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gcblewden
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No Ranging Response received - T3 time-out

on ‎22-01-2021 10:00

My broadband has been suffering intermittent losses for several weeks. I have checked that there are no known network issues, have done all the necessary cable checks and rebooted the router many times. Referring to my router logs, I have discovered that they contain many “No Ranging Response received - T3 time-out” entries.

Is this a router problem or a WAN issue?

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gary_dexter
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Re: No Ranging Response received - T3 time-out

on ‎22-01-2021 10:35

Post the Network, Upstream and Downstream logs from the hubs admin pages back here as text 


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gcblewden
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Re: No Ranging Response received - T3 time-out

on ‎22-01-2021 10:47

As requested, here are the logs. Thanks.

Network Log

22/01/202110:38:42 GMT66050310Auth Success - Web login successful.
22/01/202109:48:32 GMT66050310Auth Success - Web login successful.
22/01/202109:48:11 GMT66050310Auth Success - Web login successful.
22/01/202107:56:34 GMT66050310Auth Success - Web login successful.
22/01/202107:51:14 GMT68010302DHCP WAN IP - 80.2.115.179
22/01/202107:50:10 GMT68000407TOD established
Time Not EstablishedTime Not Established82000200No Ranging Response received - T3 time-out
Time Not EstablishedTime Not Established84000510Downstream Locked Successfully
21/01/202121:30:16 GMT68010302DHCP WAN IP - 80.2.115.179
21/01/202121:29:23 GMT82000200No Ranging Response received - T3 time-out
21/01/202121:29:15 GMT68000407TOD established
Time Not EstablishedTime Not Established82000200No Ranging Response received - T3 time-out
Time Not EstablishedTime Not Established84000510Downstream Locked Successfully
21/01/202117:38:34 GMT68010302DHCP WAN IP - 80.2.115.179
21/01/202117:37:42 GMT68000407TOD established
21/01/202117:37:29 GMT84000510Downstream Locked Successfully
21/01/202117:37:22 GMT82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
21/01/202117:36:53 GMT82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
21/01/202117:36:24 GMT82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out
21/01/202117:35:49 GMT82000400Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out

 

Downstream ChannelsLock Status Channel ID Frequency Modulation Rx Power RxMER Pre RS Errors Post RS Errors

Locked1139000000 Hz256 QAM13.3 dBmV 37.4 dB1777310
Locked2147000000 Hz256 QAM13.4 dBmV 37.6 dB1004285
Locked3155000000 Hz256 QAM13.2 dBmV 37.6 dB349295
Locked4163000000 Hz256 QAM12.9 dBmV 37.4 dB314299
Locked5171000000 Hz256 QAM13.0 dBmV 37.9 dB277276
Locked6179000000 Hz256 QAM12.7 dBmV 37.9 dB292285
Locked7187000000 Hz256 QAM13.1 dBmV 37.6 dB308307
Locked8195000000 Hz256 QAM12.6 dBmV 37.6 dB340338

 

Upstream ChannelsLock Status Channel ID Frequency Modulation Tx Power Mode Channel Bandwidth Symbol Rate

Locked160300000 HzATDMA49.8 dBmV64QAM6400000 Hz5120 Ksym/sec
Locked439400000 HzATDMA49.3 dBmV64QAM6400000 Hz5120 Ksym/sec
Locked346200000 HzATDMA49.3 dBmV64QAM6400000 Hz5120 Ksym/sec
Locked253700000 HzATDMA49.8 dBmV64QAM6400000 Hz5120 Ksym/sec

 

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gary_dexter
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Re: No Ranging Response received - T3 time-out

on ‎22-01-2021 14:30

Your downstream levels are too high.

Unless there's an area issue you'll need an engineer

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gcblewden
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Re: No Ranging Response received - T3 time-out

on ‎23-01-2021 13:06

Many thanks for the help.

I have booked an engineer.

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gcblewden
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Re: No Ranging Response received - T3 time-out

3 weeks ago

An engineer came on 26 Jan and adjusted downstream levels, but the problem still exists.

Usually, if there is loss of internet, I would still be able to see local devices, including the router. However, that is not the case. I get random loss of internet together with simultaneous loss of connectivity on my LAN and WiFi. This would lead me to believe that the router is failing.

I am booking another engineer appointment but, for reference here are the logs:

NETWORK

Date Time Error Number Error Description

04/02/202107:15:19 GMT66050310Auth Success - Web login successful.
04/02/202106:37:45 GMT68010302DHCP WAN IP - 80.2.115.179
04/02/202106:36:45 GMT68000407TOD established
Time Not EstablishedTime Not Established82000200No Ranging Response received - T3 time-out
Time Not EstablishedTime Not Established84000510Downstream Locked Successfully
04/02/202106:30:55 GMT66050310Auth Success - Web login successful.
04/02/202106:22:26 GMT68010302DHCP WAN IP - 80.2.115.179
04/02/202106:21:27 GMT68000407TOD established
Time Not EstablishedTime Not Established82000200No Ranging Response received - T3 time-out
Time Not EstablishedTime Not Established84000510Downstream Locked Successfully
04/02/202106:16:12 GMT68010302DHCP WAN IP - 80.2.115.179
04/02/202106:15:10 GMT68000407TOD established
Time Not EstablishedTime Not Established82000200No Ranging Response received - T3 time-out
Time Not EstablishedTime Not Established84000510Downstream Locked Successfully
04/02/202105:15:50 GMT68010302DHCP WAN IP - 80.2.115.179
04/02/202105:14:48 GMT68000407TOD established
Time Not EstablishedTime Not Established82000200No Ranging Response received - T3 time-out
Time Not EstablishedTime Not Established84000510Downstream Locked Successfully
04/02/202100:15:21 GMT66050310Auth Success - Web login successful.
03/02/202123:43:27 GMT68010302

DHCP WAN IP - 80.2.115.179

 

Downstream ChannelsLock Status Channel ID Frequency Modulation Rx Power RxMER Pre RS Errors Post RS Errors

Locked1139000000 Hz256 QAM7.0 dBmV 37.6 dB656290
Locked2147000000 Hz256 QAM7.1 dBmV 37.9 dB472284
Locked3155000000 Hz256 QAM6.8 dBmV 37.4 dB326306
Locked4163000000 Hz256 QAM6.5 dBmV 37.9 dB279278
Locked5171000000 Hz256 QAM6.5 dBmV 37.9 dB312304
Locked6179000000 Hz256 QAM6.4 dBmV 37.9 dB280280
Locked7187000000 Hz256 QAM6.8 dBmV 37.9 dB310310
Locked8195000000 Hz256 QAM6.2 dBmV 37.9 dB315314

 

Upstream ChannelsLock Status Channel ID Frequency Modulation Tx Power Mode Channel Bandwidth Symbol Rate

Locked160300000 HzATDMA50.3 dBmV64QAM6400000 Hz5120 Ksym/sec
Locked439400000 HzATDMA49.3 dBmV64QAM6400000 Hz5120 Ksym/sec
Locked346200000 HzATDMA49.3 dBmV64QAM6400000 Hz5120 Ksym/sec
Locked253700000 HzATDMA50.0 dBmV64QAM6400000 Hz5120 Ksym/sec
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bobajob
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Re: No Ranging Response received - T3 time-out

a week ago

I seem to have the same problem, and am awaiting an engineer.

Was your issue resolved and if so how?

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gcblewden
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Re: No Ranging Response received - T3 time-out

a week ago

A second engineer called. She checked and renewed all the connections between the street cabinet and the house. She also installed another router. However, the problem still exists, to a lesser extent, and I have now registered a complaint. I think that there may be a wider network problem as well.

Good luck!

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bobajob
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Re: No Ranging Response received - T3 time-out

a week ago

Thanks for letting me know.

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