RCS Partial Service and Lost MDD timeout errors

[steverosetti]

Hi

Having issues over the last week with the Hub rebooting and loss of internet.

This is causing a lot of frustration as my wife works from home.

Can anyone take a look and let me know how to solve these problems.

04/04/2021 19:24:42	Warning!	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
04/04/2021 19:17:1	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
04/04/2021 19:17:1	Warning!	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
04/04/2021 19:16:54	Error	Service Add Response rejected - Invalid transaction ID;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
04/04/2021 18:21:48	Warning!	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
04/04/2021 18:10:53	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
04/04/2021 18:10:50	Warning!	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
04/04/2021 18:10:33	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
04/04/2021 18:10:32	Warning!	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
04/04/2021 18:02:37	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
04/04/2021 18:02:34	Warning!	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
04/04/2021 18:01:53	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
04/04/2021 18:01:52	Warning!	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
04/04/2021 17:59:14	Warning!	RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
04/04/2021 17:58:11	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=3.0;
04/04/2021 17:56:15	Warning!	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
04/04/2021 17:55:30	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
04/04/2021 17:55:30	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
04/04/2021 17:55:26	critical	SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
04/04/2021 17:55:2	Warning!	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

[RockerSBM]

Hi

look at them power levels -17 and SNR at 28. looks like a downstream problem too. SNR should always be above 35 higer the better for a cleaner internet.

power levels thinks its like +10 and -10 but some says its ok for +15 and - 15 but always best for near 0 has you can get.

[steverosetti]

Graph showing where router has rebooted

[Hayley_S]

Thank you for providing me with this information @steverosetti,

I can not see any issues on your Hub, your upstream and downstream are both coming back with no errors, there are no area issues that could be causing these issues either.

I am not able to send anyone out due to this.

Are you unable to use your internet at the moment? 

Look forward to your response.

[RockerSBM]

Hi Hayley

How can you not send anyone out to him when you've just seen his snr and power levels? Plus the post rs errors from it and random disconnections? 

One of his channels was at 28 SnR other was 31! That's a red flag in its own! And just showed you internet went down and not to mention power levels -17! 

[steverosetti]

Hi

Thanks for your reply.

I'm getting rather frustrated.

How can you say 'I can not see any issues on your Hub, your upstream and downstream are both coming back with no errors'.

What are all the PRE and Post RS Errors???

I have just checked BQM and todays graph is unreal

Here's all the error data from the router.

Downstream bonded channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID

1	659000000	-0.7	38	256 qam	32
2	475000000	0	38	256 qam	9
3	483000000	0	38	256 qam	10
4	491000000	0	38	256 qam	11
5	499000000	0	38	256 qam	12
6	507000000	0	38	256 qam	13
7	515000000	0	38	256 qam	14
8	523000000	-0.2	38	256 qam	15
9	531000000	-0.5	38	256 qam	16
10	539000000	-0.7	38	256 qam	17
11	547000000	-0.7	38	256 qam	18
12	555000000	-0.5	38	256 qam	19
13	563000000	-0.5	38	256 qam	20
14	571000000	-0.5	38	256 qam	21
15	579000000	-0.5	38	256 qam	22
16	587000000	-0.5	38	256 qam	23
17	595000000	-0.7	38	256 qam	24
18	603000000	-1	38	256 qam	25
19	611000000	-1	38	256 qam	26
20	619000000	-1.2	38	256 qam	27
21	627000000	-1	38	256 qam	28
22	635000000	-0.7	38	256 qam	29
23	643000000	-0.5	38	256 qam	30
24	651000000	-0.7	38	256 qam	31

Downstream bonded channels

Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors

1	Locked	38.9	169	0
2	Locked	38.6	78	0
3	Locked	38.6	91	0
4	Locked	38.6	118	0
5	Locked	38.6	94	0
6	Locked	38.9	53	0
7	Locked	38.9	54	0
8	Locked	38.9	44	0
9	Locked	38.9	40	0
10	Locked	38.9	28	0
11	Locked	38.6	40	0
12	Locked	38.6	92	0
13	Locked	38.6	226102	174
14	Locked	38.6	39849642	10310
15	Locked	38.6	6861547	272
16	Locked	38.6	3401264	40
17	Locked	38.6	24445249	738
18	Locked	38.9	11430763	12296572
19	Locked	38.9	40922475	1375723
20	Locked	38.9	28309842	62478
21	Locked	38.9	24574626	3743755
22	Locked	38.6	7758485	4297082
23	Locked	38.9	1959049	832772
24	Locked	38.6	1297094	234147

Upstream bonded channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID

1	46200000	47.8	5120	64 qam	1
2	25800000	46.3	5120	64 qam	4
3	32600000	46.3	5120	64 qam	3
4	39400000	47.8	5120	64 qam	2

Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1	ATDMA	0	0	0	0
2	ATDMA	0	0	0	0
3	ATDMA	0	0	1	0
4	ATDMA	0	0	0	0

Network Log

Time Priority Description

14/04/2021 08:12:46	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/04/2021 19:13:31	Warning!	Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/04/2021 19:13:18	Error	Service Delete Response rejected - Invalid Transaction;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

[Hayley_S]

Hello @stevenrosetti,

I would like to speak to you in a private message so we can discuss this further, I will send you a message now.

Many thanks,

[steverosetti]

Hi Hayley_S

I am still waiting for a private message.

I have notice that you have replied to me as @stevenrosetti

That isnt me....

I am @steverosetti

I await your response

[RockerSBM]

Hi steve

i think she send me the pm instead of you dude i got one from her. 

i see your power levels have gone back and SNR but its the bottom end downstream thats got noise on with the a mount of errors showing.

you need to show this to the tech when he comes he should past it on to networks.

has for your graph has your ip changed from it dropping out? only thing that would make it red.

[Hayley_S]

Thank you for letting me know @RockerSBM,

I am sorry about that, the system must of got mixed up when I was sending the reply.

I have sent him a private message and I am talking to him today 🙂

Many thanks,

[steverosetti]

UPDATE:

It's been a few weeks since the engineer came out to try and resolve our issues.

He renewed all the connectors from the cabinet all the way up to our house, and also installed a new wall point in our house.

The OLD connectors were from when we had broadband first installed in approx 1997/98.

He said he hadn't seen connectors this old for a very long time, and wasn't surprised we had connection issues.

We are now experiencing a stable connection. We still have a few T3 errors occasionally but I have not had to reboot the hub for the past 4 weeks.

The engineer was excellent and very helpful and sorted the problem.

Thanks.