Menu
Reply
grayfitz
  • 2
  • 0
  • 0
Joining in
270 Views
Message 1 of 5
Flag for a moderator

No Ranged Response Received and T3 Time Out

Hi all,

We've been experiencing a lot of brief dropout over the last few days on our home network. After a bit of searching I think we need to call an engineer out, but was hoping for an opinion from more knowledge people first! I confirmed through the Virgin Media network service checker (0800 561 0061) that there's no issues in the area.

Downstream bonded channels

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

1203000000-1.238256 qam9
2211000000-1.238256 qam10
3219000000-1.238256 qam11
4227000000-1.438256 qam12
5235000000-1.538256 qam13
6243000000-1.538256 qam14
7251000000-1.738256 qam15
8259000000-1.538256 qam16
9267000000-1.538256 qam17
10275000000-1.738256 qam18
11283000000-1.938256 qam19
12291000000-238256 qam20
13299000000-1.738256 qam21
14307000000-1.438256 qam22
15315000000-138256 qam23
16323000000-0.738256 qam24
17331000000-0.738256 qam25
18339000000-0.238256 qam26
19347000000-0.238256 qam27
20355000000038256 qam28
21363000000038256 qam29
22371000000038256 qam30
23379000000038256 qam31
243870000000.238256 qam32



Downstream bonded channels

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

1Locked38.9780
2Locked38.9390
3Locked38.6700
4Locked38.6730
5Locked38.9770
6Locked38.9920
7Locked38.91110
8Locked38.61010
9Locked38.9920
10Locked38.61090
11Locked38.91560
12Locked38.92330
13Locked38.62050
14Locked38.61230
15Locked38.9970
16Locked38.9840
17Locked38.6850
18Locked38.6570
19Locked38.9490
20Locked38.9700
21Locked38.9400
22Locked38.9400
23Locked38.6340
24Locked38.97495

 

0 Kudos
Reply
grayfitz
  • 2
  • 0
  • 0
Joining in
269 Views
Message 2 of 5
Flag for a moderator

Re: No Ranged Response Received and T3 Time Out

Upstream bonded channels

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

15370062549512016 qam2
23939999149512064 qam4
34620002949512032 qam3
46029955148.8512032 qam1



Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1ATDMA001260
2ATDMA0000
3ATDMA0000
4ATDMA0000

 

Network Log

Time Priority Description

24/05/2022 20:22:27criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
24/05/2022 20:18:44noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
24/05/2022 20:12:49criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
24/05/2022 20:11:1noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
24/05/2022 20:10:53criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
24/05/2022 20:10:52noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
24/05/2022 20:10:52criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
24/05/2022 20:10:50noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
24/05/2022 11:24:24criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
24/05/2022 00:44:39ErrorDHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
01/01/1970 00:01:42criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
21/05/2022 16:26:59noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
21/05/2022 05:47:34criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
20/05/2022 02:34:52ErrorDHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
19/05/2022 20:41:21Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
19/05/2022 20:41:21criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
19/05/2022 20:41:21Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
19/05/2022 20:40:36criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
19/05/2022 20:40:35Warning!RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
19/05/2022 20:40:35criticalSYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
0 Kudos
Reply
newapollo
  • 15.87K
  • 2.1K
  • 4.98K
Very Insightful Person
Very Insightful Person
232 Views
Message 3 of 5
Flag for a moderator

Re: No Ranged Response Received and T3 Time Out

The down stream is odd in showing that you have 95 post RS errors on channel 24.  There are usually more pre RS errors than post RS errors.

You seem to have a lot of T3 errors. They mean the hub has not had a response from the CMTS to its upstream ranging requests that keep everything working at the right frequency and power, often due to upstream RF noise 

I suggest that you check all your cabling, especially the white coaxial cable. Ensure it is snug and tight with no kinks, it can often work loose, especially if the other half is hoovering and moves the wires 😉

Loose wiring may also explain why the upstream modulation isn't right. They should all be 64 qam. Upstream bonded channels. Check and tighten the cables and then post your stats again, for one of the morelknowlegable members to check what the problem is and offer assistance. We have some pretty good online guru's on the forum.

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

15370062549512016 qam2
23939999149512064 qam4
34620002949512032 qam3
46029955148.8512032 qam1
Dave

I don't work for Virgin Media.

I'm a Very Insightful Person, I'm here to share knowledge. Learn more

Problem solved? Click to mark as a Helpful Answer, or use Kudos to say thanks

The do's and don'ts. Keep the community welcoming for all. Follow the house rules
The Service you do for others is the rent you pay for your room here on Earth - Muhammad Ali
Love, love and love, forever - Pele



0 Kudos
Reply
gnome
  • 59
  • 1
  • 8
Dialled in
203 Views
Message 4 of 5
Flag for a moderator

Re: No Ranged Response Received and T3 Time Out

An interesting assessment but I have no idea what it means, due to my lack of understanding.

 

Is there an easy to understand website that explains what all this stuff means, RS errors, CMTS, etc as I have often wondered what all the Downstream/Upstream figures mean, so that I can understand what is happening at my own router

0 Kudos
Reply
newapollo
  • 15.87K
  • 2.1K
  • 4.98K
Very Insightful Person
Very Insightful Person
190 Views
Message 5 of 5
Flag for a moderator

Re: No Ranged Response Received and T3 Time Out

Hi @gnome,

You should have a read of the following thread.

community.virginmedia.com/t5/Speed/Hub-status-data-understanding-network-log-messages/ 

Dave

I don't work for Virgin Media.

I'm a Very Insightful Person, I'm here to share knowledge. Learn more

Problem solved? Click to mark as a Helpful Answer, or use Kudos to say thanks

The do's and don'ts. Keep the community welcoming for all. Follow the house rules
The Service you do for others is the rent you pay for your room here on Earth - Muhammad Ali
Love, love and love, forever - Pele



0 Kudos
Reply