What happened at 2am?

[mda99das]

Was looking at my broadband stability, and normally its very solid, goes more days without a reboot.

Then at around 2am got huge packet loss

The router shows the following:

Time Priority Description

18-08-2022 02:13:02	notice	REGISTRATION COMPLETE - Waiting for Operational status
18-08-2022 02:12:56	critical	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
18-08-2022 02:12:54	notice	DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
18-08-2022 02:12:52	warning	DHCP WARNING - Non-critical field invalid in response ;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
18-08-2022 02:12:50	notice	Honoring MDD; IP provisioning mode = IPv4
18-08-2022 02:12:48	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
18-08-2022 02:12:47	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
18-08-2022 02:12:42	critical	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
18-08-2022 02:12:42	critical	SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
18-08-2022 02:12:30	critical	Cable Modem Reboot due to master console reset
18-08-2022 02:12:30	critical	Cable Modem Reboot due to master console reset
18-08-2022 02:10:44	critical	Cable Modem Reboot from SNMP

What does this mean?

[jpeg1]

Network maintenance 

[nodrogd]

Very short interruption, therefore possibly:

1) Mains spike or dropout at the local street node or intermediate amplifier.

2) Reset/Reboot of the CMTS at the local headend.

[snozski]

I had this too around same time.   Plymouth area ? 

18-08-2022 02:09:25	critical	Cable Modem Reboot due to master console reset
18-08-2022 02:09:25	critical	Cable Modem Reboot due to master console reset
18-08-2022 02:07:42	critical	Cable Modem Reboot from SNMP
06-08-2022 02:07:03	critical	Cable Modem Reboot from SNMP

[piggo64]

Me Also (Cardiff)

[Natalie_L]

HI piggo64, 

Thank you for reaching out to us here on the Community. 

I am very sorry to hear you have been experiencing some issues with the service. 

Can you please expand on what has been happening? 

If you experience any further problems, can you please check for any known issues here?

Thank you, 

[piggo64]

Upstream bonded channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
0 49600000 40.8 5120 QAM 64 1
1 43100000 40.3 5120 QAM 64 2
2 36600000 39.8 5120 QAM 64 3
3 30100000 39.3 5120 QAM 64 4
4 23600000 39 5120 QAM 64 5
Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts
0 ATDMA 0 1 0 0
1 ATDMA 0 1 0 0
2 ATDMA 0 1 0 0
3 ATDMA 0 1 0 0
4 ATDMA 0 1 0 0
Refresh data

Downstream bonded channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
1 139000000 7.4 42 QAM 256 1
2 147000000 7.5 42 QAM 256 2
3 155000000 7.3 42 QAM 256 3
4 163000000 7.2 42 QAM 256 4
5 171000000 6.9 42 QAM 256 5
6 179000000 6.9 42 QAM 256 6
7 187000000 6.9 42 QAM 256 7
8 195000000 7 42 QAM 256 8
9 203000000 6.7 42 QAM 256 9
10 211000000 6.7 42 QAM 256 10
11 219000000 6.6 42 QAM 256 11
12 227000000 6.5 42 QAM 256 12
13 235000000 6.4 42 QAM 256 13
14 243000000 6.1 42 QAM 256 14
15 251000000 5.6 42 QAM 256 15
16 259000000 5.3 42 QAM 256 16
17 267000000 5.7 42 QAM 256 17
18 275000000 5.9 42 QAM 256 18
19 283000000 5.9 42 QAM 256 19
20 291000000 5.9 42 QAM 256 20
21 299000000 6 42 QAM 256 21
22 307000000 6 42 QAM 256 22
23 315000000 5.8 42 QAM 256 23
24 323000000 5.7 42 QAM 256 24
25 331000000 5.4 42 QAM 256 25
26 339000000 5.4 42 QAM 256 26
27 347000000 5.6 42 QAM 256 27
28 355000000 5.7 42 QAM 256 28
29 363000000 5.8 42 QAM 256 29
30 371000000 5.6 42 QAM 256 30
31 379000000 5.1 42 QAM 256 31


Downstream bonded channels

Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors
1 Locked 42 0 0
2 Locked 42 0 0
3 Locked 42 0 0
4 Locked 42 0 0
5 Locked 42 0 0
6 Locked 42 0 0
7 Locked 42 0 0
8 Locked 42 0 0
9 Locked 42 0 0
10 Locked 42 0 0
11 Locked 42 0 0
12 Locked 42 0 0
13 Locked 42 0 0
14 Locked 42 0 0
15 Locked 42 0 0
16 Locked 42 0 0
17 Locked 42 0 0
18 Locked 42 0 0
19 Locked 42 0 0
20 Locked 42 0 0
21 Locked 42 0 0
22 Locked 42 0 0
23 Locked 42 0 0
24 Locked 42 0 0
25 Locked 42 0 0
26 Locked 42 0 0
27 Locked 42 0 0
28 Locked 42 0 0
29 Locked 42 0 0
30 Locked 42 0 0
31 Locked 42 0 0


Network Log

Time Priority Description
19-10-2022 21:54:58 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-10-2022 21:54:58 notice DS profile assignment change. DS Chan ID: 32; Previous Profile: 4; New Profile: 1 2 4.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-10-2022 20:55:57 warning TCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-10-2022 20:54:57 warning Dynamic Range Window violation
19-10-2022 20:54:57 warning RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-10-2022 20:54:57 warning Dynamic Range Window violation
19-10-2022 20:54:57 warning RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-10-2022 20:54:57 warning RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-10-2022 20:54:57 warning Dynamic Range Window violation
19-10-2022 20:54:57 notice US profile assignment change. US Chan ID: 6; Previous Profile: 13; New Profile: 11 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-10-2022 20:54:57 warning Dynamic Range Window violation
19-10-2022 20:54:57 warning DBC-REQ Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-10-2022 20:54:57 warning RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-10-2022 20:54:54 notice REGISTRATION COMPLETE - Waiting for Operational status
19-10-2022 20:54:54 critical No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-10-2022 20:54:54 warning TCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-10-2022 20:54:44 warning RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-10-2022 20:54:44 warning Dynamic Range Window violation
19-10-2022 20:54:44 warning REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-10-2022 20:54:44 warning Dynamic Range Window violation
19-10-2022 20:54:44 warning RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-10-2022 20:54:39 notice DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 4.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-10-2022 20:54:36 notice TLV-11 - unrecognized OID;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-10-2022 20:54:33 warning DHCP WARNING - Non-critical field invalid in response ;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-10-2022 20:54:31 notice Honoring MDD; IP provisioning mode = IPv4
19-10-2022 20:54:27 critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-10-2022 20:54:26 critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-10-2022 20:54:09 critical Cable Modem Reboot due to master console reset
19-10-2022 20:54:09 critical Cable Modem Reboot due to master console reset
19-10-2022 20:47:30 critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
19-10-2022 08:08:29 critical No Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
18-10-2022 14:03:34 critical Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

[happywithmy350]

Done a reboot? you might have had a speed uplift... lots reporting similar

[IPFreely]

Planned work. VM rebooted your modem remotely after: Cable Modem Reboot from SNMP

[Ilyas_Y]

Hey @IPFreely, thanks for reaching back out to us on the Virgin Media forums.

I'm sorry to hear about the issues with the service.
If you were to check here, may I ask if any faults show up?
Let us know.

Kind regards,
Ilyas.