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Asymmetric13
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Upload Speed extremely slow and temperamental (Gig1 customer)

Hello,

I hope that you (collectively) will be able to help me.

I am a Gig1 customer, and my upload speeds have tanked over the past week or so; I had wondered if this was due to increased load on the Virgin Media back-haul network over the festive period, but alas over the past few delays in particular it has become almost untenable for my use case.

I have included the network status information from my Super Hub 4 below in the hope that those more familiar with these values than I may be able to spot the issue (I'm leaning towards a problem with Upstream Channel 3 based on the logs).

With that said, beyond identifying the issue - I am (as one might expect) even more eager to determine a fix / resolution for the problem.

Should you (collectively) require any further information, please just let me know and I shall post it accordingly.

Thank you one and all in advance for your assistance.

 

Cable Modem StatusItem Status CommentsChannel Overview Downstream Upstream

Cable Modem Status
Online
DOCSIS 3.1
Primary downstream channel
Locked
SC-QAM
DOCSIS 3.0 channels
31
4
DOCSIS 3.1 channels
1
0


3.1 Downstream channelsChannel ID Lock Status RxMER Data (dB) PLC Power (dBmV) Correcteds (Active Profile) Uncorrectables (Active Profile)
159Locked 2.721312

0

 

3.0 Upstream channelsChannel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
13260000046.0205995120 KSym/sec64QAM5
23940000046.2705995120 KSym/sec64QAM4
34620000046.7705995120 KSym/sec64QAM3
45370000047.2705995120 KSym/sec64QAM2



3.0 Upstream channelsChannel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts
1US_TYPE_STDMA0020
2US_TYPE_STDMA0020
3US_TYPE_STDMA0020
4US_TYPE_STDMA0020

 

General Configuration
Network access
true
Maximum Number of CPEs
1
Baseline Privacy
true
DOCSIS Mode
3.1
Config file
;kfoA,.iyewrkldJKDHSUBsgv



Primary Downstream Service Flow
SFID
27022
Max Traffic Rate
1200000450
Max Traffic Burst
42600
Min Traffic Rate
0



Primary Upstream Service Flow
SFID
27021
Max Traffic Rate
55000270
Max Traffic Burst
42600
Min Traffic Rate
0
Max Concatenated Burst
16320
Scheduling Type
bestEffort
 
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Asymmetric13
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Re: Upload Speed extremely slow and temperamental (Gig1 customer)

Network Log

Time Priority Description

Thu 01/01/1970 00:05:375Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:05:393No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:05:515Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:05:543No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:05:575Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:05:573No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:06:255Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:06:293No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:06:375Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:06:393No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:06:495Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:06:503No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:06:555Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:06:573No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:07:035Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:07:083No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:07:155Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:07:155B-INIT-RNG Failure - Retries exceeded;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:07:243No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:07:475Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:07:543No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:07:595Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:08:103No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:08:155Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:08:223No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:08:275Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:08:323No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:08:415Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:08:433No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:08:475Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:09:043No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:09:235Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:09:283No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:09:355Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:09:415B-INIT-RNG Failure - Retries exceeded;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:09:453No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:09:555Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:10:103No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:10:275Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:10:273No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:10:395Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:10:593Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:11:215Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
Thu 01/01/1970 00:13:093No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
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MikeRobbo
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Re: Upload Speed extremely slow and temperamental (Gig1 customer)

You only have one Downstream Channel, you should have 32.

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'.


*********************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************************
BT Smart Hub 2 with 70Mbs Download,18Mbs Upload, 9.17ms Latency & 0.35ms Jitter.
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Asymmetric13
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Re: Upload Speed extremely slow and temperamental (Gig1 customer)

Hi MikeRobbo,

Thank you for your reply; I appreciate your support.

I fear an erroneous entry in my first post may have led you astray; I had not intended to include any of the information from "Downstream" Router Status tab, as my issue is related to upload. As I encountered character limits in my posts - I thought it would save space to remove these entries. Alas, one slipped through and so made it look like I have fewer than the expected 32 Downstream Channels when - in fact - I do not. Here is the full "Downstream" Router Status information (in this post and my next) to, hopefully, rule this element out / help with further diagnosis:

3.0 Downstream channels

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

323870000004.40000236.844463QAM25632
333950000003.79999936.609653QAM25633
344030000004.09999836.609653QAM25634
354110000004.40000236.609653QAM25635
364190000004.40000236.609653QAM25636
374270000004.19999736.609653QAM25637
384350000004.00000036.609653QAM25638
394430000004.50000037.355988QAM25639
404510000004.50000037.636276QAM25640
102110000004.69999737.636276QAM25610
112190000004.69999737.355988QAM25611
122270000004.80000337.636276QAM25612
132350000004.80000337.636276QAM25613
142430000004.69999737.355988QAM25614
152510000004.30000337.355988QAM25615
162590000004.90000237.636276QAM25616
172670000005.00000037.355988QAM25617
182750000004.90000237.636276QAM25618
192830000004.59999837.355988QAM25619
202910000004.19999737.636276QAM25620
212990000004.40000237.355988QAM25621
223070000004.90000236.609653QAM25622
233150000005.09999837.636276QAM25623
243230000004.90000236.609653QAM25624
253310000004.80000337.636276QAM25625
263390000005.19999737.636276QAM25626
273470000005.40000237.355988QAM25627
283550000005.09999837.355988QAM25628
293630000005.09999837.355988QAM25629
303710000005.09999837.355988QAM25630
313790000004.90000237.355988QAM25631
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Asymmetric13
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Re: Upload Speed extremely slow and temperamental (Gig1 customer)

Second Part of "Downstream" Router Status information:

3.0 Downstream channels

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

32Locked0150
33Locked548592925180
34Locked548271452220
35Locked520285269280
36Locked531984295450
37Locked550340491360
38Locked549853391350
39Locked524236453490
40Locked635790269400
10Locked64400978210
11Locked340498422100
12Locked59236354100
13Locked64718759200
14Locked64744654610
15Locked61502975000
16Locked270607495500
17Locked36184479700
18Locked36214396910
19Locked33350289810
20Locked34234405410
21Locked35740791400
22Locked35819981120
23Locked33658192220
24Locked51342511660
25Locked54469046740
26Locked54579333830
27Locked51650267740
28Locked57283085940
29Locked54592515110
30Locked54604955770
31Locked633884681120

 

 

3.1 Downstream channels

ChannelChannel Width (MHz)FFT TypeNumber of Active SubcarriersModulation (Active Profile)First Active Subcarrier (Hz)
159964K1880QAM256759



3.1 Downstream channels

Channel IDLock StatusRxMER Data (dB)PLC Power (dBmV)Correcteds (Active Profile)Uncorrectables (Active Profile)
159Locked 2.7213120
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