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Hub 5 High Download Errors

grunkp
Dialled in

Just noticed that most of the Downstream Channels have a high number of Pre RS Errors a few downstream channels also have high Post RS Errors.

The downstream corrected errors and the uncorrected errors are in the 100's of millions and increasing.

The Hub5 LOg shows frequent CMS Notices

CM-STATUS message sent. Event Type Code: -  toggling between 24 and 16.

The Upstream Channels show zero errors

Modem was rebooted some 8hrs ago.

Hub 5 also refuses to go into Modem Mode !

Is the HUB 5 on the way out or is there an issue at the street cab ?

3.0 Downstream channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
1586000000134QAM 25629
23620000002.135QAM 2561
33700000002.237QAM 2562
43780000002.437QAM 2563
53860000002.236QAM 2564
63940000001.931QAM 2565
74020000001.935QAM 2566
84100000001.634QAM 2567
94180000001.431QAM 2568
104260000001.129QAM 2569
114340000000.931QAM 25610
124420000001.131QAM 25611
134500000001.333QAM 25612
144580000001.132QAM 25613
154660000001.532QAM 25614
165460000000.734QAM 25624
175540000000.832QAM 25625
185620000000.936QAM 25626
195700000000.736QAM 25627
205780000000.735QAM 25628
216020000000.932QAM 25631
226100000000.638QAM 25632
236180000000.138QAM 25633
246260000000.438QAM 25634
256340000000.434QAM 25635
266580000000.328QAM 25636
276660000000.234QAM 25637
286740000000.334QAM 25638
29682000000030QAM 25639
306900000000.532QAM 25640

 

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

1Locked343398060
2Locked352078
3Locked37630
4Locked37771
5Locked36320
6Locked31139444925117662
7Locked354482
8Locked3471810
9Locked3188154901
10Locked292140829889
11Locked31754181413479
12Locked3118665532518285537
13Locked3353044760
14Locked3224951610
15Locked328380830
16Locked341553180
17Locked3219716760
18Locked36730
19Locked361420
20Locked3519970
21Locked3272511070
22Locked3850
23Locked38130
24Locked38210
25Locked3442670
26Locked28706277852104257
27Locked34612640
28Locked343444760
29Locked301563616653566
30Locked3241667493383130

3.1 Downstream channels

Channel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz)
41944K1840QAM 40961108

3.1 Downstream channels

Channel ID Locked Status RxMER Data (dB) PLC Power (dBmV) Corrected errors (Active Profile) Uncorrectable errors (Active Profile)
41Locked34-1.6196932617192767441
19 REPLIES 19

Client62
Alessandro Volta

The Post RS errors are a network issue that VM need to fix - it may be affecting more that just you.

Try both methods below to see if a fault is reported in your street :

Call 0800 561 0061 – this is an automated number.
https://www.virginmedia.com/help/check/status/identification/identify


When you say will not go into Modem mode, what happens ? ( a screen shot perhaps if there is an error message )

No Broadband errors reported via Virgin Status. - just something about Sky+ and football !!

Re Modem Mode . I tick the Modem Mode box, save and reboot.. Hub 5 returns in Router Mode (white light) and no reported error. I'll give it another go in the morning as hub as been rebooted several times since last trying.

jpeg1
Alessandro Volta

Check that all coax connectors are properly fitted and there is no damage to the cables. 

- jpeg1
My name is NOT Alessandro. That's just a tag Virginmedia sticks on some contributors. Please ignore it.

grunkp
Dialled in

OK, Once more I've tried setting modem mode. When hitting save , the spinning star appears, but the modem does

not reset or reboot and no changes are made. Is a hub pinhole reset now called for ?

 

Tudor
Very Insightful Person
Very Insightful Person

SNR far too low on a lot of channels. Because of the random spread of errors I don’t think it’s noise ingress, but more likely a faulty hub or just possibly a cable/street box problem, I would choose the former. It would also be nice to see the upstream figures, they are just as important.


Tudor
There are 10 types of people: those who understand binary and those who don't and F people out of 10 who do not understand hexadecimal c1a2a285948293859940d9a49385a2

grunkp
Dialled in

Thanks Tudor. I'll give the hub a pinhole reset tomorrow and see if that helps.

3.0 Upstream channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
04960000050.35120QAM 645
14310000048.85120QAM 646
236600000455120QAM 647
330100000475120QAM 648
423600000495120QAM 6410

3.0 Upstream channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts
0ATDMA0000
1ATDMA0000
2ATDMA0000
3ATDMA0000
4ATDMA0000

3.1 Upstream channels

Channel Channel Width (MHz) Power (dBmV) FFT Type Modulation
1310.443.52KQAM 256

3.1 Upstream channels

Channel Channel Type Number of Active Subcarriers First Active Subcarrier (Hz) T3 Timeouts T4 Timeouts
     
13OFDMA208740000000

Tudor
Very Insightful Person
Very Insightful Person

You have high power levels for upstream and low power levels for downstream. This is indicative of one of these, a long way from cabinet or bad cable to cabinet. The first could possible be helped by a move to a different tap on the street cabinet, the second a cable re pull possible with a higher grade coax. In either case you need a technicians visit to rectify. Call Customer Services on 0345 454 1111/150 if you have a VM landline or wait two or three days for a VM staff member to get to your post.


Tudor
There are 10 types of people: those who understand binary and those who don't and F people out of 10 who do not understand hexadecimal c1a2a285948293859940d9a49385a2

grunkp
Dialled in

Cable is from the Comtel days ! I'll call CS in the morning. Thank you.

Hub 5 just mysteriously reboot and came up in ROUTER mode !!

Still lots of PRE RS Errors, but less POST RS

The Corrected and uncorrected errors remain hi.

 

Network Log

31-10-2024 22:00:12noticeGUI Login Status - Login Success from LAN interface
31-10-2024 21:53:04noticeCM-STATUS message sent. Event Type Code: 16; Chan ID: 41; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1 2 3.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
31-10-2024 21:52:42noticeREGISTRATION COMPLETE - Waiting for Operational status
31-10-2024 21:52:38warningRNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
31-10-2024 21:52:37noticeUS profile assignment change. US Chan ID: 13; Previous Profile: 13; New Profile: 11 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
31-10-2024 21:52:37warningRCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
31-10-2024 21:52:32noticeDS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
31-10-2024 21:52:28noticeTLV-11 - unrecognized OID;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
31-10-2024 21:52:26warningDHCP WARNING - Non-critical field invalid in response ;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
31-10-2024 21:52:23noticeHonoring MDD; IP provisioning mode = IPv4
31-10-2024 21:52:13criticalSYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
31-10-2024 21:52:13criticalCable Modem Reboot because of - Reboot Timezone Change
31-10-2024 21:49:46criticalReceived 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;
31-10-2024 21:49:32criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
31-10-2024 21:49:32criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
31-10-2024 21:49:27criticalNo Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
31-10-2024 21:49:27criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
31-10-2024 21:49:15criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
31-10-2024 21:49:14criticalNo Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
31-10-2024 21:49:11criticalNo Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
31-10-2024 21:49:11criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
31-10-2024 21:49:04criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
31-10-2024 21:49:04criticalNo Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
31-10-2024 21:49:04criticalReceived 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;
31-10-2024 21:49:04criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
31-10-2024 21:48:59criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
31-10-2024 21:48:59criticalNo Maintenance Broadcasts for Ranging opportunities received - T2 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
31-10-2024 21:48:53criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
31-10-2024 21:48:53criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
31-10-2024 21:48:51criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
31-10-2024 21:48:51criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
31-10-2024 21:48:50criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
31-10-2024 21:48:50criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

Tudor
Very Insightful Person
Very Insightful Person

Don’t like this message "Cable Modem Reboot because of - Reboot Timezone Change" tends to imply a hub fault, especially as it’s rebooted. Just have to see what the technician says.


Tudor
There are 10 types of people: those who understand binary and those who don't and F people out of 10 who do not understand hexadecimal c1a2a285948293859940d9a49385a2