CM1200 Downstream light blinking and Cox wont help

jpwesterman · ‎2023-01-23

For a couple of weeks now we will get sudden drops during the day needing to restart the modem and router to gain service. Since then the downstream arrow has been blinking. I contacted Cox and of course, they blame it on the equipment that isn't theirs. I'm seeing quite a few errors and included them below.

Time	Priority	Description
Mon Jan 23 16:06:21 2023	Notice (6)	CM-STATUS message sent. Event Type Code: 24; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2 3.;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=b0:8b:d0:23:85:5d;CM-QOS=1.1;CM-VER=3.1;
Mon Jan 23 16:05:55 2023	Notice (6)	CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0 2 3.;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=b0:8b:d0:23:85:5d;CM-QOS=1.1;CM-VER=3.1;
Mon Jan 23 16:02:59 2023	Notice (6)	CM-STATUS message sent. Event Type Code: 24; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2 3.;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=b0:8b:d0:23:85:5d;CM-QOS=1.1;CM-VER=3.1;
Mon Jan 23 16:02:34 2023	Notice (6)	CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0 2 3.;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=b0:8b:d0:23:85:5d;CM-QOS=1.1;CM-VER=3.1;
Mon Jan 23 15:54:06 2023	Critical (3)	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=b0:8b:d0:23:85:5d;CM-QOS=1.1;CM-VER=3.1;
Mon Jan 23 15:50:19 2023	Notice (6)	CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0.;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=b0:8b:d0:23:85:5d;CM-QOS=1.1;CM-VER=3.1;
Mon Jan 23 15:50:09 2023	Notice (6)	CM-STATUS message sent. Event Type Code: 20; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=b0:8b:d0:23:85:5d;CM-QOS=1.1;CM-VER=3.1;
Mon Jan 23 15:50:09 2023	Notice (6)	CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0.;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=b0:8b:d0:23:85:5d;CM-QOS=1.1;CM-VER=3.1;
Mon Jan 23 15:50:08 2023	Critical (3)	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=b0:8b:d0:23:85:5d;CM-QOS=1.1;CM-VER=3.1;
Mon Jan 23 15:49:01 2023	Warning (5)	Dynamic Range Window violation
Mon Jan 23 15:49:01 2023	Warning (5)	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=b0:8b:d0:23:85:5d;CM-QOS=1.1;CM-VER=3.1;
Mon Jan 23 15:49:00 2023	Warning (5)	Dynamic Range Window violation
Mon Jan 23 15:49:00 2023	Warning (5)	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=b0:8b:d0:23:85:5d;CM-QOS=1.1;CM-VER=3.1;
Mon Jan 23 15:49:00 2023	Warning (5)	Dynamic Range Window violation
Mon Jan 23 15:49:00 2023	Warning (5)	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=b0:8b:d0:23:85:5d;CM-QOS=1.1;CM-VER=3.1;
Mon Jan 23 15:49:00 2023	Warning (5)	Dynamic Range Window violation
Mon Jan 23 15:49:00 2023	Warning (5)	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=b0:8b:d0:23:85:5d;CM-QOS=1.1;CM-VER=3.1;
Mon Jan 23 15:49:00 2023	Warning (5)	Dynamic Range Window violation
Mon Jan 23 15:49:00 2023	Warning (5)	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=b0:8b:d0:23:85:5d;CM-QOS=1.1;CM-VER=3.1;
Mon Jan 23 15:49:00 2023	Warning (5)	Dynamic Range Window violation
Mon Jan 23 15:49:00 2023	Warning (5)	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=b0:8b:d0:23:85:5d;CM-QOS=1.1;CM-VER=3.1;
Mon Jan 23 15:48:59 2023	Warning (5)	REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=b0:8b:d0:23:85:5d;CM-QOS=1.1;CM-VER=3.1;
Mon Jan 23 15:48:55 2023	Notice (6)	DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=b0:8b:d0:23:85:5d;CM-QOS=1.1;CM-VER=3.1;
Mon Jan 23 15:48:50 2023	Notice (6)	TLV-11 - unrecognized OID;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=b0:8b:d0:23:85:5d;CM-QOS=1.1;CM-VER=3.1;
Mon Jan 23 15:48:49 2023	Warning (5)	DHCP WARNING - Non-critical field invalid in response ;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=b0:8b:d0:23:85:5d;CM-QOS=1.1;CM-VER=3.1;
Time Not Established	Notice (6)	Honoring MDD; IP provisioning mode = IPv4
Time Not Established	Critical (3)	No Ranging Response received - T3 time-out;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=b0:8b:d0:23:85:5d;CM-QOS=1.1;CM-VER=3.1;
Time Not Established	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Mon Jan 23 15:47:32 2023	Critical (3)	Resetting the cable modem due to docsDevResetNow
Mon Jan 23 15:44:16 2023	Critical (3)	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=b0:8b:d0:23:85:5d;CM-QOS=1.1;CM-VER=3.1;
Mon Jan 23 15:19:45 2023	Notice (6)	CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0.;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=b0:8b:d0:23:85:5d;CM-QOS=1.1;CM-VER=3.1;
Mon Jan 23 15:19:39 2023	Critical (3)	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=b0:8b:d0:23:85:5d;CM-QOS=1.1;CM-VER=3.1;
Mon Jan 23 15:19:35 2023	Notice (6)	CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0.;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=b0:8b:d0:23:85:5d;CM-QOS=1.1;CM-VER=3.1;
Mon Jan 23 15:19:25 2023	Notice (6)	CM-STATUS message sent. Event Type Code: 20; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=b0:8b:d0:23:85:5d;CM-QOS=1.1;CM-VER=3.1;
Mon Jan 23 15:19:25 2023	Notice (6)	CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0.;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=b0:8b:d0:23:85:5d;CM-QOS=1.1;CM-VER=3.1;
Mon Jan 23 15:19:15 2023	Notice (6)	CM-STATUS message sent. Event Type Code: 20; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=b0:8b:d0:23:85:5d;CM-QOS=1.1;CM-VER=3.1;
Mon Jan 23 15:19:15 2023	Notice (6)	CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 0.;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=b0:8b:d0:23:85:5d;CM-QOS=1.1;CM-VER=3.1;
Mon Jan 23 15:18:42 2023	Critical (3)	Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=b0:8b:d0:23:85:5d;CM-QOS=1.1;CM-VER=3.1;
Mon Jan 23 15:18:34 2023	Warning (5)	Dynamic Range Window violation
Mon Jan 23 15:18:34 2023	Warning (5)	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=6c:cd:d6:6b:b5:24;CMTS-MAC=b0:8b:d0:23:85:5d;CM-QOS=1.1;CM-VER=3.1;

FURRYe38 · ‎2023-01-23

What Firmware version is currently loaded?
Please post a copy and paste of the modems connection status page.
https://kb.netgear.com/30007/How-do-I-obtain-the-cable-connection-information-from-a-NETGEAR-cable-m...

Be sure your using a good quality LAN cable between the modem and router. CAT6 is recommended.
What is the brand and model of the host wifi router connected to the modem?

You have Criticals and Warnings the the ISP needs to review and help resolve from there side.

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.
Start with removing any amplifiers, signal attenuators, or splitters from the coax.
From there check the line for kinks, damage, moisture in the line.
Check the connectors for improperly made ends, foil touching the copper coax line, loose connections, bad/old/cheap connectors, or corroded connections. Replace them if you do.
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://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router
https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html

plemans · ‎2023-01-24

Your log indicates line issues.

But its tough to tell without the cable connections page. Sometimes its to low of power and sometimes to high.

Or sometimes its just straight up issues.

If you can post that back here, it gives us a little direction to point you in.

In the mean time, you can start with removing any amplifiers, signal attenuators, or splitters from the coax.
From there check the line for kinks, damage, moisture in the line.
Check the connectors for improperly made ends, foil touching the copper coax line, loose connections, bad/old/cheap connectors, or corroded connections. Replace them if you do.
If you can, simply connect the modem right where the coax comes into the home. This prevents wiring in the home from being the issue. And some ISP’s charge if the wiring issue is in the home. So this helps prevent this.

jpwesterman · ‎2023-01-24

Hey, thanks for the quick response. Ill try that and see. Please find the cable connection below.

Startup Procedure

Procedure	Status	Comment
Acquire Downstream Channel	429000000 Hz	Locked
Connectivity State	OK	Operational
Boot State	OK	Operational
Security	Enabled	BPI+
IP Provisioning Mode	Honor MDD	honorMdd(4)

Downstream Bonded Channels

Channel	Lock Status	Modulation	Channel ID	Frequency	Power	SNR	Correctables	Uncorrectables
1	Locked	QAM256	45	429000000 Hz	-1.4 dBmV	44.1 dB	47	178
2	Locked	QAM256	1	675000000 Hz	-0.6 dBmV	43.1 dB	25	44
3	Locked	QAM256	2	681000000 Hz	-0.9 dBmV	44.1 dB	14	54
4	Locked	QAM256	3	687000000 Hz	-1.2 dBmV	43.9 dB	26	46
5	Locked	QAM256	4	693000000 Hz	-1.9 dBmV	43.5 dB	25	45
6	Locked	QAM256	5	699000000 Hz	-2.4 dBmV	43.1 dB	19	55
7	Locked	QAM256	6	705000000 Hz	-2.7 dBmV	42.9 dB	55	27
8	Locked	QAM256	7	711000000 Hz	-2.7 dBmV	42.9 dB	28	29
9	Locked	QAM256	8	717000000 Hz	-2.3 dBmV	43.1 dB	35	23
10	Locked	QAM256	9	723000000 Hz	-1.9 dBmV	43.4 dB	30	23
11	Locked	QAM256	10	729000000 Hz	-1.6 dBmV	43.5 dB	34	26
12	Locked	QAM256	11	735000000 Hz	-1.4 dBmV	43.6 dB	26	42
13	Locked	QAM256	12	741000000 Hz	-1.4 dBmV	43.5 dB	18	51
14	Locked	QAM256	13	747000000 Hz	-1.5 dBmV	43.4 dB	26	48
15	Locked	QAM256	14	753000000 Hz	-1.6 dBmV	43.4 dB	21	60
16	Locked	QAM256	15	759000000 Hz	-1.6 dBmV	43.4 dB	15	56
17	Locked	QAM256	16	765000000 Hz	-1.8 dBmV	43.3 dB	160	26
18	Locked	QAM256	33	357000000 Hz	-0.3 dBmV	44.6 dB	34	75
19	Locked	QAM256	34	363000000 Hz	-0.4 dBmV	44.6 dB	24	85
20	Locked	QAM256	35	369000000 Hz	-0.6 dBmV	44.5 dB	26	107
21	Locked	QAM256	36	375000000 Hz	-0.6 dBmV	44.5 dB	31	152
22	Locked	QAM256	37	381000000 Hz	-0.6 dBmV	44.5 dB	49	165
23	Locked	QAM256	38	387000000 Hz	-0.6 dBmV	44.5 dB	35	203
24	Locked	QAM256	39	393000000 Hz	-0.6 dBmV	44.5 dB	40	218
25	Locked	QAM256	40	399000000 Hz	-0.6 dBmV	44.5 dB	33	216
26	Locked	QAM256	41	405000000 Hz	-0.6 dBmV	44.5 dB	44	200
27	Locked	QAM256	42	411000000 Hz	-0.7 dBmV	44 dB	67	212
28	Locked	QAM256	43	417000000 Hz	-1 dBmV	44.4 dB	63	206
29	Locked	QAM256	44	423000000 Hz	-1.2 dBmV	44.2 dB	71	213
30	Locked	QAM256	46	435000000 Hz	-1.5 dBmV	44 dB	77	183
31	Locked	QAM256	47	441000000 Hz	-1.8 dBmV	44 dB	17	102
32	Locked	QAM256	48	447000000 Hz	-1.8 dBmV	44 dB	153	420

Upstream Bonded Channels

Channel	Lock Status	US Channel Type	Channel ID	Symbol Rate	Frequency	Power
1	Locked	ATDMA	1	5120 Ksym/sec	17400000 Hz	39 dBmV
2	Locked	ATDMA	2	5120 Ksym/sec	23900000 Hz	39.5 dBmV
3	Locked	ATDMA	3	5120 Ksym/sec	30300000 Hz	39.5 dBmV
4	Locked	ATDMA	4	5120 Ksym/sec	36700000 Hz	39.5 dBmV
5	Locked	ATDMA	5	5120 Ksym/sec	60000000 Hz	39.5 dBmV
6	Locked	ATDMA	6	5120 Ksym/sec	67000000 Hz	40 dBmV
7	Locked	ATDMA	7	5120 Ksym/sec	74000000 Hz	40.8 dBmV
8	Locked	ATDMA	8	5120 Ksym/sec	81000000 Hz	40.8 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 ,3	159	300000000 Hz	0.4 dBmV	44.9 dB	2216 ~ 5975	1909698306	234000733	877
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

FURRYe38 · ‎2023-01-28

You have Correctables and Un-correctables that should be mostly zeros.

Check all fittings and cable runs. Remove any splitters as suggested. Ensure coax jacks are snug and inplace well.

@jpwesterman

CM1200 Downstream light blinking and Cox wont help

CM1200 Downstream light blinking and Cox wont help

Re: CM1200 Downstream light blinking and Cox wont help

Re: CM1200 Downstream light blinking and Cox wont help

Re: CM1200 Downstream light blinking and Cox wont help

Re: CM1200 Downstream light blinking and Cox wont help