T3 Timeout, Sync Timing Failure and trips to 1970

[PaulR96]

For the past month I've had a steadily worsening connection. It went from solid to a few stutters and then hours of downtime multiple times a day with nothing changing at my side. After trying to get help or even just acknowledgement from the Twitter 'help' I called. Had an engineer out on Saturday who took my old Hub 3, unneeded splitter and incorrect mains supply and replaced it with a Hub 4.

I had no problems on Saturday aside from what I thought were to do with the switch out. Unfortunately, Sunday and today I've had a steady series of brief connection drops that show up with lots of the following although mostly the first two.

"No Ranging Response received - T3 time-out"
"SYNC Timing Synchronization failure - Loss of Sync"
"Missing Mandatory MDD TLV on primary DS Channel"
"Unicast Ranging Received Abort Response - initializing MAC"
"CM-STATUS message sent. Event Type Code: 5; Chan ID: 1; DSID: N/A"
"Unicast Maintenance Ranging attempted - No response - Retries exhausted"

I can't understand why I'm getting this and I know I have zero hope of getting support before going crazy via phone.
"Have you tried turning it off then waiting a minute and turning it back on? Are the cables connected?"
I just can't do it. I know some people have simple issues, I'd love for it to be a simple issue but these errors tell me there's a pretty big problem. Can someone please help? I know there are support peeps around here.

[PaulR96]

I forgot to set this up until today for the new IP. I did this around 1pm and this is how it's been since.

[lotharmat]

Can you post your Hub status and logs?
Someone should be spot if there is a problem
Navigate to http://192.168.0.1 (or http://192.168.100.1 - if in modem mode)
Don't log in!
Click on 'router status'
Copy/paste the data from each of the tabs as text into a 'REPLY' as opposed to 'QUICK REPLY'. The forum software will remove the MAC addresses for you (If you get an error - just click the 'post' button again).

[PaulR96]

Doing this in a few parts because it keeps giving me errors about it being over 20k character when I know it isn't.

Item	Status	Comments
Cable Modem Status	Online	DOCSIS 3.1
Primary downstream channel	Locked	SC-QAM
Channel Overview	Downstream	Upstream
DOCSIS 3.0 channels	31	5
DOCSIS 3.1 channels	1	1

3.0 Downstream channels

Channel	Frequency (Hz)	Power (dBmV)	SNR (dB)	Modulation	Channel ID
4	162750000	5.300003	40.366287	QAM256	4
1	138750000	5.599998	40.946209	QAM256	1
2	146750000	5.500000	40.366287	QAM256	2
3	154750000	5.599998	40.366287	QAM256	3
5	170750000	5.000000	40.366287	QAM256	5
6	178750000	5.000000	40.366287	QAM256	6
7	186750000	4.699997	40.366287	QAM256	7
8	194750000	4.099998	40.366287	QAM256	8
9	202750000	3.799999	40.366287	QAM256	9
10	210750000	3.700001	40.366287	QAM256	10
11	218750000	3.599998	40.366287	QAM256	11
12	226750000	3.400002	40.366287	QAM256	12
13	234750000	3.099998	40.366287	QAM256	13
14	242750000	2.799999	38.983261	QAM256	14
15	250750000	2.400002	38.983261	QAM256	15
16	258750000	2.299999	38.983261	QAM256	16
17	266750000	2.099998	38.983261	QAM256	17
18	274750000	1.599998	38.983261	QAM256	18
19	282750000	2.200001	38.983261	QAM256	19
20	290750000	2.799999	38.983261	QAM256	20
21	298750000	3.299999	38.983261	QAM256	21
22	306750000	4.099998	38.983261	QAM256	22
23	314750000	4.800003	40.366287	QAM256	23
24	322750000	5.000000	40.366287	QAM256	24
25	330750000	4.699997	40.366287	QAM256	25
26	338750000	4.500000	40.366287	QAM256	26
27	346750000	4.599998	40.366287	QAM256	27
28	354750000	4.800003	40.366287	QAM256	28
29	362750000	4.599998	40.946209	QAM256	29
30	370750000	4.400002	38.983261	QAM256	30
31	378750000	4.000000	38.983261	QAM256	31

3.0 Downstream channels

Channel	Lock Status	RxMER (dB)	Pre RS Errors	Post RS Errors
4	Locked	40.366287	0	0
1	Locked	40.946209	0	0
2	Locked	40.366287	0	0
3	Locked	40.366287	0	0
5	Locked	40.366287	0	0
6	Locked	40.366287	0	0
7	Locked	40.366287	0	0
8	Locked	40.366287	0	0
9	Locked	40.366287	0	0
10	Locked	40.366287	0	0
11	Locked	40.366287	0	0
12	Locked	40.366287	0	0
13	Locked	40.366287	0	0
14	Locked	38.983261	0	0
15	Locked	38.983261	0	0
16	Locked	38.983261	0	0
17	Locked	38.983261	0	0
18	Locked	38.983261	0	0
19	Locked	38.983261	0	0
20	Locked	38.983261	0	0
21	Locked	38.983261	0	0
22	Locked	38.983261	0	0
23	Locked	40.366287	0	0
24	Locked	40.366287	0	0
25	Locked	40.366287	0	0
26	Locked	40.366287	0	0
27	Locked	40.366287	0	0
28	Locked	40.366287	0	0
29	Locked	40.946209	0	0
30	Locked	38.983261	0	0
31	Locked	38.983261	0	0

3.1 Downstream channels

Channel	Channel Width (MHz)	FFT Type	Number of Active Subcarriers	Modulation (Active Profile)	First Active Subcarrier (Hz)
159	94	4K	1800	QAM4096	424

3.1 Downstream channels

Channel ID	Lock Status	RxMER Data (dB)	PLC Power (dBmV)	Correcteds (Active Profile)	Uncorrectables (Active Profile)
159	Locked	42	3.2	362508189	0

[PaulR96]

3.0 Upstream channels

Channel	Frequency (Hz)	Power (dBmV)	Symbol Rate (ksps)	Modulation	Channel ID
1	23600000	40.270599	5120 KSym/sec	64QAM	13
2	30100000	40.270599	5120 KSym/sec	64QAM	12
3	36600000	40.770599	5120 KSym/sec	64QAM	11
4	43100000	41.270599	5120 KSym/sec	64QAM	10
5	49600000	41.770599	5120 KSym/sec	64QAM	9

3.0 Upstream channels

Channel	Channel Type	T1 Timeouts	T2 Timeouts	T3 Timeouts	T4 Timeouts
1	US_TYPE_ATDMA	0	0	0	0
2	US_TYPE_ATDMA	0	0	0	0
3	US_TYPE_ATDMA	0	0	0	0
4	US_TYPE_ATDMA	0	0	0	0
5	US_TYPE_ATDMA	0	0	0	0

3.1 Upstream channels

Channel	Channel Width (MHz)	Power (dBmV)	FFT Type	Modulation
14	10.0	36.2	2K	QAM128

3.1 Upstream channels

Channel	Channel Type	Number of Active Subcarriers	First Active Subcarrier (Hz)	T3 Timeouts	T4 Timeouts
14	OFDMA	200	53.9	0	0

[PaulR96]

General Configuration

Network access	true
Maximum Number of CPEs	1
Baseline Privacy	true
DOCSIS Mode	3.1
Config file	kfoA,.iyewrkldJKDHSUBsgvca698

Primary Downstream Service Flow

SFID	24085
Max Traffic Rate	143750047
Max Traffic Burst	42600
Min Traffic Rate	0

Primary Upstream Service Flow

SFID	24342
Max Traffic Rate	22000047
Max Traffic Burst	42600
Min Traffic Rate	0
Max Concatenated Burst	42600
Scheduling Type	bestEffort

[PaulR96]

Network Log

Time	Priority	Description
Tue Apr	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon Apr	6	US profile assignment change. US Chan ID: 14; Previous Profile: ; New Profile: 11.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon Apr	5	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;
Mon Apr	5	MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon Apr	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon Apr	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=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon Apr	3	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon Apr	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=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon Apr	3	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon Apr	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon Apr	6	CM-STATUS message sent. Event Type Code: 5; Chan ID: 4; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon Apr	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon Apr	6	CM-STATUS message sent. Event Type Code: 2; Chan ID: 11; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon Apr	3	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon Apr	6	CM-STATUS message sent. Event Type Code: 24; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon Apr	3	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon Apr	6	US profile assignment change. US Chan ID: 14; Previous Profile: ; New Profile: 11.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon Apr	5	MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jan	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jan	3	Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jan	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jan	4	Missing Mandatory MDD TLV on primary DS Channel;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jan	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jan	3	Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jan	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jan	3	Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jan	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jan	3	Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jan	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jan	3	Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jan	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jan	3	Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jan	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jan	4	Missing Mandatory MDD TLV on primary DS Channel;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jan	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jan	3	Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jan	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jan	3	Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jan	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu Jan	3	Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon Apr	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon Apr	6	CM-STATUS message sent. Event Type Code: 5; Chan ID: 1; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon Apr	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon Apr	3	Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon Apr	3	Ranging Request Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon Apr	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon Apr	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=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon Apr	3	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon Apr	3	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Mon Apr	6	CM-STATUS message sent. Event Type Code: 24; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

[PaulR96]

Just noting the Thursday was the brief trip to 1970. There was also a lot of this on Sunday. Nothing (yet) since the big outage.

This was Sunday's graph from the very moment I set the BQM to the new IP.

Sunday's BQM on Think Broadband 

[PaulR96]

For an update after the big outage I'm still seeing huge latency spikes. I did try calling about this and was essentially told they saw nothing wrong with it because it hadn't dropped (yet) today / Wednesday. 

[lotharmat]

To me, that looks rather like over-utilisation!

That doesn't tend to get fixed quickly unfortunately!