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Broadband Status

javedsaleem
On our wavelength

Below are my Hub 5 Stats.....lots of Pre RS Errors....what could be causing it ?

Cable Modem StatusItem Status Comments

Acquired Downstream Channel(Hz)330000000Locked
Ranged Upstream Channel(Hz)46200000Ranged
Provisioning StateOnlineOperational
1 ACCEPTED SOLUTION

Accepted Solutions

Hi javedsaleem, 

Thanks for coming back to us on this one. 

I'm sorry to hear no one has been able to explain the RS errors for you. A normal connection usually shows a steady spattering of pre-RS errors but there should only be a tiny number of post-RS errors. 

To explain this further, when the hub reboots, the first moments are quite chaotic and messy. Data is pouring in, but the modem hasn't yet synced up with the CMTS on our end. As the synchronisation is taking place, at the same time, corrupt data occurs hence the errors. 

If damaged packets of data arrive at your Hub, it will automatically try and repair them. If that's successful, the pre-RS error counter will go up. When it fails, the post-RS error counter will go up. If your post-RS error count keeps going up it's likely a sign of an issue with your connection which is why we run the checks that we do. Looking at your logs, all the packets are being repaired which is why you have a 0 post-RS error count.

When there has been an uptime of over a few days it's worth resetting the counter to 0 by rebooting the hub and then checking periodically to see if the number rises. 

I have checked all aspects of your network today and there is nothing that I am seeing I'm afraid. 

Keep us posted on if you notice the post-RS error count increasing or if you have any further issues.

Thanks,

Kath_P
Forum Team
Wishing you & your family a very Merry Christmas and a Happy New Year

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javedsaleem
On our wavelength

Downstream bonded channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
1330000000-1.741QAM 25625
21380000000.642QAM 2561
31460000000.642QAM 2562
41540000000.642QAM 2563
51620000000.542QAM 2564
61700000000.442QAM 2565
71780000000.242QAM 2566
81860000000.142QAM 2567
91940000000.142QAM 2568
10202000000042QAM 2569
112100000000.142QAM 25610
12218000000042QAM 25611
132260000000.241QAM 25612
142340000000.541QAM 25613
152420000000.741QAM 25614
162500000000.841QAM 25615
172580000000.841QAM 25616
182660000000.741QAM 25617
192740000000.841QAM 25618
202820000000.941QAM 25619
212900000000.941QAM 25620
22298000000-1.141QAM 25621
23306000000-1.341QAM 25622
24314000000-1.241QAM 25623
25322000000-1.541QAM 25624
26338000000-1.740QAM 25626
27346000000-1.840QAM 25627
28354000000-1.940QAM 25628
29362000000-1.841QAM 25629
30370000000-1.840QAM 25630
31378000000-1.740QAM 25631

Downstream bonded channels

Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors
1Locked4190
2Locked421000
3Locked421760
4Locked422220
5Locked421780
6Locked424000
7Locked422060
8Locked421770
9Locked42610
10Locked42260
11Locked42580
12Locked42400
13Locked41130
14Locked4120
15Locked41220
16Locked41360
17Locked41230
18Locked4160
19Locked41220
20Locked4180
21Locked41210
22Locked41350
23Locked4130
24Locked41130
25Locked4170
26Locked4030
27Locked40210
28Locked40290
29Locked41100
30Locked40140
31Locked40330

Upstream bonded channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
04620000034.35120QAM 641
13940000034.85120QAM 642
23260000034.35120QAM 643
32580000033.85120QAM 644

Upstream bonded channels

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

General Configuration

Network accessMaximum Number of CPEsBaseline PrivacyDOCSIS ModeConfig file
Allowed
1
Enabled
3.1
69834ncxv9873254k;fg87dsf

Primary Downstream Service Flow

SFIDMax Traffic RateMax Traffic BurstMin Traffic Rate
3938
1200000450 bps
42600bytes
0 bps

Primary Upstream Service Flow

SFIDMax Traffic RateMax Traffic BurstMin Traffic RateMax Concatenated BurstScheduling Type
3937
55000270 bps
42600bytes
0 bps
16320bytes
Best Effort

Network Log

Time Priority Description
03-01-2023 05:54:45errorDHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
31-12-2022 23:27:07noticeREGISTRATION COMPLETE - Waiting for Operational status
31-12-2022 23:27:01warningREG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
31-12-2022 23:26:55noticeDS 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;
31-12-2022 23:26:43warningDHCP WARNING - Non-critical field invalid in response ;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
31-12-2022 23:26:41noticeHonoring MDD; IP provisioning mode = IPv4
31-12-2022 23:26:32criticalSYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
31-12-2022 23:26:21criticalCable Modem Reboot due to power button reset
31-12-2022 01:04:43criticalStarted Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
29-12-2022 08:16:09criticalSYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
29-12-2022 08:15:57criticalCable Modem reset to Factory Default via reset button

1000003815.jpg

The Cable from outside, to the Hub 5, is from the days of ntl.....maybe that needs renewing ?

 

Hi Javed,

Thank you for reaching  back out to us, sorry to see you have been seeing lots of errors on the Router logs, I was able to locate you on our system with the details we have for you and cannot see any issues at all, can you check all internal connections are hand tight, this includes all equipment plus and splitters powered and standard, once done please let us know if things improve.

Regards

Paul.

Some more stats.....

Lots of rs errors

ownstream bonded channels

Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors
1Locked4112117
2Locked4253231
3Locked423295
4Locked421591
5Locked4256522
6Locked4218258
7Locked4217609
8Locked42199316
9Locked4261423
10Locked4216211
11Locked4257116
12Locked424141
13Locked412278
14Locked417913
15Locked416915
16Locked4121317
17Locked4117513
18Locked4115316
19Locked4129617
20Locked4111619
21Locked4132920
22Locked4168826
23Locked4125920
24Locked4153919
25Locked4112715
26Locked3930313
27Locked4052415
28Locked4045615
29Locked4015913
30Locked4022214
31Locked402530