Virgin Media Community

[RockerSBM]

Hi Virgin 

I think i have a problem with one of the upstream channels shac2 hub is rebooting and loads of T3 errors on the error logs. My tbb graph showing red lines when it happens. I see the upstream power level gone up abit too from 48dbmv

I know the upstream says 4 t3 timeouts but they was 12 t3 timeouts b4 the hub rebooted.

Looks like the 258 channel is the problem. 

Downstream   DS-1 DS-2 DS-3 DS-4 DS-5 DS-6 DS-7 DS-8

Frequency (Hz)	299000000	267000000	275000000	283000000	291000000	307000000	315000000	323000000
Lock Status(QAM Lock/FEC Sync/MPEG Lock)	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked
Channel ID	17	13	14	15	16	18	19	20
Modulation	256QAM	256QAM	256QAM	256QAM	256QAM	256QAM	256QAM	256QAM
Symbol Rate (Msym/sec)	6.952000	6.952000	6.952000	6.952000	6.952000	6.952000	6.952000	6.952000
Interleave Depth	I=12 J=17	I=12 J=17	I=12 J=17	I=12 J=17	I=12 J=17	I=12 J=17	I=12 J=17	I=12 J=17
Power Level (dBmV)	1.75	2.70	2.48	2.08	1.76	1.75	1.75	1.87
RxMER (dB)	38.26	38.26	38.26	38.26	38.98	38.61	38.26	38.26
Pre RS Errors	168	179	10	6	5	-33	619	-620
Post RS Errors	-9	-11	-4	-5	4	-24	620	-629

Upstream   US-1 US-2 US-3 US-4

Channel Type	2.0	N/A	N/A	2.0
Channel ID	4	N/A	N/A	3
Frequency (Hz)	25800000	N/A	N/A	32600000
Ranging Status	Success	N/A	N/A	Success
Modulation	16QAM	N/A	N/A	16QAM
Symbol Rate (Sym/sec)	5120000	N/A	N/A	5120000
Mini-Slot Size	4	N/A	N/A	4
Power Level (dBmV)	49.25	N/A	N/A	47.75
T1 Timeouts	0	0	0	0
T2 Timeouts	0	0	0	0
T3 Timeouts	4	0	0	0
T4 Timeouts	0	0	0	0

Network Log

First Time	Last Time	Priority	Error Number	Description
05/04/2017 12:37:41 GMT	05/04/2017 12:37:41 GMT	Error (4)	68000407	TOD established
05/04/2017 12:37:19 GMT	05/04/2017 12:37:19 GMT	Critical (3)	82000200	No Ranging Response received - T3 time-out
05/04/2017 12:37:04 GMT	05/04/2017 12:37:04 GMT	Critical (3)	82000200	No Ranging Response received - T3 time-out
05/04/2017 12:37:01 GMT	05/04/2017 12:37:01 GMT	Critical (3)	82000200	No Ranging Response received - T3 time-out
05/04/2017 12:36:58 GMT	05/04/2017 12:36:58 GMT	Critical (3)	82000200	No Ranging Response received - T3 time-out
05/04/2017 12:36:50 GMT	05/04/2017 12:36:50 GMT	Notice (6)	84000510	Downstream Locked Successfully
05/04/2017 12:36:42 GMT	05/04/2017 12:36:42 GMT	Critical (3)	82000600	Unicast Maintenance Ranging attempted - No response - Retries exhausted
05/04/2017 12:36:42 GMT	05/04/2017 12:36:42 GMT	Critical (3)	82000300	Ranging Request Retries exhausted
05/04/2017 12:36:41 GMT	05/04/2017 12:36:41 GMT	Critical (3)	82000200	No Ranging Response received - T3 time-out
05/04/2017 12:36:40 GMT	05/04/2017 12:36:40 GMT	Critical (3)	82000200	No Ranging Response received - T3 time-out
05/04/2017 12:36:39 GMT	05/04/2017 12:36:39 GMT	Critical (3)	82000200	No Ranging Response received - T3 time-out
05/04/2017 12:36:38 GMT	05/04/2017 12:36:38 GMT	Critical (3)	82000200	No Ranging Response received - T3 time-out
05/04/2017 12:36:37 GMT	05/04/2017 12:36:37 GMT	Critical (3)	82000200	No Ranging Response received - T3 time-out
05/04/2017 12:36:35 GMT	05/04/2017 12:36:35 GMT	Critical (3)	82000200	No Ranging Response received - T3 time-out
05/04/2017 12:36:34 GMT	05/04/2017 12:36:34 GMT	Critical (3)	82000200	No Ranging Response received - T3 time-out
05/04/2017 12:36:33 GMT	05/04/2017 12:36:33 GMT	Critical (3)	82000200	No Ranging Response received - T3 time-out
05/04/2017 12:36:32 GMT	05/04/2017 12:36:32 GMT	Critical (3)	82000200	No Ranging Response received - T3 time-out
05/04/2017 12:36:31 GMT	05/04/2017 12:36:31 GMT	Critical (3)	82000200	No Ranging Response received - T3 time-out
05/04/2017 12:36:30 GMT	05/04/2017 12:36:30 GMT	Critical (3)	82000200	No Ranging Response received - T3 time-out
05/04/2017 12:36:29 GMT	05/04/2017 12:36:29 GMT	Critical (3)	82000200	No Ranging Response received - T3 time-out

cheers

shaun

[Jen_A]

Hello again Shaun

I've just tested your connection and can see no network issues for the 5th. Interestingly a couple of adjacent upstreams are experiencing noise problems but yours are not.

As you are experiencing timeouts and Hub reboots I think I should arrange for an engineer to call. I shall send you a PM in a moment so please reply when you can and I'll make the necessary arrangements.

Thanks

[RockerSBM]

Hi Jen

The SNR keeps dropping to 34 and going back up too 38 and the power levels too go from 0 to +8 can you see anything on the network now? i got in from work and the SNR was showing 34 now they are at 37 38. No noise showing on the line post rs error are fine.

speeds im getting is 19 meg on the xbox one 

cheers

shaun

[Nat_J]

Thanks for updating the thread Shaun,

I've checked the account affected and I've raised an issue detected with the network over to the relevant team to flag and note on the system. This concerns a high demand for our service in your area.

More information regarding this will be available soon,

Nat_J

[RockerSBM]

Hi Jen

I think i still have this problem cos i have noise on the network too can you check this?

"1.3.6.1.2.1.10.127.1.1.4.1.4.3":"4398",
"1.3.6.1.2.1.10.127.1.1.4.1.4.48":"4623",
"1.3.6.1.2.1.10.127.1.1.4.1.4.49":"3427",
"1.3.6.1.2.1.10.127.1.1.4.1.4.50":"4619",
"1.3.6.1.2.1.10.127.1.1.4.1.4.51":"3545",
"1.3.6.1.2.1.10.127.1.1.4.1.4.52":"3766",
"1.3.6.1.2.1.10.127.1.1.4.1.4.53":"3621",
"1.3.6.1.2.1.10.127.1.1.4.1.4.54":"3439",
"1.3.6.1.2.1.10.127.1.1.4.1.4.55":"4269",
"1.3.6.1.2.1.10.127.1.1.4.1.4.56":"3668",
"1.3.6.1.2.1.10.127.1.1.4.1.4.57":"3691",
"1.3.6.1.2.1.10.127.1.1.4.1.4.58":"4489",
"1.3.6.1.2.1.10.127.1.1.4.1.4.59":"3930",
"1.3.6.1.2.1.10.127.1.1.4.1.4.60":"4187",
"1.3.6.1.2.1.10.127.1.1.4.1.4.61":"3883",
"1.3.6.1.2.1.10.127.1.1.4.1.4.62":"3920",
"1.3.6.1.2.1.10.127.1.1.4.1.4.63":"3935",
"1.3.6.1.2.1.10.127.1.1.4.1.4.64":"3977",
"1.3.6.1.2.1.10.127.1.1.4.1.4.65":"5049",
"1.3.6.1.2.1.10.127.1.1.4.1.4.66":"3962",
"1.3.6.1.2.1.10.127.1.1.4.1.4.67":"3792",
"1.3.6.1.2.1.10.127.1.1.4.1.4.68":"3868",
"1.3.6.1.2.1.10.127.1.1.4.1.4.69":"3793",
"1.3.6.1.2.1.10.127.1.1.4.1.4.70":"3648",
"1":"Finish"

Cheers

shaun 

[Nicola_C]

Hello Shaun

Yes sorry we do have an issue and are investigating F005288104 est fix 18 MAY 2017. I have updated your account notes so hopefully you may receive SMS updates.

Thank you for you patience

[RockerSBM]

Hi Nicola

Thanks for the update
Cheers once again.

Shaun

[RockerSBM]

Hi Nicola 

After they did repair work the downstream SNR is low at 33 used to be good in this area at 38 to 39 SNR theres no noise online line just wanted to know why the SNR so low? upstream power moves abit.

its not the wisewood address.

Refresh data

Downstream bonded channels Channel Frequency(Hz) Power
(dBmV) SNR
(dB) Modulation Channel ID

1	299000000	3.2	35.5	256 qam	21
2	323000000	3.7	36.6	256 qam	24
3	315000000	3.5	36.6	256 qam	23
4	307000000	3.4	36.3	256 qam	22
5	291000000	3.4	36.3	256 qam	20
6	283000000	3.7	36.3	256 qam	19
7	275000000	4.4	36.6	256 qam	18
8	267000000	4.4	36.6	256 qam	17
9	259000000	4.5	36.3	256 qam	16
10	251000000	4	35.7	256 qam	15
11	243000000	3.5	35.5	256 qam	14
12	235000000	2	33.9	256 qam	13
13	227000000	2.5	33.8	256 qam	12
14	219000000	3.5	34.9	256 qam	11
15	211000000	4	34.9	256 qam	10
16	203000000	4.5	35.5	256 qam	9
17	195000000	5	35.7	256 qam	8
18	187000000	5.6	35	256 qam	7
19	179000000	5.8	35.7	256 qam	6
20	171000000	6.4	36.3	256 qam	5
21	163000000	6.5	35.7	256 qam	4
22	155000000	7	36.3	256 qam	3
23	147000000	7.3	35.7	256 qam	2
24	139000000	7.1	35.5	256 qam	1

Upstream bonded channels Channel ID Frequency(Hz) Mode Power
(dBmV) Modulation Channel Bandwidth(Hz) Symbol Rate (ksps)

4	25800000	ATDMA	48.3	16 qam	6400000	5120
3	32600000	ATDMA	48.3	16 qam	6400000	5120

cheers

shaun

[Emma_E]

Hi RockerSBM, 

Thanks for getting back in touch and for the additional information provided. 

Nic is out of office for a couple of days so i hope you don't mind me picking this up. 

The downstream modem SNR is looking ok from this side currently.  The SNR for the CMTS in general is fine for the type of CMTS you are on. 

I can see however that there is some trouble with slow speeds during peak times on the upstreams. 

I have popped the details across to Networks and will let you know as soon as I know more. 

How are you finding the connection in general now? 

All the best

Emma

[Emma_E]

Hi RockerSBM, 

Just a quick update a fault has been raised ref F005361227 for slow speeds at peak times. 

Please give this thread a bump over the next few days and we will get an update on this for you. 

Take care, 

Emma