random disconnects

hi, CM1200 modem seems to randomly disconnect every couple days, been happening for about 6 months now

and sometimes i have to do a hard reset to get connected again. its annoying for sure. ive looked to

netgear for updates but they say the cable internet provider is responsible for updates- so not sure that

is the issue. but maybe the cable tap a pole should be checked? weve had alot of windy weather for sure and wires

certainly swaying in wind alot. this is from the modem log:

Time	Priority	Description
Mon Jan 02 23:28:04 2023	Warning (5)	Dynamic Range Window violation
Mon Jan 02 23:28:04 2023	Warning (5)	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Mon Jan 02 23:28:04 2023	Notice (6)	CM-STATUS message sent. Event Type Code: 5; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Mon Jan 02 23:27:56 2023	Warning (5)	REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Mon Jan 02 23:27:50 2023	Notice (6)	DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Mon Jan 02 23:27:49 2023	Notice (6)	TLV-11 - unrecognized OID;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Mon Jan 02 23:27:09 2023	Notice (6)	Honoring MDD; IP provisioning mode = IPv6
Mon Jan 02 23:26:52 2023	Critical (3)	No Ranging Response received - T3 time-out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Mon Jan 02 23:26:40 2023	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Mon Jan 02 23:23:07 2023	Critical (3)	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Mon Jan 02 23:23:07 2023	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Mon Jan 02 23:22:47 2023	Critical (3)	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Mon Jan 02 23:22:47 2023	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Mon Jan 02 23:22:28 2023	Critical (3)	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Mon Jan 02 23:22:28 2023	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Mon Jan 02 23:22:07 2023	Critical (3)	Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Mon Jan 02 23:22:07 2023	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Mon Jan 02 23:21:14 2023	Warning (5)	MDD message timeout;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Mon Jan 02 23:21:14 2023	Critical (3)	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

Responses

CC_TimothyS

Recognized Contributor

•

22 Messages

2 years ago

Thank you for reaching out to us on the forums, @jbhb1! Six months is a long time to be dealing with this, but you're in the right place. From the lo you provided, it looks like late night is the typical time that you see this issue crop up. Is that consistent, or do the drops happen randomly throughout the day?

10

0

jbhb1

New Member

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4 Messages

@Comcast_TimothyS Hi Tim, more often than not it happens in afternoon, seems to rarely happen in morning hours, generally wind is calm in mornings and kicks up in afternoons - but that is just speculating.

Tue Dec 27 13:00:09 2022	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=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Tue Dec 27 12:59:38 2022	Notice (6)	CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2 3.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Tue Dec 27 07:15:26 2022	Notice (6)	CM-STATUS message sent. Event Type Code: 5; Chan ID: 6; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Fri Dec 23 16:43:52 2022	Warning (5)	DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Fri Dec 23 16:43:50 2022	Critical (3)	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Fri Dec 23 16:37:42 2022	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=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Fri Dec 23 16:37:16 2022	Notice (6)	CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2 3.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Fri Dec 23 16:37:09 2022	Notice (6)	CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Fri Dec 23 16:31:54 2022	Notice (6)	CM-STATUS message sent. Event Type Code: 5; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Fri Dec 23 16:31:46 2022	Warning (5)	Dynamic Range Window violation
Fri Dec 23 16:31:46 2022	Warning (5)	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Fri Dec 23 16:31:46 2022	Warning (5)	Dynamic Range Window violation
Fri Dec 23 16:31:46 2022	Warning (5)	RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Fri Dec 23 16:31:46 2022	Warning (5)	REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Fri Dec 23 16:31:40 2022	Notice (6)	DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;
Fri Dec 23 16:31:35 2022	Notice (6)	TLV-11 - unrecognized OID;CM-MAC=[Edited: "Personal Information"];CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;

(edited)

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2 years ago

0

jbhb1

New Member

•

4 Messages

as i type it is working fine at the moment and modem shows this info:

Apply Cancel

Frequency start Value

This field below allows you to modify the frequency the cable modem start with its scan during initialization and registration. Enter the new start frequency and restart the cable modem for it to take effect.

Starting Frequency

Startup Procedure

Procedure	Status	Comment
Acquire Downstream Channel	603000000 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	29	603000000 Hz	1.3 dBmV	40.7 dB	730	240
2	Locked	QAM256	13	501000000 Hz	1.9 dBmV	42.1 dB	197	183
3	Locked	QAM256	14	507000000 Hz	1.9 dBmV	41.9 dB	182	205
4	Locked	QAM256	15	513000000 Hz	2 dBmV	42 dB	7619	542
5	Locked	QAM256	16	519000000 Hz	2.1 dBmV	41.9 dB	513	251
6	Locked	QAM256	17	525000000 Hz	2.2 dBmV	41.8 dB	54	120
7	Locked	QAM256	18	531000000 Hz	2.1 dBmV	41.6 dB	859	263
8	Locked	QAM256	19	537000000 Hz	1.8 dBmV	41.2 dB	1306	249
9	Locked	QAM256	20	543000000 Hz	1.5 dBmV	41 dB	1772	240
10	Locked	QAM256	21	555000000 Hz	1.5 dBmV	40.9 dB	3088	288
11	Locked	QAM256	22	561000000 Hz	1.7 dBmV	41.2 dB	2769	295
12	Locked	QAM256	23	567000000 Hz	1.6 dBmV	41 dB	3627	305
13	Locked	QAM256	24	573000000 Hz	1.7 dBmV	41.1 dB	2543	289
14	Locked	QAM256	25	579000000 Hz	1.6 dBmV	41 dB	4141	349
15	Locked	QAM256	26	585000000 Hz	1.4 dBmV	41 dB	2685	328
16	Locked	QAM256	27	591000000 Hz	1.3 dBmV	40.9 dB	1736	314
17	Locked	QAM256	28	597000000 Hz	1.3 dBmV	40.7 dB	733	313
18	Locked	QAM256	30	609000000 Hz	1.3 dBmV	40.8 dB	339	304
19	Locked	QAM256	31	615000000 Hz	1.3 dBmV	40.8 dB	170	280
20	Locked	QAM256	32	621000000 Hz	1.3 dBmV	40.7 dB	99	288
21	Locked	QAM256	33	627000000 Hz	1 dBmV	40.3 dB	57	130
22	Locked	QAM256	34	633000000 Hz	0.9 dBmV	40 dB	77	120
23	Locked	QAM256	35	639000000 Hz	0.7 dBmV	39.7 dB	88	120
24	Locked	QAM256	36	645000000 Hz	0.6 dBmV	39.8 dB	89	130
25	Locked	QAM256	37	651000000 Hz	0.6 dBmV	40 dB	227	255
26	Locked	QAM256	38	657000000 Hz	0.5 dBmV	40 dB	113	141
27	Locked	QAM256	39	663000000 Hz	0.6 dBmV	40 dB	80	162
28	Locked	QAM256	40	669000000 Hz	0.7 dBmV	39.9 dB	549	1174
29	Locked	QAM256	41	675000000 Hz	0.9 dBmV	39.5 dB	138	171
30	Locked	QAM256	42	681000000 Hz	0.7 dBmV	39.7 dB	89	233
31	Locked	QAM256	43	687000000 Hz	0.4 dBmV	39.4 dB	223	228
32	Locked	QAM256	44	693000000 Hz	-0.3 dBmV	39 dB	4287	386

Upstream Bonded Channels

Channel	Lock Status	US Channel Type	Channel ID	Symbol Rate	Frequency	Power
1	Locked	ATDMA	10	5120 Ksym/sec	16400000 Hz	42.3 dBmV
2	Locked	ATDMA	11	5120 Ksym/sec	22800000 Hz	41.8 dBmV
3	Locked	ATDMA	12	5120 Ksym/sec	29200000 Hz	41.3 dBmV
4	Locked	ATDMA	13	5120 Ksym/sec	35600000 Hz	39.8 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 ,3	159	702000000 Hz	1.0 dBmV	39.7 dB	1126 ~ 2969	42486322283	11147084052	33213
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

Extended Upstream Transmit Power

Enable Extended Upstream Transmit Power

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2 years ago

0

Comcast_Raul

Official Employee

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40 Messages

Good morning, @jbhb1. I apologize for the inconvenience of having your modem disconnecting is causing you. I'd be more than happy to review your account to see what we can do to help resolve this problem.

In order to get started, can you please click the chat bubble in the top right corner and send a message to our "Comcast Business" handle?

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2 years ago

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Comcast Business

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222 Messages

It looks like you have attempted to post some personal information in our public forum. We have suppressed that information to keep your personal data private. Please review our Forum Guidelines below for additional information as to the type of information we want to help you protect: https://forums.businesshelp.comcast.com/conversations/announcements/comcast-businesssupport-community-guidelines/5fe0a62cc5375f08cd9613e5

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2 years ago

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Comcast Business

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222 Messages

It looks like you have attempted to post some personal information in our public forum. We have suppressed that information to keep your personal data private. Please review our Forum Guidelines below for additional information as to the type of information we want to help you protect: https://forums.businesshelp.comcast.com/conversations/announcements/comcast-businesssupport-community-guidelines/5fe0a62cc5375f08cd9613e5

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2 years ago

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