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wdmullen
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Intermittent Broadband - No Ranging Response received

I get dropped packets from a wired connection generally after 3pm every day.  It's a real nightmare as most of us I need to do video calls - and the connection is virtually unusable. The lost packets correlate with critical errors I'm getting on the Hub, i.e "No Ranging Response received". I run network tests and everything is fine. I've call VM before and told to do a Factory Reset which I've done, but didn't fix it...

Time

Priority

Description

01/01/1970 00:01:36

critical

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

03/07/2021 20:57:27

Warning!

RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

03/07/2021 20:57:27

critical

SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

02/07/2021 08:11:54

critical

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

02/07/2021 01:17:14

Error

DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

29/06/2021 22:53:20

critical

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

28/06/2021 13:17:14

Error

DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

25/06/2021 13:53:13

critical

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

25/06/2021 12:31:8

Error

DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

21/06/2021 13:17:25

critical

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

21/06/2021 01:03:20

Error

DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

18/06/2021 04:37:15

critical

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

18/06/2021 00:34:1

critical

Received 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;

18/06/2021 00:31:47

Warning!

Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

18/06/2021 00:31:42

critical

SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

18/06/2021 00:31:41

Warning!

RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

18/06/2021 00:31:41

critical

SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

18/06/2021 00:31:41

Warning!

RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

15/06/2021 17:55:31

critical

No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

15/06/2021 02:00:51

Warning!

RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

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Adduxi
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Message 2 of 14
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Re: Intermittent Broadband - No Ranging Response received

Please post your power levels, network log and Pre and PostRS errors.   Also setup a BQM here www.thinkbroadband.com/ping

Once done we can comment on your circuit.

I'm a Very Insightful Person, I'm here to share knowledge, I don't work for Virgin Media. Learn more

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wdmullen
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Message 3 of 14
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Re: Intermittent Broadband - No Ranging Response received

Many thanks   Downstream bonded channels

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

1139000000-11.535256 qam1
2147000000-11.736256 qam2
3155000000-11.736256 qam3
4163000000-11.536256 qam4
5171000000-11.236256 qam5
6179000000-11.236256 qam6
7187000000-10.936256 qam7
8195000000-1136256 qam8
9203000000-11.236256 qam9
10211000000-11.436256 qam10
11219000000-11.536256 qam11
12227000000-11.536256 qam12
13235000000-11.736256 qam13
14243000000-1236256 qam14
15251000000-12.236256 qam15
16259000000-12.236256 qam16
17267000000-1236256 qam17
18275000000-1236256 qam18
19283000000-1236256 qam19
20291000000-1236256 qam20
21299000000-1235256 qam21
22307000000-1236256 qam22
23315000000-1235256 qam23
24323000000-1235256 qam24



Downstream bonded channels

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

1Locked35.78500
2Locked36.37190
3Locked36.62700
4Locked36.61750
5Locked36.31980
6Locked36.31770
7Locked36.61310
8Locked36.6550
9Locked36.31200
10Locked36.31050
11Locked36.61160
12Locked36.33520
13Locked36.62220
14Locked36.33840
15Locked36.65050
16Locked36.35930
17Locked36.35180
18Locked36.63040
19Locked36.31860
20Locked36.36020
21Locked35.714960
22Locked36.64660
23Locked35.711020
24Locked35.710490
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wdmullen
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Re: Intermittent Broadband - No Ranging Response received

Network Log

Time Priority Description

01/01/1970 00:01:36criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
03/07/2021 20:57:27Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
03/07/2021 20:57:27criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/07/2021 08:11:54criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
02/07/2021 01:17:14ErrorDHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
29/06/2021 22:53:20criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
28/06/2021 13:17:14ErrorDHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
25/06/2021 13:53:13criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
25/06/2021 12:31:8ErrorDHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
21/06/2021 13:17:25criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
21/06/2021 01:03:20ErrorDHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
18/06/2021 04:37:15criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
18/06/2021 00:34:1criticalReceived 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;
18/06/2021 00:31:47Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
18/06/2021 00:31:42criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
18/06/2021 00:31:41Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
18/06/2021 00:31:41criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
18/06/2021 00:31:41Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
15/06/2021 17:55:31criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
15/06/2021 02:00:51Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
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wdmullen
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Message 5 of 14
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Re: Intermittent Broadband - No Ranging Response received

General Configuration

Network access
Allowed
Maximum Number of CPEs
1
Baseline Privacy
Enabled
DOCSIS Mode
Docsis30
Config file
cmreg-vmdg505-bbt060+voc-b.cm



Primary Downstream Service Flow

SFID8178
Max Traffic Rate230000061
Max Traffic Burst42600
Min Traffic Rate0



Primary Upstream Service Flow

SFID8177
Max Traffic Rate22000061
Max Traffic Burst42600
Min Traffic Rate0
Max Concatenated Burst42600
Scheduling TypeBestEffort
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wdmullen
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Message 6 of 14
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Re: Intermittent Broadband - No Ranging Response received

BQM to follow in 24 hours.

HUGE THANKS for your help.

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jbrennand
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Message 7 of 14
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Re: Intermittent Broadband - No Ranging Response received

Down power levels are way too low. may need a Tech visit to rectify

Minimum should be -6dBmV. Is there an attenuator on the coax cable - if so try removing it and see what happens.

--------------------
John
--------------------

I do not work for VM. My services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired 2 WiFi,) SH2 in modem mode with Airport Extreme Router +2 Airport Express's. On VIVID200, Talk Anytime Phone, x2 Mobile SIM only iPhones.
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wdmullen
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Message 8 of 14
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Re: Intermittent Broadband - No Ranging Response received

Thank you for suggestion. There's a lot to unplumb to get to the attenuator, so I'll provide the BQM in the first instance, and then hoping that VM engineer will intervene! Many thanks again, Will.

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wdmullen
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Message 9 of 14
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Re: Intermittent Broadband - No Ranging Response received

BQMScreenshot 2021-07-07 at 13.49.50.png

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lotharmat
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Message 10 of 14
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Re: Intermittent Broadband - No Ranging Response received

Can you post a link to the Live BQM?

CLick 'SHare Live Graph' (under the graph)

Then paste the 'Direct Link' into here!



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Hub 3 - Modem Mode - TP-Link Archer C7