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Please help... connectivity issues

Regular Visitor

Please help... connectivity issues

Every once in awhile, I would lose internet and have to reboot everything (modem - Netgear CM1200 & router - Nighthawk R7000) to get back online. Maybe every few weeks, never checked modem reports or anything. Suddenly, as of Sunday (10/20) I am losing connection multiple times a day. I work from home, and it is destroying my ability to work. 

On Sunday, there was apparently a Comcast worker somewhere in the area, and that explained my initial issues I guess. But after they finished their work yesterday, is when I am now experiencing multiple disconnections and having to restart my equipment repeatedly. A Comcast tech came out today and replaced the single splitter I have with one that lowers the power signal a bit, but the issues has continued since then. 

 

I am a bit tech savy, but more on the software side. Most of what follows has me stumped. FYI: I only have one splitter between the modem and the incoming line (and that splitter was replaced with a new one today as described above). I have the "Enable Extended Upstream Transmit Power" box checked as it was checked by default when I setup the modem. 

 

Thank you for any help!

Here is the modem report from Sunday (replaced my MAC with zeros):

 

 

Time

Priority

Description

Sun Oct 20 17:41:13 2019

Critical (3)

SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Sun Oct 20 17:29:09 2019

Warning (5)

Dynamic Range Window violation

Sun Oct 20 17:29:09 2019

Warning (5)

RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Sun Oct 20 17:28:58 2019

Notice (6)

TLV-11 - unrecognized OID;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Time Not Established

Notice (6)

Honoring MDD; IP provisioning mode = IPv6

Time Not Established

Critical (3)

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;

Sun Oct 20 17:23:51 2019

Warning (5)

Dynamic Range Window violation

Sun Oct 20 17:23:51 2019

Warning (5)

RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Sun Oct 20 17:23:50 2019

Warning (5)

Dynamic Range Window violation

Sun Oct 20 17:23:50 2019

Warning (5)

RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Sun Oct 20 17:23:38 2019

Notice (6)

TLV-11 - unrecognized OID;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Time Not Established

Notice (6)

Honoring MDD; IP provisioning mode = IPv6

Time Not Established

Critical (3)

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;

Sun Oct 20 17:22:05 2019

Critical (3)

Resetting the cable modem due to docsDevResetNow

Sun Oct 20 17:18:38 2019

Critical (3)

SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=200:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Sun Oct 20 17:06:33 2019

Warning (5)

Dynamic Range Window violation

Sun Oct 20 17:06:33 2019

Warning (5)

RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Sun Oct 20 17:06:22 2019

Notice (6)

TLV-11 - unrecognized OID;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Time Not Established

Notice (6)

Honoring MDD; IP provisioning mode = IPv6

Time Not Established

Critical (3)

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;

Sun Oct 20 10:57:50 2019

Critical (3)

Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Sun Oct 20 10:57:06 2019

Critical (3)

SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Sun Oct 20 10:55:24 2019

Warning (5)

Dynamic Range Window violation

Sun Oct 20 10:55:24 2019

Warning (5)

RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Sun Oct 20 10:55:23 2019

Warning (5)

Dynamic Range Window violation

Sun Oct 20 10:55:23 2019

Warning (5)

RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Sun Oct 20 10:55:10 2019

Notice (6)

TLV-11 - unrecognized OID;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Time Not Established

Notice (6)

Honoring MDD; IP provisioning mode = IPv6

Time Not Established

Critical (3)

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;

Sun Oct 20 10:51:06 2019

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=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Sun Oct 20 10:51:05 2019

Warning (5)

MDD message timeout;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Sun Oct 20 10:51:00 2019

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=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Sun Oct 20 10:50:59 2019

Notice (6)

CM-STATUS message sent. Event Type Code: 23; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Sun Oct 20 10:50:59 2019

Notice (6)

CM-STATUS message sent. Event Type Code: 22; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Sun Oct 20 10:50:51 2019

Critical (3)

No Ranging Response received - T3 time-out;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Sun Oct 20 10:50:31 2019

Warning (5)

MDD message timeout;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Sun Oct 20 10:50:30 2019

Critical (3)

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Sun Oct 20 10:50:27 2019

Notice (6)

CM-STATUS message sent. Event Type Code: 5; Chan ID: 22; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Sun Oct 20 10:50:25 2019

Notice (6)

CM-STATUS message sent. Event Type Code: 4; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Sun Oct 20 10:50:22 2019

Notice (6)

CM-STATUS message sent. Event Type Code: 22; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

 

 

Here is my modem status as of yesterday evening, after the issues, but before the tech came out today:

 

 

Startup Procedure

Procedure

Status

Comment

Acquire Downstream Channel

483000000 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

5

483000000 Hz

11.1 dBmV

43.2 dB

0

0

2

Locked

QAM256

6

489000000 Hz

11.2 dBmV

43.2 dB

0

0

3

Locked

QAM256

7

495000000 Hz

11.3 dBmV

43.2 dB

0

0

4

Locked

QAM256

8

507000000 Hz

11.5 dBmV

43.1 dB

0

0

5

Locked

QAM256

9

513000000 Hz

11.6 dBmV

43.2 dB

0

0

6

Locked

QAM256

10

519000000 Hz

11.7 dBmV

43.2 dB

0

0

7

Locked

QAM256

11

525000000 Hz

11.8 dBmV

43.2 dB

0

0

8

Locked

QAM256

12

531000000 Hz

11.9 dBmV

43.3 dB

0

0

9

Locked

QAM256

13

537000000 Hz

12.2 dBmV

43.3 dB

0

0

10

Locked

QAM256

14

543000000 Hz

12.3 dBmV

43.5 dB

0

0

11

Locked

QAM256

15

549000000 Hz

12.4 dBmV

43.5 dB

0

0

12

Locked

QAM256

16

555000000 Hz

12.4 dBmV

43.4 dB

0

0

13

Locked

QAM256

17

561000000 Hz

12.6 dBmV

43.4 dB

0

0

14

Locked

QAM256

18

567000000 Hz

12.5 dBmV

43.4 dB

0

0

15

Locked

QAM256

19

573000000 Hz

12.6 dBmV

43.4 dB

0

0

16

Locked

QAM256

20

579000000 Hz

12.6 dBmV

43.4 dB

0

0

17

Locked

QAM256

21

585000000 Hz

12.7 dBmV

43.4 dB

0

0

18

Locked

QAM256

22

591000000 Hz

12.5 dBmV

43.3 dB

0

0

19

Locked

QAM256

23

597000000 Hz

12.6 dBmV

43.3 dB

0

0

20

Locked

QAM256

24

603000000 Hz

12.4 dBmV

43.2 dB

0

0

21

Locked

QAM256

25

609000000 Hz

12.4 dBmV

43.1 dB

0

0

22

Locked

QAM256

26

615000000 Hz

12.2 dBmV

43 dB

0

0

23

Locked

QAM256

27

621000000 Hz

12.4 dBmV

43 dB

0

0

24

Locked

QAM256

28

627000000 Hz

12.1 dBmV

43 dB

0

0

25

Locked

QAM256

29

633000000 Hz

12.1 dBmV

42.9 dB

0

0

26

Locked

QAM256

30

639000000 Hz

11.8 dBmV

42.7 dB

0

0

27

Locked

QAM256

31

645000000 Hz

11.9 dBmV

42.6 dB

0

0

28

Locked

QAM256

32

651000000 Hz

12 dBmV

42.7 dB

0

0

29

Locked

QAM256

33

657000000 Hz

12.2 dBmV

42.8 dB

0

0

30

Locked

QAM256

34

663000000 Hz

12.2 dBmV

42.8 dB

0

0

31

Locked

QAM256

35

669000000 Hz

12.3 dBmV

42.7 dB

0

0

32

Locked

QAM256

36

675000000 Hz

12 dBmV

42 dB

0

0

Upstream OFDMA Channels

Channel

Lock Status

US Channel Type

Channel ID

Symbol Rate

Frequency

Power

1

Locked

ATDMA

1

5120 Ksym/sec

35700000 Hz

36.8 dBmV

2

Locked

ATDMA

2

5120 Ksym/sec

29200000 Hz

37.3 dBmV

3

Locked

ATDMA

3

5120 Ksym/sec

22700000 Hz

36.8 dBmV

4

Locked

ATDMA

4

5120 Ksym/sec

16200000 Hz

37 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

159

690000000 Hz

13.2 dBmV

42.7 dB

1246 ~ 2849

43477194

2359

0

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

 

Current System Time:Sun Oct 20 17:50:43 2019

System Up Time:00:22:29

 

 

Now here is my modem report since the tech came out today and replaced the splitter:

 

 

Time

Priority

Description

Mon Oct 21 19:53:49 2019

Critical (3)

SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Mon Oct 21 19:41:32 2019

Notice (6)

TLV-11 - unrecognized OID;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Time Not Established

Notice (6)

Honoring MDD; IP provisioning mode = IPv6

Time Not Established

Critical (3)

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=200:00:00:00:00:00;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;

Mon Oct 21 12:03:33 2019

Critical (3)

SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Mon Oct 21 11:51:30 2019

Warning (5)

Dynamic Range Window violation

Mon Oct 21 11:51:30 2019

Warning (5)

RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Mon Oct 21 11:51:28 2019

Warning (5)

Dynamic Range Window violation

Mon Oct 21 11:51:28 2019

Warning (5)

RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Mon Oct 21 11:51:18 2019

Notice (6)

TLV-11 - unrecognized OID;CM-MAC=200:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Time Not Established

Notice (6)

Honoring MDD; IP provisioning mode = IPv6

Time Not Established

Critical (3)

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;

Mon Oct 21 10:54:36 2019

Critical (3)

SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Mon Oct 21 10:42:21 2019

Notice (6)

TLV-11 - unrecognized OID;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Time Not Established

Notice (6)

Honoring MDD; IP provisioning mode = IPv6

Time Not Established

Critical (3)

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;

Mon Oct 21 10:41:09 2019

Critical (3)

Resetting the cable modem due to docsDevResetNow

Mon Oct 21 10:38:37 2019

Warning (5)

Dynamic Range Window violation

Mon Oct 21 10:38:37 2019

Warning (5)

RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Mon Oct 21 10:38:31 2019

Notice (6)

TLV-11 - unrecognized OID;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Mon Oct 21 10:38:21 2019

Notice (6)

Honoring MDD; IP provisioning mode = IPv6

Mon Oct 21 10:38:04 2019

Critical (3)

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=00:00:00:00:00:00;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;

Mon Oct 21 10:37:30 2019

Critical (3)

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Mon Oct 21 10:37:30 2019

Critical (3)

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Mon Oct 21 10:37:10 2019

Critical (3)

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Mon Oct 21 10:37:10 2019

Critical (3)

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Mon Oct 21 10:36:51 2019

Critical (3)

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Mon Oct 21 10:36:51 2019

Critical (3)

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Mon Oct 21 10:36:30 2019

Critical (3)

Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Mon Oct 21 10:36:30 2019

Critical (3)

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Mon Oct 21 10:35:57 2019

Warning (5)

MDD message timeout;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Mon Oct 21 10:35:56 2019

Critical (3)

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Mon Oct 21 10:35:51 2019

Warning (5)

MDD message timeout;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Mon Oct 21 10:35:50 2019

Critical (3)

SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Mon Oct 21 09:15:38 2019

Warning (5)

Dynamic Range Window violation

Mon Oct 21 09:15:38 2019

Warning (5)

RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

Mon Oct 21 09:04:39 2019

Warning (5)

Dynamic Range Window violation

Mon Oct 21 09:04:39 2019

Warning (5)

RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=00:00:00:00:00:00;CMTS-MAC=dc:eb:94:b5:45:5f;CM-QOS=1.1;CM-VER=3.1;

 

 

And here is my modem status as of tonight after having to restart my devices multiple times after the tech's visit:

 

 

Startup Procedure

Procedure

Status

Comment

Acquire Downstream Channel

537000000 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

13

537000000 Hz

8.9 dBmV

43.6 dB

0

0

2

Locked

QAM256

5

483000000 Hz

7.9 dBmV

43.6 dB

0

0

3

Locked

QAM256

6

489000000 Hz

8 dBmV

43.5 dB

0

0

4

Locked

QAM256

7

495000000 Hz

8.1 dBmV

43.5 dB

0

0

5

Locked

QAM256

8

507000000 Hz

8.3 dBmV

43.5 dB

0

0

6

Locked

QAM256

9

513000000 Hz

8.3 dBmV

43.5 dB

0

0

7

Locked

QAM256

10

519000000 Hz

8.5 dBmV

43.5 dB

0

0

8

Locked

QAM256

11

525000000 Hz

8.6 dBmV

43.5 dB

0

0

9

Locked

QAM256

12

531000000 Hz

8.6 dBmV

43.5 dB

0

0

10

Locked

QAM256

14

543000000 Hz

8.9 dBmV

43.7 dB

0

0

11

Locked

QAM256

15

549000000 Hz

9.1 dBmV

43.8 dB

0

0

12

Locked

QAM256

16

555000000 Hz

9 dBmV

43.6 dB

0

0

13

Locked

QAM256

17

561000000 Hz

9.2 dBmV

43.6 dB

0

0

14

Locked

QAM256

18

567000000 Hz

9.1 dBmV

43.6 dB

0

0

15

Locked

QAM256

19

573000000 Hz

9.1 dBmV

43.6 dB

0

0

16

Locked

QAM256

20

579000000 Hz

9.2 dBmV

43.6 dB

0

0

17

Locked

QAM256

21

585000000 Hz

9 dBmV

43.5 dB

0

0

18

Locked

QAM256

22

591000000 Hz

9.1 dBmV

43.5 dB

0

0

19

Locked

QAM256

23

597000000 Hz

8.9 dBmV

43.4 dB

0

0

20

Locked

QAM256

24

603000000 Hz

8.9 dBmV

43.3 dB

0

0

21

Locked

QAM256

25

609000000 Hz

8.5 dBmV

43.1 dB

0

0

22

Locked

QAM256

26

615000000 Hz

8.4 dBmV

43.1 dB

0

0

23

Locked

QAM256

27

621000000 Hz

8.4 dBmV

43 dB

0

0

24

Locked

QAM256

28

627000000 Hz

8.1 dBmV

42.9 dB

0

0

25

Locked

QAM256

29

633000000 Hz

8 dBmV

42.8 dB

0

0

26

Locked

QAM256

30

639000000 Hz

7.6 dBmV

42.6 dB

0

0

27

Locked

QAM256

31

645000000 Hz

7.6 dBmV

42.5 dB

0

0

28

Locked

QAM256

32

651000000 Hz

7.6 dBmV

42.4 dB

0

0

29

Locked

QAM256

33

657000000 Hz

7.6 dBmV

42.5 dB

0

0

30

Locked

QAM256

34

663000000 Hz

7.6 dBmV

42.5 dB

0

0

31

Locked

QAM256

35

669000000 Hz

7.4 dBmV

42.4 dB

0

0

32

Locked

QAM256

36

675000000 Hz

7.2 dBmV

41.7 dB

0

0

Upstream Bonded Channels

Channel

Lock Status

US Channel Type

Channel ID

Symbol Rate

Frequency

Power

1

Locked

ATDMA

1

5120 Ksym/sec

35700000 Hz

40.8 dBmV

2

Locked

ATDMA

2

5120 Ksym/sec

29200000 Hz

40.8 dBmV

3

Locked

ATDMA

3

5120 Ksym/sec

22700000 Hz

40.8 dBmV

4

Locked

ATDMA

4

5120 Ksym/sec

16200000 Hz

40.8 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

159

690000000 Hz

7.9 dBmV

41.8 dB

1246 ~ 2849

89477282

52

0

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

 

Current System Time:Mon Oct 21 20:26:09 2019

System Up Time:00:45:20

Regular Visitor

Re: Please help... connectivity issues

I will add, it is frustrating when Comcast over the phone and the tech who came to my house tell me everything looks good. Of course it looks good when it is up, running, and connected. When its down and I call, they tell me to restart my equipment because they can't see it, and of course it connects when I do, and then they tell me everything looks good again. I'm not complaining about the quality of service when I can stay connected. 

 

They are doing zero for me related to the exact moment the connection goes from good to broken. Part of their claim is its not their modem, so they can't say its a problem on their end. Well, everything on my end was working pretty well (for months) until they worked on the lines yesterday. 

Expert

Re: Please help... connectivity issues

Even though the signal stats looked o/k at that snapshot in time, the error log entries confirm that something is going on. Perhaps there is noise ingress into the line(s) somewhere.

 

There are other signal stat figures that can't be read by the modem. They are the "Upstream Rx Power" (Upstream Receive Power Level), the "Upstream SNR Ch." (Upstream Signal To Noise Ratio), and the "Upstream ICFR" (In Channel Frequency Response). These are as equally important in diagnosing connectivity issues as are the modem's stats.


I'm going to escalate your issue to the Comcast corporate employees that are available to these boards. They can check the CMTS (Cable Modem Termination System) for any real time degradation and / or error reports, see your node / cable plant and modem health, and see whether or not everything is in the green zone. They can also see a history plot for the modem and poll for those upstream receive signal stats.

You should get a reply here in your topic. Good luck !



I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.
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Official Employee

Re: Please help... connectivity issues

Hi, jayabee. Thanks for posting. It's frustrating to hear about your connectivity troubles. We want to help. Please send us a private message with your name so we can get your account pulled up, take a look at some additional diagnostics, then go from there. 
 
 
 
 
 
 
 
 
 

To send a private message, please click our name "ComcastSupport" then select "Send a Message" on the right side. Thanks!
 
 
 
 
 

I am an Official Comcast Employee.
Official Employees are from multiple teams within Comcast: CARE, Product, Leadership. We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Mark the post as Best Answer!