Gig1 has recently become much slower and unreliable

[philshems]

Since upgrading to Gig1 and a Hub 4 several months ago, download and upload speeds have been excellent and stable. About a week ago there were a couple of days of intermittent network problems in BR4 and since then speeds have been extremely variable.

Today, using Samknows I measured the following download/upload speeds in the space of an hour:

221 / 1.87

229 / 0.91

1080 / 5.72

Upload speeds seem particularly affected. I'll post BQM graph and router status info next, and if anyone can suggest anything I'd be really grateful.

I've rebooted the router serveral times, and checked all the conncections.

[philshems]

BQM from today. 2.30pm was my son streaming via Twitch. Lots of dropped frames (20%), when normally there are 0%.

[philshems]

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

1	138750000	2.900002	35.972961	QAM256	1
2	146750000	2.400002	36.386890	QAM256	2
3	154750000	2.299999	36.609653	QAM256	3
4	162750000	2.400002	37.636276	QAM256	4
5	170750000	2.799999	38.983261	QAM256	5
6	178750000	2.700001	38.605377	QAM256	6
7	186750000	2.900002	38.605377	QAM256	7
8	194750000	2.900002	38.983261	QAM256	8
9	202750000	2.799999	39.397190	QAM256	9
10	210750000	2.700001	39.397190	QAM256	10
11	218750000	2.200001	39.397190	QAM256	11
12	226750000	2.599998	39.397190	QAM256	12
13	234750000	2.500000	38.983261	QAM256	13
14	242750000	2.299999	38.983261	QAM256	14
15	250750000	1.799999	38.605377	QAM256	15
16	258750000	1.599998	39.397190	QAM256	16
17	266750000	2.000000	38.983261	QAM256	17
18	274750000	1.700001	39.397190	QAM256	18
19	282750000	1.799999	39.397190	QAM256	19
20	290750000	1.700001	38.983261	QAM256	20
21	298750000	2.400002	38.983261	QAM256	21
22	306750000	2.900002	38.983261	QAM256	22
23	314750000	2.500000	38.983261	QAM256	23
24	322750000	2.400002	38.605377	QAM256	24
25	330750000	1.099998	38.983261	QAM256	25
26	338750000	1.299999	38.983261	QAM256	26
27	346750000	2.400002	38.983261	QAM256	27
28	354750000	2.200001	38.983261	QAM256	28
29	362750000	2.400002	38.983261	QAM256	29
30	370750000	1.000000	38.605377	QAM256	30
31	378750000	0.599998	38.983261	QAM256	31

3.0 Downstream channelsChannel Lock Status RxMER (dB) Pre RS Errors Post RS Errors

1	NotLocked	35.972961	227853	212161
2	Locked	36.386890	31419	82698
3	Locked	36.609653	319765	57328
4	Locked	37.636276	822696	139021
5	Locked	38.983261	25128	33183
6	Locked	38.605377	25406	32730
7	Locked	38.605377	25745	29994
8	Locked	38.983261	25589	28101
9	Locked	39.397190	25598	28725
10	Locked	39.397190	24815	29043
11	Locked	39.397190	25099	26420
12	Locked	39.397190	24935	28031
13	Locked	38.983261	23837	29588
14	Locked	38.983261	24935	27561
15	Locked	38.605377	25963	26394
16	Locked	39.397190	24856	29250
17	Locked	38.983261	25319	28043
18	Locked	39.397190	27777	21609
19	Locked	39.397190	27156	22115
20	Locked	38.983261	27570	22209
21	Locked	38.983261	30484	16794
22	Locked	38.983261	34143	8230
23	Locked	38.983261	33665	10539
24	Locked	38.605377	34362	7009
25	Locked	38.983261	33323	1921
26	Locked	38.983261	33819	2425
27	Locked	38.983261	34203	6380
28	Locked	38.983261	34015	2636
29	Locked	38.983261	33640	2616
30	Locked	38.605377	32545	10227
31	Locked	38.983261	31822	12255

[philshems]

3.1 Downstream channels

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

159

86

4K

1680

QAM2048

424

3.1 Downstream channels

Channel ID Lock Status RxMER Data (dB) PLC Power (dBmV) Correcteds (Active Profile) Uncorrectables (Active Profile)

159

Locked

42

4.0

5903766

74

[philshems]

3.0 Upstream channels

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

1	32600000	53.020599	5120 KSym/sec	64QAM	4
2	39400000	53.020599	5120 KSym/sec	64QAM	3
3	46200000	53.020599	5120 KSym/sec	64QAM	2
4	53700000	52.770599	5120 KSym/sec	64QAM	1

3.0 Upstream channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1	US_TYPE_STDMA	0	0	5	0
2	US_TYPE_STDMA	0	0	6	0
3	US_TYPE_STDMA	0	0	3	0
4	US_TYPE_STDMA	0	0	1	0

[philshems]

Last one from me:

The Network Log is completely blank, so there's nothing to post from there.

[jbrennand]

Awful BQM!

Someone more used to Hub4 stats needs to comment - but the up speeds all look high and there are a worrying number of PostRS errors - I would reset the Hub to clear them to 0 and see if they then reappear - they shouldnt.  Many are reporting their Logs are not building up - others have put it down to a firmware update glitch

Whilst waiting , have you checked first for “known network faults”

As well as trying the “check service,” Area status webpage" (link at top right of this forum), also try the “free & automated” Service Status number - 0800 561 0061 - which usually gives the most up to date info. and tells you of more local issues down to postcode level.

[conman33158]

3.1 Downstream channels

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

159

86

4K

1680

QAM2048

424

Your 3.1 modulation is wrong, should be on QAM4096 plus your upload power levels are maxed out. You definitely have problems and would need an engineers visit.

[David_Bn]

Thanks for your post @philshems, and I'm sorry to hear of the issues with the services.

Having ran a flow on our system, we would like you to monitor your connection over the next 7 days and come back to us if the issue still persists.

As our flow has identified a very short term connectivity issue which may cause intermittent or performance related issues with your connection.

We believe that the issue is only impacting you connection but it'll only be a very short term issue and the connection will return to normal very soon.

As this is only impacting your connection, can you please check that all cables are connected securely. The issue that has been identified may be the result of a loose connecting cable.

Please check the white coax cable to the hub, as well as the splitters and wall sockets to make sure all cables are connected to the VM equipment securely 

Kindest regards,

David_Bn

[philshems]

Thanks David. I'm away for a couple of days but will double check all the connections and then monitor the speed when I get back. Cheers.