Menu
Reply
Highlighted
  • 117
  • 2
  • 14
Dialled in
133 Views
Message 1 of 14
Flag for a moderator

Partial Service / Lost MDD / No Ranging response / etc

Hi, 

So have now had connection going on for 3 years and once initial 3 months fighting to get correct Docsis config applied service has been standard affair of sometimes good other times not so good. 

Constantly could see "No Ranging response", "DHCP rebind warning", "SYNC timing syncronisation failure" etc...but was previously told these are normal and service on the whole wasn't too bad. Recently the service has been poor with lots of dropouts, vpn / direct access connection getting reset for work access and in the last 2 weeks very poor when trying to view Youtube quiz (virtual pub quiz) and use online meeting apps to compete against family members...again this was ok but not brilliant before. 

Having reviewed posts on this forum, i can see there are possibly some issues with my connection including physical cabling between property and Virgin core network. 

I have checked cables connected to Hub, and have 2 attenuaters fitted (6dbs & 3dbs). Issue affects wired and wireless with network speed reaching as low as 0.3Mbps rather than the 108Mbps expected.

 

0 Kudos
Reply
Highlighted
  • 117
  • 2
  • 14
Dialled in
132 Views
Message 2 of 14
Flag for a moderator

Re: Partial Service / Lost MDD / No Ranging response / etc

From Network Status on Hub...

Cable Modem StatusItem Status Comments

Acquired Downstream Channel (Hz)
299000000
Locked
Ranged Upstream Channel (Hz)
32600000
Locked
Provisioning State
Online
 

 

Downstream bonded channels

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

1299000000-0.238256 qam21
21390000000.738256 qam1
3147000000037256 qam2
41550000000.737256 qam3
51630000000.738256 qam4
61710000000.738256 qam5
71790000000.538256 qam6
81870000000.738256 qam7
9195000000138256 qam8
102030000000.738256 qam9
112110000000.538256 qam10
122190000000.224256 qam11
132270000000.436256 qam12
142350000000.238256 qam13
152430000000.238256 qam14
162510000000.238256 qam15
17259000000038256 qam16
18267000000-0.438256 qam17
19275000000-0.738256 qam18
20283000000-0.438256 qam19
21291000000-0.438256 qam20
223070000000.438256 qam22
233150000001.238256 qam23
243230000001.738256 qam24


Downstream bonded channels

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

1Locked38.938175
2Locked38.6338459
3Locked37.3320297
4Locked37.6671348
5Locked38.6243396
6Locked38.6197325
7Locked38.6155699
8Locked38.9133319
9Locked38.990460
10Locked38.969269
11Locked38.678556
12Locked24.98322792942041092
13Locked36.3132231
14Locked38.964236
15Locked38.650324
16Locked38.662309
17Locked38.953299
18Locked38.655291
19Locked38.648212
20Locked38.962211
21Locked38.955207
22Locked38.943180
23Locked38.935274
24Locked38.936269

 

0 Kudos
Reply
Highlighted
  • 117
  • 2
  • 14
Dialled in
131 Views
Message 3 of 14
Flag for a moderator

Re: Partial Service / Lost MDD / No Ranging response / etc

 

Upstream bonded channels

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

13260000049.5512064 qam5
23940000048.5512064 qam4
34620000049.5512064 qam3
45370000051512064 qam2


Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1ATDMA0060
2ATDMA0040
3ATDMA0010
4ATDMA0030

 

General Configuration

Network access
Allowed
Maximum Number of CPEs
1
Baseline Privacy
Enabled
DOCSIS Mode
Docsis30
Config file
.iyewrkldJKDHSUBsgvca69834ncx


Primary Downstream Service Flow

SFID24021
Max Traffic Rate117000047
Max Traffic Burst42600
Min Traffic Rate0


Primary Upstream Service Flow

SFID24020
Max Traffic Rate10500047
Max Traffic Burst16320
Min Traffic Rate0
Max Concatenated Burst16320
Scheduling TypeBestEffort

 

Network Log

Time Priority Description

26/10/2020 10:55:42Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/10/2020 10:55:42Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/10/2020 10:55:25Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/10/2020 10:55:24Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/10/2020 10:55:15Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/10/2020 10:55:15Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/10/2020 10:55:6Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/10/2020 10:55:5Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/10/2020 10:54:51Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/10/2020 10:54:50Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/10/2020 10:54:17Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/10/2020 10:54:16Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/10/2020 10:51:48Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/10/2020 10:51:47Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/10/2020 10:50:20Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/10/2020 10:50:18Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**b;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/10/2020 10:50:6Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/10/2020 10:50:6noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/10/2020 10:49:35Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/10/2020 10:49:34Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

 

Regards

Dave

0 Kudos
Reply
Highlighted
  • 6.33K
  • 464
  • 1.1K
Hero
103 Views
Message 4 of 14
Flag for a moderator

Re: Partial Service / Lost MDD / No Ranging response / etc

Can we try an experiment. Power off your hub, remove the 3dBs attenuator, recheck that all cable connections between the hub and wall socket are tight and power on the hub. Repost your stats and logs.

--
Hub 3.0, TP-Link Archer C8, TP-Link TL-SG1008D 8-port gigabit switch, V6
My Broadband Ping - Roger's VM Broadband Connection
0 Kudos
Reply
Highlighted
  • 117
  • 2
  • 14
Dialled in
91 Views
Message 5 of 14
Flag for a moderator

Re: Partial Service / Lost MDD / No Ranging response / etc

Hi Roger, details below with 3dbs one removed...

Cable Modem StatusItem Status Comments

Acquired Downstream Channel (Hz)
299000000
Locked
Ranged Upstream Channel (Hz)
60299966
Locked
Provisioning State
Online

 

Downstream bonded channels

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

12990000003.738256 qam21
21390000006.138256 qam1
31470000004.837256 qam2
41550000005.637256 qam3
51630000005.838256 qam4
61710000005.438256 qam5
71790000005.438256 qam6
81870000005.438256 qam7
91950000005.638256 qam8
102030000005.538256 qam9
112110000005.138256 qam10
122270000004.535256 qam12
132350000004.338256 qam13
142430000004.138256 qam14
152510000004.538256 qam15
16259000000438256 qam16
172670000003.238256 qam17
182750000003.238256 qam18
192830000003.738256 qam19
202910000003.938256 qam20
213070000003.738256 qam22
22315000000538256 qam23
233230000005.540256 qam24



Downstream bonded channels

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

1Locked38.610
2Locked38.910
3Locked38.9172
4Locked37.3100
5Locked37.3100
6Locked38.650
7Locked38.6240
8Locked38.900
9Locked38.970
10Locked38.950
11Locked38.950
12Locked38.660
13Locked35.5390
14Locked38.600
15Locked38.900
16Locked38.950
17Locked38.950
18Locked38.900
19Locked38.600
20Locked38.950
21Locked38.9110
22Locked38.900
23Locked38.650
0 Kudos
Reply
Highlighted
  • 117
  • 2
  • 14
Dialled in
89 Views
Message 6 of 14
Flag for a moderator

Re: Partial Service / Lost MDD / No Ranging response / etc

Upstream bonded channels

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

16029996645.5512064 qam1
23260001745.5512064 qam5
33939999845.5512064 qam4
44620002645.5512064 qam3
55370002645.5512064 qam2


Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1ATDMA0000
2ATDMA0000
3ATDMA0000
4ATDMA0000
5ATDMA0000

General Configuration

Network access
Allowed
Maximum Number of CPEs
1
Baseline Privacy
Enabled
DOCSIS Mode
Docsis30
Config file
ldJKDHSUBsgvca69834ncxv987325



Primary Downstream Service Flow

SFID24021
Max Traffic Rate117000047
Max Traffic Burst42600
Min Traffic Rate0



Primary Upstream Service Flow

SFID24020
Max Traffic Rate10500047
Max Traffic Burst16320
Min Traffic Rate0
Max Concatenated Burst16320
Scheduling TypeBestEffort
0 Kudos
Reply
Highlighted
  • 117
  • 2
  • 14
Dialled in
85 Views
Message 7 of 14
Flag for a moderator

Re: Partial Service / Lost MDD / No Ranging response / etc

Sample of Network Log

Time Priority Description
26/10/2020 16:00:22Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/10/2020 16:00:22Warning!Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/10/2020 15:15:19Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
26/10/2020 15:15:19criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=v;CM-QOS=1.1;CM-VER=3.0;
26/10/2020 15:15:19criticalUnicast Ranging Received Abort Response - initializing MAC;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
0 Kudos
Reply
Highlighted
  • 6.33K
  • 464
  • 1.1K
Hero
80 Views
Message 8 of 14
Flag for a moderator

Re: Partial Service / Lost MDD / No Ranging response / etc

The problematic downstream channel 12 is now OK. All downstream channel power levels are up, higher than I expected but within tolerance. Curiously you now have five rather than the previous four upstream channels but their power levels are a bit lower (good). I suggest that leave things the way they are and come back if you have a problem again.

--
Hub 3.0, TP-Link Archer C8, TP-Link TL-SG1008D 8-port gigabit switch, V6
My Broadband Ping - Roger's VM Broadband Connection
Highlighted
  • 117
  • 2
  • 14
Dialled in
77 Views
Message 9 of 14
Flag for a moderator

Re: Partial Service / Lost MDD / No Ranging response / etc

I take it the Network log warnings / critical logs are just from refreshing router...and will now disappear (most of the time)?

 

 

0 Kudos
Reply
Highlighted
  • 6.33K
  • 464
  • 1.1K
Hero
43 Views
Message 10 of 14
Flag for a moderator

Re: Partial Service / Lost MDD / No Ranging response / etc

The logs are produced on an ongoing basis. There are always some errors but most are of no consequence.

--
Hub 3.0, TP-Link Archer C8, TP-Link TL-SG1008D 8-port gigabit switch, V6
My Broadband Ping - Roger's VM Broadband Connection
0 Kudos
Reply