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Service dropouts, speed bumps, time outs, RS Errors

GrumpyOldAVGuy
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I've been having intermittent Internet over ethernet and WiFi. I have been getting this issue intermittently everyday for around three weeks. I have checked all Coax connections and reseated them which helped a little with the RS errors, rebooted the Hub3, but the underlying problem still persists. anyone have any ideas? All help greatly appreciated.

IGNORE the 23 minute outtage at 01.03am - That was me checking coax connections.

Downstream bonded channels

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

13230000001.240256 qam24
21390000002.940256 qam1
31470000002.738256 qam2
41550000002.540256 qam3
51630000002.540256 qam4
61710000002.740256 qam5
71790000002.540256 qam6
81870000002.738256 qam7
91950000002.740256 qam8
102030000002.740256 qam9
112110000002.540256 qam10
122190000002.536256 qam11
132270000002.438256 qam12
142350000002.240256 qam13
15243000000240256 qam14
162510000001.940256 qam15
172590000001.540256 qam16
182670000001.540256 qam17
192750000001.440256 qam18
20283000000140256 qam19
21291000000140256 qam20
22299000000140256 qam21
233070000000.740256 qam22
24315000000140256 qam23



Downstream bonded channels

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

1Locked40.950
2Locked40.3560
3Locked40.950
4Locked40.3270
5Locked40.9130
6Locked40.3100
7Locked40.360
8Locked40.360
9Locked40.970
10Locked40.350
11Locked40.3100
12Locked36.660
13Locked38.6120
14Locked40.31869
15Locked40.9970
16Locked40.370
17Locked40.3110
18Locked40.370
19Locked40.350
20Locked40.350
21Locked40.3270
22Locked40.370
23Locked40.360
24Locked40.370

 

 

10 REPLIES 10

GrumpyOldAVGuy
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Upstream bonded channels

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

13259999132512064 qam13
22360000032512064 qam14
33940000032512064 qam12
44619998832512064 qam11
55369999832512064 qam10
66029997632512064 qam9



Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1ATDMA0000
2ATDMA0010
3ATDMA0000
4ATDMA0000
5ATDMA0000
6ATDMA0000

GrumpyOldAVGuy
Tuning in

General Configuration

Network access
Allowed
Maximum Number of CPEs
1
Baseline Privacy
Enabled
DOCSIS Mode
Docsis30
Config file
a69834ncxv9873254k;fg87ds



Primary Downstream Service Flow

SFID22212
Max Traffic Rate402500089
Max Traffic Burst42600
Min Traffic Rate0



Primary Upstream Service Flow

SFID22211
Max Traffic Rate38500089
Max Traffic Burst42600
Min Traffic Rate0
Max Concatenated Burst42600
Scheduling TypeBestEffort

GrumpyOldAVGuy
Tuning in

Network Log

Time Priority Description

22/10/2024 15:57:42criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:31:13noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:23:26Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:04:51criticalReceived Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:56Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:52Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:52criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:52Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:52criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:52Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:52Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:50Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:50criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:49Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:48criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:47Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:47criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:47Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:47criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
22/10/2024 01:01:46Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

GrumpyOldAVGuy
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GrumpyOldAVGuy
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GrumpyOldAVGuy
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GrumpyOldAVGuy_2-1729624401378.pngGrumpyOldAVGuy_3-1729624428671.png

 

GrumpyOldAVGuy
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GrumpyOldAVGuy_1-1729631403166.png

 

Hi @GrumpyOldAVGuy 

Welcome to the community forums.

Sorry to hear you're having service issues. I've checked the systems on our side and cannot see anything at this time that might be causing this. I can see that you've already a visit arranged to investigate this further. Please do keep us posted and let us know if you are having any further issues or have any questions at all. We'll be here to help on the community forums if needed

Here to help 🙂
Virgin Media Forums Agent
Carley

Hi Carley,

Thanks for coming back to me.

I am still experiencing some slow down and a very significant number of pre RS Errors and a number of post RS Errors. 

I'm running analysis software on a computer connected directly by cable to the HUB 3 and it is showing considerably high latencies (averaging around 35ms but running as high as 180ms with around 4 - 5 % packet drop.

FYI the Hub3 doesn't handle our WiFi connections - that's handled via an enterprise grade WAP.

I've a few more things to check out to be sure but I'm veering towards it being an issue with the fibre as the problems have only occurred since Street lighting engineers carried out work on the street and excavated a cable trench directly intersecting the fiber ducts! This of course may be a coincidence.

As you may have guessed from my moniker I've a reasonable knowledge of networks, and fibre installation as its something I do frequently in my day job  😀 

Thanks again,

Jim