	QAM256	12	561000000 Hz	4.2 dBmV	41.8 dB	2757022482	0	0
14	Locked	QAM256	13	567000000 Hz	3.9 dBmV	41.4 dB	2757029338	0	0
15	Locked	QAM256	14	573000000 Hz	4.1 dBmV	41.5 dB	2757035404	0	0
16	Locked	QAM256	15	579000000 Hz	4.2 dBmV	41.5 dB	2757042082	0	0
17	Locked	QAM256	16	585000000 Hz	4.2 dBmV	41.6 dB	2757049228	0	0
18	Locked	QAM256	17	591000000 Hz	4.2 dBmV	41.5 dB	2757055031	0	0
19	Locked	QAM256	18	597000000 Hz	4.2 dBmV	41.5 dB	2757061265	2	0
20	Locked	QAM256	19	603000000 Hz	4.3 dBmV	41.4 dB	2757067804	1	0
21	Locked	QAM256	20	609000000 Hz	3.8 dBmV	41.3 dB	2757078966	0	0
22	Locked	QAM256	21	615000000 Hz	4.4 dBmV	41.3 dB	2757084938	0	0
23	Locked	QAM256	22	621000000 Hz	3.9 dBmV	41.3 dB	2757092256	1	0
24	Locked	QAM256	23	627000000 Hz	4.4 dBmV	41.3 dB	2757098933	0	0
25	Locked	QAM256	24	633000000 Hz	3.9 dBmV	41.1 dB	2757104970	0	0
26	Locked	QAM256	25	657000000 Hz	4.4 dBmV	41.3 dB	2757111432	0	0
27	Locked	QAM256	26	663000000 Hz	5.2 dBmV	41.6 dB	2757118093	0	0
28	Locked	QAM256	27	669000000 Hz	5.0 dBmV	41.4 dB	2757125148	0	0
29	Locked	QAM256	28	675000000 Hz	5.5 dBmV	41.1 dB	2757131570	0	0
30	Locked	QAM256	29	681000000 Hz	5.2 dBmV	41.5 dB	2757137847	0	0
31	Locked	QAM256	30	687000000 Hz	5.8 dBmV	41.7 dB	2757135070	0	0
32	Locked	QAM256	31	693000000 Hz	6.0 dBmV	41.5 dB	2757127911	0	0

<tabindex=-1>Upstream Bonded Channels</tabindex=-1>

Channel	Lock Status	Modulation	Channel ID	Frequency	Power
1	Locked	ATDMA	1	16200000 Hz	46.0 dBmV
2	Locked	ATDMA	2	22700000 Hz	47.0 dBmV
3	Locked	ATDMA	3	29200000 Hz	47.0 dBmV
4	Locked	ATDMA	4	35700000 Hz	48.0 dBmV
5	Not Locked	Unknown	0	0 Hz	0.0 dBmV
6	Not Locked	Unknown	0	0 Hz	0.0 dBmV
7	Not Locked	Unknown	0	0 Hz	0.0 dBmV
8	Not Locked	Unknown	0	0 Hz	0.0 dBmV

<tabindex=-1>Downstream OFDM Channels</tabindex=-1>

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, 3	159	771000000 Hz	7.8 dBmV	34.5 dB	646 ~ 3449	5262436925	36136169	28
2	Not Locked	0	0	0 Hz	0.7 dBmV	0.0 dB	0 ~ 4095	0	0	0

<tabindex=-1>Upstream OFDMA Channels</tabindex=-1>

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

FURRYe38 · Answer

Have the ISP check the signal and line quality UP to the modem.&nbsp;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.&nbsp;Be sure your using good quality RG6 coax cable up to the modem.&nbsp;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-Modems/m-p/1530376#M12853https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router?article=24311https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html
https://highspeed.tips/docsis-events/

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CM1000v2 MDD Message Timeout

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