Forum Discussion

lakeland's avatar
lakeland
Tuning in
7 months ago

Internet grinds to a halt during the day - large number RS errors

I have a hub 3 and in the past few months, the internet frequently grinds to a halt during the day. I've looked at the logs, and there are high Pre and Post RS errors. I have switched off the router to clear the errors, checked and changed the cable, and changed the channel from auto, but the errors have resurfaced. The network log also lists errors, any ideas?

Logs below:

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

12670000002.938256 qam17
2275000000338256 qam18
32830000003.238256 qam19
42910000003.538256 qam20
52990000003.738256 qam21
63070000003.738256 qam22
73150000003.738256 qam23
83230000003.738256 qam24
93310000003.738256 qam25
103390000003.738256 qam26
113470000003.738256 qam27
123550000003.538256 qam28
133630000003.738256 qam29
143710000003.438256 qam30
153790000003.238256 qam31
163870000002.738256 qam32
173950000002.538256 qam33
184030000002.238256 qam34
194110000002.438256 qam35
20419000000238256 qam36
215230000001.738256 qam37
225310000001.738256 qam38
235390000001.438256 qam39
245470000001.738256 qam40



Downstream bonded channels

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

1Locked38.6610329372
2Locked38.6588228746
3Locked38.9688726860
4Locked38.61010822585
5Locked38.91203919624
6Locked38.91712013776
7Locked38.61992810383
8Locked38.9215909071
9Locked38.6218318239
10Locked38.9219477394
11Locked38.6208307828
12Locked38.6196148410
13Locked38.6178568503
14Locked38.9179948577
15Locked38.6176517446
16Locked38.9167447319
17Locked38.9154967436
18Locked38.9135889366
19Locked38.613500296325
20Locked38.9121027787
21Locked38.635139541
22Locked38.916709757
23Locked38.619669767
24Locked38.613449701

 

 

Time Priority Description

15/07/2024 11:41:8noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
15/07/2024 04:05:19Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
14/07/2024 20:41:12ErrorDHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
14/07/2024 04:04:59Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/07/2024 15:49:20Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/07/2024 15:49:16Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/07/2024 15:49:16criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/07/2024 15:49:15Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/07/2024 15:49:15criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
12/07/2024 12:09:57Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
12/07/2024 11:10:38criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
12/07/2024 04:49:36Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
12/07/2024 04:38:26ErrorDHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
10/07/2024 12:09:57Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
01/01/1970 00:01:45criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
10/07/2024 04:04:11Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/07/2024 17:55:10criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/07/2024 12:10:19Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/07/2024 12:05:25criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
08/07/2024 12:09:57Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
Post RS
Pre RS
slowdown
  • lakeland's avatar
    lakeland
    Tuning in
    7 months ago

    BQM link: 

    https://www.thinkbroadband.com/broadband/monitoring/quality/share/562aea8a06bb611c341bbf7974b52ddfa73893d3
  • Adduxi's avatar
    Adduxi
    Very Insightful Person
    7 months ago

    Reboot the Hub and monitor the PostRS errors, they should remain at zero on an ideal circuit.  If they build up quickly there is a fault on the line.  This will need a technician to fix. 

    In the meantime, check all the connections are at least "finger tight" and not loose, as loose connections can cause noise ingress.

  • lakeland's avatar
    lakeland
    Tuning in
    7 months ago

    Reset once again. Also noticed the box on the outside of the house was slightly open as the cable tie had snapped. A huge spider had made a lovely nest in there so brushed it all out and tightened the connections. The main cable coming in was kinked, so unkinked that. No Post RS errors but pre-RS are present but in small numbers:

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

    1Locked38.6420
    2Locked38.9100
    3Locked38.9110
    4Locked38.9110
    5Locked38.9240
    6Locked38.9290
    7Locked38.9240
    8Locked38.6230
    9Locked38.9260
    10Locked38.9250
    11Locked38.9180
    12Locked38.6260
    13Locked38.9200
    14Locked38.6140
    15Locked38.9130
    16Locked38.9370
    17Locked38.6670
    18Locked38.9750
    19Locked38.9480
    20Locked38.9390
    21Locked38.9380
    22Locked38.9450
    23Locked38.9500
    24Locked38.9600
    • Beth_G's avatar
      Beth_G
      Forum Team
      6 months ago

      Hi lakeland

      Thanks for your post, welcome to the Community Forums.

      Sorry to hear you've been experiencing a few issues with your broadband performance recently. I've had a look on this end and whilst I can see there's been a few disconnections over the past week, the connection looks quite stable. No known outages or anything affecting your connection. How've things been over the weekend after resetting?

       

  • Adduxi's avatar
    Adduxi
    Very Insightful Person
    7 months ago

    PreRS errors are nothing to worry about as they are corrected.  It's the PostRS errors you need to worry about.

  • lakeland's avatar
    lakeland
    Tuning in
    6 months ago

    Thanks for the replies everyone. I've left it for several days now and since cleaning up the box on the outside of the house, no more post RS errors and the internet hasn't dropped. Thanks for checking at your end Beth.

    • Vikki_M's avatar
      Vikki_M
      Forum Team
      6 months ago

      Hi lakeland

      Thanks for your reply, we're really happy to hear things have improved :).

      If you have any further questions, please pop back to us and we'd be happy to help.