Menu
Reply
  • 4
  • 0
  • 0
Lexsed
Tuning in
20,078 Views
Message 1 of 38
Flag for a moderator

No Ranging Response received - T3 time-out

Hi,

Got this going on for the last month or so, frequent drops, while short, are extremely annoying and frequent. Tried all the troubleshooting I could find here, as well as from 3rd party sources, but no dice, it comes back and goes away randomly

Here are the logs which I assume can help determine the issue:

Date Time Error Number Error Description

08/05/201718:35:04 GMT82000200No Ranging Response received - T3 time-out
08/05/201718:35:02 GMT82000200No Ranging Response received - T3 time-out
08/05/201718:33:43 GMT66050310Auth Success - Web login successful.
08/05/201718:31:26 GMT82000200No Ranging Response received - T3 time-out
08/05/201718:31:00 GMT82000200No Ranging Response received - T3 time-out
08/05/201718:30:59 GMT82000200No Ranging Response received - T3 time-out
08/05/201718:28:35 GMT82000200No Ranging Response received - T3 time-out
08/05/201718:28:09 GMT82000200No Ranging Response received - T3 time-out
08/05/201718:21:56 GMT82000200No Ranging Response received - T3 time-out
08/05/201718:21:55 GMT82000200No Ranging Response received - T3 time-out
08/05/201718:15:53 GMT82000200No Ranging Response received - T3 time-out
08/05/201718:15:45 GMT82000200No Ranging Response received - T3 time-out
08/05/201718:10:56 GMT82000200No Ranging Response received - T3 time-out
08/05/201718:10:40 GMT82000200No Ranging Response received - T3 time-out
08/05/201718:10:10 GMT84020200Lost MDD Timeout
08/05/201718:08:41 GMT82000200No Ranging Response received - T3 time-out
08/05/201718:08:06 GMT82000200No Ranging Response received - T3 time-out
08/05/201718:07:51 GMT82000200No Ranging Response received - T3 time-out
08/05/201718:07:50 GMT82000200No Ranging Response received - T3 time-out
08/05/201718:07:46 GMT82000200No Ranging Response received - T3 time-out

 

Downstream Channels

Lock StatusChannel IDFrequencyModulationRx PowerRxMERPre RS ErrorsPost RS ErrorsLocked1171000000 Hz256 QAM-5.6 dBmV 37.1 dB994843745736Locked2179000000 Hz256 QAM-5.7 dBmV 37.6 dB955494700219Locked3187000000 Hz256 QAM-5.6 dBmV 37.6 dB1090159729393Locked4195000000 Hz256 QAM-5.6 dBmV 37.1 dB1309304915025Locked5203000000 Hz256 QAM-5.7 dBmV 37.4 dB1196401796995Locked6211000000 Hz256 QAM-5.9 dBmV 37.4 dB841841575510Locked7219000000 Hz256 QAM-6.0 dBmV 37.4 dB775186506153Locked8227000000 Hz256 QAM-6.0 dBmV 37.6 dB778429499077

Upstream Channels

Lock StatusChannel IDFrequencyModulationTx PowerModeChannel BandwidthSymbol RateLocked7439400000 HzATDMA48.3 dBmV16QAM6400000 Hz5120 Ksym/secNotLocked00 Hz 0 dBmV  0 Ksym/secNotLocked00 Hz 0 dBmV  0 Ksym/secLocked7625800000 HzATDMA46.8 dBmV16QAM6400000 Hz5120 Ksym/sec

0 Kudos
Reply
  • 3.5K
  • 286
  • 1.02K
Dave_cq
Wise owl
20,071 Views
Message 2 of 38
Flag for a moderator

Re: No Ranging Response received - T3 time-out

Downstream power levels are right at the lower limit of the acceptable range whilst Signal to Noise Ratio appears to be ok ... BUT ... I also notice that both your Upstream channels are on 16QAM instead of the expected 64QAM which may well indicate a noisy connection.   Arranging an engineer's visit to put you on a higher power tapping point in the street cabinet may be a solution.

 

 

 

 

********* SuperHub 2ac - Asus rt-ac68u Router - Vivid 100Mbps **********

Electron
  • 4
  • 0
  • 0
Lexsed
Tuning in
20,062 Views
Message 3 of 38
Flag for a moderator

Re: No Ranging Response received - T3 time-out

Alright I see. Would calling be the solution then, or waiting for a response here, to avoid explaining the issue again without the convenience of clearly presented logs?
0 Kudos
Reply
  • 2.47K
  • 231
  • 620
Superuser
Superuser
20,054 Views
Message 4 of 38
Flag for a moderator

Re: No Ranging Response received - T3 time-out

Forum staff will get to you but it can take up to week.

Dave.

Dave

"The late great Douglas Adams: A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools."
0 Kudos
Reply
  • 11.7K
  • 347
  • 677
Forum Team (Retired) Samantha_L
Forum Team (Retired)
24,986 Views
Message 5 of 38
Flag for a moderator
Helpful Answer

Re: No Ranging Response received - T3 time-out

Hi Lexsed,

 

Welcome to the community and thanks for posting.

 

I'm sorry to read you are experiencing intermittent broadband connection. I can imagine how annoying this must be.

 

Looking at your connection, the downstream power levels are on the low side as Dave_cq mentioned. There is also a high amount of T3 time-outs reported within a short space of time. As there are no issues on the network I would like to book an engineer to check this over. I've sent you a PM (purple envelope icon, right corner) with some details for you to confirm please.

 

Hope to hear from you soon

Sam


New around here? To find out more about the Community check out our Getting Started guide


  • 39
  • 1
  • 2
hamtrektng
On our wavelength
14,723 Views
Message 6 of 38
Flag for a moderator

Re: No Ranging Response received - T3 time-out

Recently been getting on mine too.

Note in log:

T3 Timeout errors: 35

DownloadStream Power is above 2.0dbmV
Downstream Channel ID: 9

Upstream Power is above 50.0dbmV (as of 10.14am)
Upstream Channel ID: 79

Any ideas?

0 Kudos
Reply
  • 39
  • 1
  • 2
hamtrektng
On our wavelength
14,387 Views
Message 7 of 38
Flag for a moderator

Re: No Ranging Response received - T3 time-out

As of today, the issue has been resolved. Will monitor for a few more days for further critical errors.
0 Kudos
Reply
  • 12.75K
  • 398
  • 728
Forum Team (Retired) Heather_J
Forum Team (Retired)
14,249 Views
Message 8 of 38
Flag for a moderator

Re: No Ranging Response received - T3 time-out

Hello hamtrektng, 

Thanks for the update Smiley Happy

Good to hear you've noticed an improvement. 

Let us know if you need help with anything else at the moment. 

Take care.

Heather_J

Tech fan? Have you read our Digital life blog yet? Check it out


0 Kudos
Reply
  • 1.64K
  • 92
  • 299
Adduxi
Super solver
14,248 Views
Message 9 of 38
Flag for a moderator

Re: No Ranging Response received - T3 time-out


@Dave_cqwrote:

Downstream power levels are right at the lower limit of the acceptable range whilst Signal to Noise Ratio appears to be ok ... BUT ... I also notice that both your Upstream channels are on 16QAM instead of the expected 64QAM which may well indicate a noisy connection.   Arranging an engineer's visit to put you on a higher power tapping point in the street cabinet may be a solution.

 


I've been on 16QAM for as long as I can remember without issue. 

Yes, it can indicate a problem if you dropped from 64 to 16, however being on 16 already, it's not always the case.  

0 Kudos
Reply
  • 1
  • 0
  • 0
pc2018
Joining in
12,949 Views
Message 10 of 38
Flag for a moderator

Re: No Ranging Response received - T3 time-out

 

Hi,

 

I am getting the same problem , connection drops off , then comes back on 5-10 minutes later , logs are below

Date And Time Error Number Event Description

2018-05-20 10:47:34.0084000700RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
2018-05-20 10:47:38.0082000200No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
2018-05-20 10:47:38.0084000700RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
2018-05-20 10:47:49.0084020200Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
2018-05-20 11:13:33.0082000200No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
2018-05-20 11:14:52.0082000300Ranging Request Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
2018-05-20 11:14:52.0082000600Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
2018-05-20 11:15:16.0082000200No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
2018-05-20 11:47:25.0082000300Ranging Request Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
2018-05-20 11:47:25.0082000600Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
2018-05-20 11:47:49.0082000200No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
2018-05-20 12:10:08.0084000700RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
2018-05-20 12:35:29.0082000200No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
2018-05-20 12:43:45.0084000700RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
2018-05-20 13:40:13.0082000200No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
2018-05-20 19:01:00.0084020200Lost MDD Timeout;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
2018-05-20 20:17:14.0084000700RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
2018-05-20 21:34:33.0082000200No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
2018-05-20 21:38:51.0082000400Received 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;
2018-05-20 21:39:41.0082000200No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

 

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

12990000002.737.6256 qam21
23230000001.537.3256 qam24
33150000002.238.6256 qam23
43070000002.538.6256 qam22
52910000002.937.6256 qam20
6283000000338.6256 qam19
72750000003.238.9256 qam18
82670000003.238.6256 qam17
92590000003.738.6256 qam16
102510000003.538.6256 qam15
11243000000438.6256 qam14
12235000000438.6256 qam13
132270000004.337.6256 qam12
142190000004.438.6256 qam11
152110000004.938.6256 qam10
162030000004.638.9256 qam9
17195000000538.6256 qam8
181870000005.538.9256 qam7
191790000005.338.6256 qam6
201710000005.638.6256 qam5
211630000005.638.9256 qam4
221550000005.637.6256 qam3
231470000005.837.6256 qam2
241390000006.137.6256 qam1

 

Upstream bonded channelsChannel ID Frequency(Hz) Mode Power(dBmV) Modulation Channel Bandwidth(Hz) Symbol Rate (ksps)

5124400000ATDMA46.516 qam64000005120
4937600000ATDMA46.516 qam64000005120
0 Kudos
Reply