Hi all,My 1gig VM service has been working fine since it was installed and all of a sudden a few days ago I started to get somewhere around 1mb download, upload seems fine, about 4-5 times a day and only a reboot of the router fixes it. My setup ideally uses Modem mode but I've tested in router mode and it's happening in either mode.I've been searching the forum today and noticed a lot of people using RealSpeed so I'm just waiting for it to happen again so I can run that (typically it's not happened since...) I can't find a reference guide for expected power but after browsing a number of threads and seeing other peoples results I'm a bit worried that mine are looking low, but I'm not sure.If someone could take a look and let me know then that would be great. Cable Modem StatusItem Status TypeChannel Overview Downstream UpstreamCable Modem StatusOnlineDOCSIS 3.0Primary downstream channelLockedSC-QAMDOCSIS 3.0 channels325DOCSIS 3.1 channels113.0 Downstream channelsChannel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID 1331000000-7.141QAM 256252139000000-2.243QAM 25613147000000-2.743QAM 25624155000000-2.843QAM 25635163000000-3.543QAM 25646171000000-3.643QAM 25657179000000-4.143QAM 25668187000000-443QAM 25679195000000-4.143QAM 256810203000000-4.443QAM 256911211000000-4.642QAM 2561012219000000-5.142QAM 2561113227000000-5.342QAM 2561214235000000-642QAM 2561315243000000-6.241QAM 2561416251000000-7.140QAM 2561517259000000-6.840QAM 2561618267000000-6.540QAM 2561719275000000-6.340QAM 2561820283000000-6.340QAM 2561921291000000-6.340QAM 2562022299000000-6.640QAM 2562123307000000-6.841QAM 2562224315000000-6.841QAM 2562325323000000-741QAM 2562426339000000-741QAM 2562627347000000-7.241QAM 2562728355000000-7.840QAM 2562829363000000-840QAM 2562930371000000-8.740QAM 2563031379000000-939QAM 2563132387000000-9.239QAM 256323.0 Downstream channelsChannel Locked Status RxMER (dB) Pre RS Errors Post RS Errors 1Locked41002Locked43003Locked43004Locked43005Locked43006Locked43007Locked43008Locked43009Locked430010Locked430011Locked420012Locked420013Locked420014Locked420015Locked410016Locked400017Locked400018Locked400019Locked400020Locked400021Locked400022Locked400023Locked410024Locked410025Locked410026Locked411027Locked410028Locked401029Locked400030Locked402031Locked391032Locked39003.1 Downstream channelsChannel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz) 159944K1840QAM 409611083.1 Downstream channelsChannel ID Locked Status RxMER Data (dB) PLC Power (dBmV) Corrected errors (Active Profile) Uncorrectable errors (Active Profile) 159Locked29-20.332783974744287653 3.0 Upstream channelsChannel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID 04960000050.35120QAM 64114310000048.85120QAM 64223660000048.85120QAM 64333010000047.85120QAM 64442360000048.35120QAM 6453.0 Upstream channelsChannel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts 0ATDMA00001ATDMA00002ATDMA00303ATDMA00004ATDMA00003.1 Upstream channelsChannel Channel Width (MHz) Power (dBmV) FFT Type Modulation 61044.22KQAM 2563.1 Upstream channelsChannel Channel Type Number of Active Subcarriers First Active Subcarrier (Hz) T3 Timeouts T4 Timeouts 6OFDMA2007400000000 ThanksSpence

setup a BQMBroadband Quality Monitor | thinkbroadbandA amp might of failed giving you low power levels mainly on the 3.1 Downstream channel

Taken at face value the 3.0 Downstream signals are as much as 10 dB lowand the 3.1 Downstream signal is about 20 dB low.Kind of very odd that the 3.0 Upstream signals are all connected at 64 QAMand in an acceptable power range.Check for known faults in your street ( do use try both methods ) Call 0800 561 0061 – this is an automated number.https://www.virginmedia.com/help/check/status/identification/identify

A VM Engineer is needed to correct the power levels.Get on to Customer support it is the only way to progress.

Engineer booked in, thanks for the help

xpenno255

Tuning in

2 months ago

Hub5 intermittently drops from 1gb down to 1-5mb

Hi all,

My 1gig VM service has been working fine since it was installed and all of a sudden a few days ago I started to get somewhere around 1mb download, upload seems fine, about 4-5 times a day and only a reboot of the router fixes it. My setup ideally uses Modem mode but I've tested in router mode and it's happening in either mode.

I've been searching the forum today and noticed a lot of people using RealSpeed so I'm just waiting for it to happen again so I can run that (typically it's not happened since...)

I can't find a reference guide for expected power but after browsing a number of threads and seeing other peoples results I'm a bit worried that mine are looking low, but I'm not sure.

If someone could take a look and let me know then that would be great.

Cable Modem StatusItem Status TypeChannel Overview Downstream Upstream

Cable Modem Status	Online	DOCSIS 3.0
Primary downstream channel	Locked	SC-QAM
DOCSIS 3.0 channels	32	5
DOCSIS 3.1 channels	1	1

3.0 Downstream channels

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

1	331000000	-7.1	41	QAM 256	25
2	139000000	-2.2	43	QAM 256	1
3	147000000	-2.7	43	QAM 256	2
4	155000000	-2.8	43	QAM 256	3
5	163000000	-3.5	43	QAM 256	4
6	171000000	-3.6	43	QAM 256	5
7	179000000	-4.1	43	QAM 256	6
8	187000000	-4	43	QAM 256	7
9	195000000	-4.1	43	QAM 256	8
10	203000000	-4.4	43	QAM 256	9
11	211000000	-4.6	42	QAM 256	10
12	219000000	-5.1	42	QAM 256	11
13	227000000	-5.3	42	QAM 256	12
14	235000000	-6	42	QAM 256	13
15	243000000	-6.2	41	QAM 256	14
16	251000000	-7.1	40	QAM 256	15
17	259000000	-6.8	40	QAM 256	16
18	267000000	-6.5	40	QAM 256	17
19	275000000	-6.3	40	QAM 256	18
20	283000000	-6.3	40	QAM 256	19
21	291000000	-6.3	40	QAM 256	20
22	299000000	-6.6	40	QAM 256	21
23	307000000	-6.8	41	QAM 256	22
24	315000000	-6.8	41	QAM 256	23
25	323000000	-7	41	QAM 256	24
26	339000000	-7	41	QAM 256	26
27	347000000	-7.2	41	QAM 256	27
28	355000000	-7.8	40	QAM 256	28
29	363000000	-8	40	QAM 256	29
30	371000000	-8.7	40	QAM 256	30
31	379000000	-9	39	QAM 256	31
32	387000000	-9.2	39	QAM 256	32

3.0 Downstream channels

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

1	Locked	41	0
2	Locked	43	0
3	Locked	43	0
4	Locked	43	0
5	Locked	43	0
6	Locked	43	0
7	Locked	43	0
8	Locked	43	0
9	Locked	43	0
10	Locked	43	0
11	Locked	42	0
12	Locked	42	0
13	Locked	42	0
14	Locked	42	0
15	Locked	41	0
16	Locked	40	0
17	Locked	40	0
18	Locked	40	0
19	Locked	40	0
20	Locked	40	0
21	Locked	40	0
22	Locked	40	0
23	Locked	41	0
24	Locked	41	0
25	Locked	41	0
26	Locked	41	1
27	Locked	41	0
28	Locked	40	1
29	Locked	40	0
30	Locked	40	2
31	Locked	39	1
32	Locked	39	0

3.1 Downstream channels

Channel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz)

159

1840

QAM 4096

1108

3.1 Downstream channels

Channel ID Locked Status RxMER Data (dB) PLC Power (dBmV) Corrected errors (Active Profile) Uncorrectable errors (Active Profile)

159

Locked

-20.3

327839747

44287653

3.0 Upstream channels

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

0	49600000	50.3	5120	QAM 64	1
1	43100000	48.8	5120	QAM 64	2
2	36600000	48.8	5120	QAM 64	3
3	30100000	47.8	5120	QAM 64	4
4	23600000	48.3	5120	QAM 64	5

3.0 Upstream channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

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

3.1 Upstream channels

Channel Channel Width (MHz) Power (dBmV) FFT Type Modulation

44.2

QAM 256

3.1 Upstream channels

Channel Channel Type Number of Active Subcarriers First Active Subcarrier (Hz) T3 Timeouts T4 Timeouts

OFDMA

200

74000000

Thanks

Spence

legacy1
Alessandro Volta
2 months ago
setup a BQM
Broadband Quality Monitor | thinkbroadband
A amp might of failed giving you low power levels mainly on the 3.1 Downstream channel
- xpenno255
  Tuning in
  2 months ago
  Created, thanks
xpenno255
Tuning in
2 months ago
Ok, pretty much as soon as I setup the BQM test it happened again.... here's the RealSpeed output.
xpenno255
Tuning in
2 months ago
Here's a link to my BQM
<a title="Broadband Ping" href="https://www.thinkbroadband.com/broadband/monitoring/quality/share/5ae9d0d7f60a60820dcc35018500ccfd9eeb35b2"><img alt="My Broadband Ping - VM Home" src="https://www.thinkbroadband.com/broadband/monitoring/quality/share/5ae9d0d7f60a60820dcc35018500ccfd9eeb35b2.png" /></a>
- xpenno255
  Tuning in
  2 months ago
  Second attempt...
  BQM Results
Client62
Alessandro Volta
2 months ago
Taken at face value the 3.0 Downstream signals are as much as 10 dB low
and the 3.1 Downstream signal is about 20 dB low.

Kind of very odd that the 3.0 Upstream signals are all connected at 64 QAM
and in an acceptable power range.

Check for known faults in your street ( do use try both methods )

Call 0800 561 0061 – this is an automated number.

https://www.virginmedia.com/help/check/status/identification/identify
- xpenno255
  Tuning in
  2 months ago
  Thanks, I've checked both methods and there's nothing reported in my area.
legacy1
Alessandro Volta
2 months ago
what the speed done here for x1 vs x6
UK Broadband Speed Test | thinkbroadband
also muiti vs single test here
Speedtest by Ookla - The Global Broadband Speed Test
- xpenno255
  Tuning in
  2 months ago
  Here are the requested results, note that these are all post the router being rebooted. I'll take another set when the issue reoccurs.
  Here's the RealSpeed test post the Hub reboot for comparison also.
Client62
Alessandro Volta
2 months ago
A VM Engineer is needed to correct the power levels.
Get on to Customer support it is the only way to progress.
xpenno255
Tuning in
2 months ago
Engineer booked in, thanks for the help

Forum Discussion

Hub5 intermittently drops from 1gb down to 1-5mb

Related Content

Intermittent broadband Freeze and Drop out

Connection keeps dropping

Intermittent Drop outs

Intermittent Broadband

Intermittent Signal