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Internet connection drops several times a day. Usually around 8pm, midnight, and late morning
I am hoping the forum can help because I am getting so tired of going to xfinity support who only seem to be able to say "perhaps if we reset your modem..." Because Xfinity had me thinking I had a bad modem and because it was showing as outdated on Xfinity's list, I recently replaced it with a Netgear CM2050V. This did not solve any problems. What we are experiencing is network outages lasting from 10 to 30 minutes, one to several times a day. The most common symptom is a DNS error - but I have learned that this is because there has been a timeout after a DNS request. Here are the modem diagnostics. I've spoken to Xfinity support multiple times and all they can seem to do is reset the modem. I had a tech (finally) come out to the house and say all the signal levels at the POP were fine, but he did not look at the modem values at all. Here is the info, I am hoping that someone might be able to offer some advice or suggestions.
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
0
Startup Procedure
Procedure Status Comment
Acquire Downstream Channel 651000000 Hz Locked
Connectivity State OK Operational
Boot State OK Operational
Security Enabled BPI+
Downstream Bonded Channels (Partial Service)
Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
1 Locked QAM256 37 651000000 Hz -1.7 dBmV 37.5 dB 2 0
2 Locked QAM256 13 507000000 Hz -2.0 dBmV 38.3 dB 0 0
3 Locked QAM256 14 513000000 Hz -1.9 dBmV 38.4 dB 0 0
4 Locked QAM256 15 519000000 Hz -2.1 dBmV 38.4 dB 0 0
5 Locked QAM256 16 525000000 Hz -2.2 dBmV 38.3 dB 1 0
6 Locked QAM256 17 531000000 Hz -2.4 dBmV 38.1 dB 0 0
7 Locked QAM256 18 537000000 Hz -2.6 dBmV 38.1 dB 0 0
8 Locked QAM256 19 543000000 Hz -2.4 dBmV 38.0 dB 0 0
9 Locked QAM256 20 549000000 Hz -2.5 dBmV 38.0 dB 0 0
10 Locked QAM256 21 555000000 Hz -2.1 dBmV 38.0 dB 0 0
11 Locked QAM256 22 561000000 Hz -1.9 dBmV 38.1 dB 1 0
12 Locked QAM256 23 567000000 Hz -1.8 dBmV 38.1 dB 3 0
13 Locked QAM256 24 573000000 Hz -1.7 dBmV 38.0 dB 2 0
14 Locked QAM256 25 579000000 Hz -1.9 dBmV 38.0 dB 1 0
15 Locked QAM256 26 585000000 Hz -1.9 dBmV 37.9 dB 0 0
16 Locked QAM256 27 591000000 Hz -2.1 dBmV 37.9 dB 6 0
17 Locked QAM256 28 597000000 Hz -2.1 dBmV 37.8 dB 3 0
18 Locked QAM256 29 603000000 Hz -1.7 dBmV 37.8 dB 3 0
19 Locked QAM256 30 609000000 Hz -1.8 dBmV 37.8 dB 3 0
20 Locked QAM256 31 615000000 Hz -1.2 dBmV 37.9 dB 3 0
21 Locked QAM256 32 621000000 Hz -1.1 dBmV 37.9 dB 4 0
22 Locked QAM256 33 627000000 Hz -1.2 dBmV 37.9 dB 5 0
23 Locked QAM256 34 633000000 Hz -1.1 dBmV 37.8 dB 8 0
24 Locked QAM256 35 639000000 Hz -1.8 dBmV 37.6 dB 2 0
25 Locked QAM256 36 645000000 Hz -1.6 dBmV 37.5 dB 6 0
26 Locked QAM256 38 657000000 Hz -1.7 dBmV 37.6 dB 4 0
27 Locked QAM256 39 663000000 Hz -1.3 dBmV 37.7 dB 2 0
28 Locked QAM256 40 669000000 Hz -1.6 dBmV 37.5 dB 6 0
29 Locked QAM256 41 675000000 Hz -1.0 dBmV 37.4 dB 5 0
30 Locked QAM256 42 681000000 Hz -1.1 dBmV 37.5 dB 4 0
31 Locked QAM256 43 687000000 Hz -1.5 dBmV 37.5 dB 7 0
32 Locked QAM256 44 693000000 Hz -1.4 dBmV 37.4 dB 4 0
Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 1 5120 16400000 Hz 51.3 dBmV
2 Locked ATDMA 2 5120 22800000 Hz 50.8 dBmV
3 Locked ATDMA 3 5120 29200000 Hz 49.8 dBmV
4 Locked ATDMA 4 5120 35600000 Hz 49.8 dBmV
5 Locked ATDMA 5 2560 40400000 Hz 49.8 dBmV
6 Not Locked Unknown 0 0 0 Hz 0.0 dBmV
7 Not Locked Unknown 0 0 0 Hz 0.0 dBmV
8 Not Locked Unknown 0 0 0 Hz 0.0 dBmV
Downstream OFDM Channels
Channel Lock Status Profile ID Channel ID Frequency Power SNR / MER Active Subcarrier Unerrored Correctable Uncorrectable
Number Range Codewords Codewords Codewords
1 Locked 0 ,1 ,2 ,3 159 722000000 Hz 1.3 dBmV 36.9 dB 1186 ~ 2909 106750700 100578360 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
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
0
Startup Procedure
Procedure Status Comment
Acquire Downstream Channel 651000000 Hz Locked
Connectivity State OK Operational
Boot State OK Operational
Security Enabled BPI+
Downstream Bonded Channels (Partial Service)
Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
1 Locked QAM256 37 651000000 Hz -1.7 dBmV 37.5 dB 2 0
2 Locked QAM256 13 507000000 Hz -2.0 dBmV 38.3 dB 0 0
3 Locked QAM256 14 513000000 Hz -1.9 dBmV 38.4 dB 0 0
4 Locked QAM256 15 519000000 Hz -2.1 dBmV 38.4 dB 0 0
5 Locked QAM256 16 525000000 Hz -2.2 dBmV 38.3 dB 1 0
6 Locked QAM256 17 531000000 Hz -2.4 dBmV 38.1 dB 0 0
7 Locked QAM256 18 537000000 Hz -2.6 dBmV 38.1 dB 0 0
8 Locked QAM256 19 543000000 Hz -2.4 dBmV 38.0 dB 0 0
9 Locked QAM256 20 549000000 Hz -2.5 dBmV 38.0 dB 0 0
10 Locked QAM256 21 555000000 Hz -2.1 dBmV 38.0 dB 0 0
11 Locked QAM256 22 561000000 Hz -1.9 dBmV 38.1 dB 1 0
12 Locked QAM256 23 567000000 Hz -1.8 dBmV 38.1 dB 3 0
13 Locked QAM256 24 573000000 Hz -1.7 dBmV 38.0 dB 2 0
14 Locked QAM256 25 579000000 Hz -1.9 dBmV 38.0 dB 1 0
15 Locked QAM256 26 585000000 Hz -1.9 dBmV 37.9 dB 0 0
16 Locked QAM256 27 591000000 Hz -2.1 dBmV 37.9 dB 6 0
17 Locked QAM256 28 597000000 Hz -2.1 dBmV 37.8 dB 3 0
18 Locked QAM256 29 603000000 Hz -1.7 dBmV 37.8 dB 3 0
19 Locked QAM256 30 609000000 Hz -1.8 dBmV 37.8 dB 3 0
20 Locked QAM256 31 615000000 Hz -1.2 dBmV 37.9 dB 3 0
21 Locked QAM256 32 621000000 Hz -1.1 dBmV 37.9 dB 4 0
22 Locked QAM256 33 627000000 Hz -1.2 dBmV 37.9 dB 5 0
23 Locked QAM256 34 633000000 Hz -1.1 dBmV 37.8 dB 8 0
24 Locked QAM256 35 639000000 Hz -1.8 dBmV 37.6 dB 2 0
25 Locked QAM256 36 645000000 Hz -1.6 dBmV 37.5 dB 6 0
26 Locked QAM256 38 657000000 Hz -1.7 dBmV 37.6 dB 4 0
27 Locked QAM256 39 663000000 Hz -1.3 dBmV 37.7 dB 2 0
28 Locked QAM256 40 669000000 Hz -1.6 dBmV 37.5 dB 6 0
29 Locked QAM256 41 675000000 Hz -1.0 dBmV 37.4 dB 5 0
30 Locked QAM256 42 681000000 Hz -1.1 dBmV 37.5 dB 4 0
31 Locked QAM256 43 687000000 Hz -1.5 dBmV 37.5 dB 7 0
32 Locked QAM256 44 693000000 Hz -1.4 dBmV 37.4 dB 4 0
Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 1 5120 16400000 Hz 51.3 dBmV
2 Locked ATDMA 2 5120 22800000 Hz 50.8 dBmV
3 Locked ATDMA 3 5120 29200000 Hz 49.8 dBmV
4 Locked ATDMA 4 5120 35600000 Hz 49.8 dBmV
5 Locked ATDMA 5 2560 40400000 Hz 49.8 dBmV
6 Not Locked Unknown 0 0 0 Hz 0.0 dBmV
7 Not Locked Unknown 0 0 0 Hz 0.0 dBmV
8 Not Locked Unknown 0 0 0 Hz 0.0 dBmV
Downstream OFDM Channels
Channel Lock Status Profile ID Channel ID Frequency Power SNR / MER Active Subcarrier Unerrored Correctable Uncorrectable
Number Range Codewords Codewords Codewords
1 Locked 0 ,1 ,2 ,3 159 722000000 Hz 1.3 dBmV 36.9 dB 1186 ~ 2909 106750700 100578360 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
Event Log
Clear Log Refresh Export
Time Priority Description
Sun Nov 28 17:56:56 2021 (Notice (6)) CM-STATUS message sent. Event Type Code: 1; Chan ID: 39; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Sun Nov 28 17:56:55 2021 (Warning (5)) MDD message timeout;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Sun Nov 28 17:56:51 2021 (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=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Sun Nov 28 17:56:44 2021 (Warning (5)) Dynamic Range Window violation
Sun Nov 28 17:56:44 2021 (Warning (5)) RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Sun Nov 28 17:56:43 2021 (Warning (5)) REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Sun Nov 28 17:56:37 2021 (Notice (6)) DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Sun Nov 28 17:56:32 2021 (Notice (6)) TLV-11 - unrecognized OID;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Time Not Established (Notice (6)) Honoring MDD; IP provisioning mode = IPv6
Time Not Established (Critical (3)) No Ranging Response received - T3 time-out;CM-MAC=X;CMTS-MAC=MAC=Z;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=X;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Tue Nov 23 14:35:50 2021 (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=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Tue Nov 23 14:35:38 2021 (Warning (5)) REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Tue Nov 23 14:35:33 2021 (Notice (6)) DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Tue Nov 23 14:35:28 2021 (Notice (6)) TLV-11 - unrecognized OID;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Time Not Established (Notice (6)) Honoring MDD; IP provisioning mode = IPv6
Time Not Established (Critical (3)) No Ranging Response received - T3 time-out;CM-MAC=X;CMTS-MAC=MAC=Z;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=X;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:25:55 2021 (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=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:25:44 2021 (Warning (5)) REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:25:38 2021 (Notice (6)) DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:25:33 2021 (Notice (6)) TLV-11 - unrecognized OID;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Time Not Established (Notice (6)) Honoring MDD; IP provisioning mode = IPv6
Time Not Established (Critical (3)) No Ranging Response received - T3 time-out;CM-MAC=X;CMTS-MAC=MAC=Z;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=X;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:07:34 2021 (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=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:07:23 2021 (Warning (5)) Dynamic Range Window violation
Mon Nov 22 13:07:23 2021 (Warning (5)) RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:07:22 2021 (Warning (5)) REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:07:17 2021 (Notice (6)) DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:07:16 2021 (Notice (6)) TLV-11 - unrecognized OID;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:07:06 2021 (Notice (6)) Honoring MDD; IP provisioning mode = IPv6
Mon Nov 22 13:06:55 2021 (Critical (3)) No Ranging Response received - T3 time-out;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:06:44 2021 (Critical (3)) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=X;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:06:41 2021 (Warning (5)) Lost MDD Timeout;CM-MAC=X;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:06:15 2021 (Critical (3)) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:05:38 2021 (Warning (5)) REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:05:34 2021 (Notice (6)) DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:05:33 2021 (Critical (3)) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:05:26 2021 (Notice (6)) TLV-11 - unrecognized OID;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Clear Log Refresh Export
Time Priority Description
Sun Nov 28 17:56:56 2021 (Notice (6)) CM-STATUS message sent. Event Type Code: 1; Chan ID: 39; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Sun Nov 28 17:56:55 2021 (Warning (5)) MDD message timeout;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Sun Nov 28 17:56:51 2021 (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=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Sun Nov 28 17:56:44 2021 (Warning (5)) Dynamic Range Window violation
Sun Nov 28 17:56:44 2021 (Warning (5)) RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Sun Nov 28 17:56:43 2021 (Warning (5)) REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Sun Nov 28 17:56:37 2021 (Notice (6)) DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Sun Nov 28 17:56:32 2021 (Notice (6)) TLV-11 - unrecognized OID;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Time Not Established (Notice (6)) Honoring MDD; IP provisioning mode = IPv6
Time Not Established (Critical (3)) No Ranging Response received - T3 time-out;CM-MAC=X;CMTS-MAC=MAC=Z;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=X;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Tue Nov 23 14:35:50 2021 (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=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Tue Nov 23 14:35:38 2021 (Warning (5)) REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Tue Nov 23 14:35:33 2021 (Notice (6)) DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Tue Nov 23 14:35:28 2021 (Notice (6)) TLV-11 - unrecognized OID;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Time Not Established (Notice (6)) Honoring MDD; IP provisioning mode = IPv6
Time Not Established (Critical (3)) No Ranging Response received - T3 time-out;CM-MAC=X;CMTS-MAC=MAC=Z;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=X;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:25:55 2021 (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=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:25:44 2021 (Warning (5)) REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:25:38 2021 (Notice (6)) DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:25:33 2021 (Notice (6)) TLV-11 - unrecognized OID;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Time Not Established (Notice (6)) Honoring MDD; IP provisioning mode = IPv6
Time Not Established (Critical (3)) No Ranging Response received - T3 time-out;CM-MAC=X;CMTS-MAC=MAC=Z;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=X;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:07:34 2021 (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=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:07:23 2021 (Warning (5)) Dynamic Range Window violation
Mon Nov 22 13:07:23 2021 (Warning (5)) RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:07:22 2021 (Warning (5)) REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:07:17 2021 (Notice (6)) DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:07:16 2021 (Notice (6)) TLV-11 - unrecognized OID;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:07:06 2021 (Notice (6)) Honoring MDD; IP provisioning mode = IPv6
Mon Nov 22 13:06:55 2021 (Critical (3)) No Ranging Response received - T3 time-out;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:06:44 2021 (Critical (3)) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=X;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:06:41 2021 (Warning (5)) Lost MDD Timeout;CM-MAC=X;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:06:15 2021 (Critical (3)) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:05:38 2021 (Warning (5)) REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:05:34 2021 (Notice (6)) DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:05:33 2021 (Critical (3)) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
Mon Nov 22 13:05:26 2021 (Notice (6)) TLV-11 - unrecognized OID;CM-MAC=X;CMTS-MAC=MAC=Z;CM-QOS=1.1;CM-VER=3.1;
EG
Expert
•
110K Messages
3 years ago
@rubatoguy
The upstream power is too high (out of spec on channel number 1) and it may be intermittently fluctuating even higher out of spec. That can cause random disconnects, spontaneous re-booting of the modem, speed, packet loss, latency problems, and the un-bonding of channels.
In an effort to try to obtain better connectivity / more wiggle room, check to see if there are there any excess/unneeded coax cable splitters in the line leading to the modem that can be eliminated/re-configured. Any splitters that remain should be high quality and cable rated for 5-1000 MHz, bi-directional, and no gold colored garbage from Radio Shack, Home Depot, Target, etc. Splitters should be swapped with known to be good / new ones to test.
Also check the coax cable for any damage such as cuts, nicks, kinks, sharp bends, etc.
If there aren't any unneeded splitters that can be eliminated and if your coax wiring setup can't be reconfigured so that there is a single two-way splitter connected directly off of the drop from the street / pole with one port feeding the modem and the other port feeding the rest of the house/equipment with additional splits as needed and you've checked all the wiring and fittings for integrity and tightness and refresh them by taking them apart then check for and clean off any corrosion / oxidation on the center wire and put them back together again, then perhaps it's best to book a tech visit to investigate and correct.
Good luck with it !
2
0
XfinityJorge
Official Employee
•
2.1K Messages
3 years ago
Hello @rubatoguy thanks for contacting our Xfinity Support Team and we are more than happy to see how we can help. I understand you are having an issue with an intermittent connection and we have a few tricks we would love to try. To get started please select the "peer to peer chat" icon (upper right corner of this page), click the "new message" icon, type/select "Xfinity Support", and then type/send your name with your address.
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EG
Expert
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110K Messages
3 years ago
@rubatoguy
Have you had a chance to try any of the tips that I supplied ?
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user_f5f1ff
Visitor
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2 Messages
3 years ago
This sounds pretty similar to what I experienced. Eventually Comcast sent out a technician and he checked the connectors that were located in the basement of my apartment complex. That was a couple months ago now and it hasn't happened even one single time. FINALLY! I signed up in January and had bought an approved ARRIS modem from their list. So of course the only feedback I really got ever was that it was my hardware. Arris said the same thing. That they had no control over that stuff. I had decided it was something to do with the QAM power levels or something like that. And it was weird it always seemed to happen after midnight like clockwork. My internet would stop working, id run a speed test on my phone and determine whether or not the WIFI was working, and reset the modem. It happened throughout the day as well sometimes but not as frequently. Sometimes unplugging the modem would work, but more often than not I also had to get a call or a chat going with technical support and it would require them to send me a signal. Sometimes it just wouldn't work for hours or until about 6am. I did this for the first nine months of my contract. Calling and text chatting at least 5 times a week to get it going again. I can't even tell you how many times someone said or texted to me, "I Promise you this issue has been resolved and it will not happen again." The first scheduled tech visit was cancelled the day of with me personally, I guess because they had inspected a line in the area or something like that and decided that it also probably fixed my problem. I can't exactly recall what was said about that. The second scheduled appointment my modem was tested and also the connectors in my apartment. That all came back fine. I'm not sure if he checked any of the connectors in the basement, but I definitely did not let him into the locked area where the box is located. I did, however, with the next technician that came months later. He checked them out and said the connectors or splitters were crappy and that was probably the problem and it sure was! Like I said my internet hasn't gone out even once since then. It's been awesome! :)
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