Virgin Media Community

[Justin020466]

Hi all, Just had a Hub 4 it has solved most of my problems but the one i actually called Virgin for in the first place. My upstream power has always been up there, now unless Hub 4 has different settings that I am not aware of they seem extremely high.

Here are the Upstream logs, and a BQM Snapshot

3.0 Downstream channelsChannel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID

1	410250000	3.900002	38.605377	QAM256	1
2	418250000	4.000000	38.605377	QAM256	2
3	426250000	3.900002	38.983261	QAM256	3
4	434250000	4.300003	38.605377	QAM256	4
5	442250000	3.500000	38.605377	QAM256	5
6	450250000	3.500000	38.983261	QAM256	6
7	458250000	3.099998	38.605377	QAM256	7
8	466250000	2.000000	38.605377	QAM256	8
9	474250000	3.299999	38.605377	QAM256	9
10	482250000	2.299999	38.605377	QAM256	10
11	490250000	3.500000	38.605377	QAM256	11
12	498250000	3.200001	38.605377	QAM256	12
13	506250000	3.599998	38.983261	QAM256	13
14	514250000	3.900002	38.983261	QAM256	14
15	522250000	3.900002	38.983261	QAM256	15
16	530250000	4.500000	38.983261	QAM256	16
17	538250000	4.800003	38.983261	QAM256	17
18	546250000	4.400002	38.983261	QAM256	18
19	554250000	4.400002	38.983261	QAM256	19
20	562250000	4.000000	38.605377	QAM256	20
21	570250000	3.700001	38.983261	QAM256	21
22	578250000	4.199997	38.983261	QAM256	22
23	586250000	2.700001	38.983261	QAM256	23
24	594250000	4.000000	38.983261	QAM256	24
25	602250000	2.500000	38.983261	QAM256	25
26	610250000	3.200001	38.983261	QAM256	26
27	618250000	3.299999	34.925610	QAM256	27
28	658250000	2.599998	38.983261	QAM256	28
29	666250000	1.799999	38.605377	QAM256	29
30	674250000	1.700001	38.605377	QAM256	30
31	682250000	1.500000	38.983261	QAM256	31

3.0 Upstream channels

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

1	25800000	59.020599	5120 KSym/sec	64QAM	4
2	46200000	53.270599	5120 KSym/sec	64QAM	1
3	32600000	58.520599	5120 KSym/sec	64QAM	3
4	39400000	53.020599	5120 KSym/sec	64QAM	2

3.0 Upstream channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1	US_TYPE_STDMA	0	0	3	0
2	US_TYPE_STDMA	0	0	3	0
3	US_TYPE_STDMA	0	0	3	0
4	US_TYPE_STDMA	0	0	3	0

https://www.thinkbroadband.com/broadband/monitoring/quality/share/7d054b0cb32031973c81920479d7fc326b... 

[MikeRobbo · Accepted solution]

It certainly is.

This will need an engineer to put right.

You can either call in (08:00 is the best time) or wait on here for a few days (6 to 10 days average) until one of the VM Forum Staff comes along.

If you wait on here Do Not bump the thread it will put it further down the VM 'to do list'.

[Justin020466]

Thanks for the quick reply, I will call in the morning I have to say the hub 4 has made things a lot better I am not sure why the engineer didn't sort the power levels out as I showed him them historically from the hub 3 and from the Hub 4 log page. 

Have a good day 

[carl_pearce]

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@Justin020466 wrote:

Thanks for the quick reply, I will call in the morning I have to say the hub 4 has made things a lot better I am not sure why the engineer didn't sort the power levels out as I showed him them historically from the hub 3 and from the Hub 4 log page. 

Have a good day 

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Have you checked if you are getting your package speeds?

[Justin020466]

Hit and miss on speeds dependant on area usage, knowing this area is Overutilized.

I'm on 200mb so, the old Hub 3 regularly only reached 0.34mbps 0.40mbps at peak, but quieter times over 200mbps.

Since hub 4 installation I have not had a speed below 50Mbps at peak, 0 post errors, 0 Packet Loss, 0 errors in network log but still looks noisy according to my BQM.

I am hoping once Upstream Levels are back to spec things may be calmer.

[carl_pearce]

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@Justin020466 wrote:

Hit and miss on speeds dependant on area usage, knowing this area is Overutilized.

I'm on 200mb so, the old Hub 3 regularly only reached 0.34mbps 0.40mbps at peak, but quieter times over 200mbps.

Since hub 4 installation I have not had a speed below 50Mbps at peak, 0 post errors, 0 Packet Loss, 0 errors in network log but still looks noisy according to my BQM.

I am hoping once Upstream Levels are back to spec things may be calmer.

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Your BQM does NOT show overutilization:

This example does:

[Justin020466]

Thanks,

That's how it was on the Hub 3 but the hub 4 has it down to this which is great.

Other customers in the street have the same issue as I did.

Am I putting too much stock in the high upstream levels ?

[carl_pearce · Accepted solution]

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@Justin020466 wrote:

Thanks,

That's how it was on the Hub 3 but the hub 4 has it down to this which is great.

Other customers in the street have the same issue as I did.

Am I putting too much stock in the high upstream levels ?

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The upstream power levels are too high, and do need adjusting.