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Multiple outages. 'No Ranging Response Received - T3 Timeout.'

We've had issue with power levels in the past - I was wondering if anyone could tell me if this means I should call VM for an engineer to change the power levels again, or if it's another issue. 

Here's the logs from the Hub (used in modem mode)

 

Network Log
Time Priority Description
15/11/2020 18:39:0 notice LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
15/11/2020 18:38:50 Warning! LAN login FAILED : Incorrect Username / Password / ConnectionType;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
15/11/2020 18:34:19 critical No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
15/11/2020 18:33:40 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;
15/11/2020 18:29:22 critical No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
15/11/2020 18:26:4 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;
15/11/2020 18:22:3 critical SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
15/11/2020 18:21:40 Warning! RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
15/11/2020 18:18:53 critical No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
15/11/2020 18:18:52 critical Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
15/11/2020 18:18:52 critical Ranging Request Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
15/11/2020 18:18:9 critical No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
15/11/2020 18:18:2 critical Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
15/11/2020 18:18:2 critical Ranging Request Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
15/11/2020 18:17:56 critical No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
15/11/2020 18:17:56 Warning! RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
15/11/2020 18:17:18 critical No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
15/11/2020 18:13:2 Warning! RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
15/11/2020 18:12:25 critical No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
15/11/2020 18:12:25 Warning! RCS Partial Service;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
1 299000000 1.5 38 256 qam 21
2 203000000 1.5 37 256 qam 9
3 211000000 1.7 37 256 qam 10
4 219000000 1.7 37 256 qam 11
5 227000000 1.7 37 256 qam 12
6 235000000 1.5 37 256 qam 13
7 243000000 1 37 256 qam 14
8 251000000 0.9 37 256 qam 15
9 259000000 0.9 37 256 qam 16
10 267000000 1.2 37 256 qam 17
11 275000000 1.4 37 256 qam 18
12 283000000 1.5 38 256 qam 19
13 291000000 1.5 38 256 qam 20
14 307000000 1.4 38 256 qam 22
15 315000000 1.5 38 256 qam 23
16 323000000 1.7 38 256 qam 24
17 331000000 1.7 38 256 qam 25
18 339000000 1.7 38 256 qam 26
19 347000000 1.7 40 256 qam 27
20 355000000 1.5 38 256 qam 28
21 363000000 1.4 40 256 qam 29
22 371000000 1.2 38 256 qam 30
23 379000000 1.4 38 256 qam 31
24 387000000 1.2 40 256 qam 32


Downstream bonded channels
Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors
1 Locked 38.6 26 157
2 Locked 37.3 66 142
3 Locked 37.6 50 177
4 Locked 37.3 38 201
5 Locked 37.6 45 154
6 Locked 37.6 43 145
7 Locked 37.3 39 135
8 Locked 37.3 38 253
9 Locked 37.3 40 133
10 Locked 37.3 50 189
11 Locked 37.3 35 217
12 Locked 38.6 24 170
13 Locked 38.6 26 187
14 Locked 38.6 25 198
15 Locked 38.9 29 181
16 Locked 38.6 23 182
17 Locked 38.9 22 206
18 Locked 38.6 29 197
19 Locked 40.3 28 214
20 Locked 38.9 29 207
21 Locked 40.9 24 241
22 Locked 38.9 31 282
23 Locked 38.6 22 275
24 Locked 40.3 32 170

Upstream bonded channels
Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
1 46199952 43 5120 16 qam 3
2 39399926 42.5 5120 16 qam 4
3 60300541 43.8 5120 16 qam 1
4 53699834 43.5 5120 16 qam 2


Upstream bonded channels
Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts
1 ATDMA 0 0 0 0
2 ATDMA 0 0 51 0
3 ATDMA 0 0 0 0
4 ATDMA 0 0 0 0

Thanks!

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Alessandro Volta
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Re: Multiple outages. 'No Ranging Response Received - T3 Timeout.'

Your Power Levels look OK, however the modulations on your Upstream Channels are wrong, they are 16 QAM, they should be at 64 QAM.

This will need an engineer to put right.

You can either call in (08:00 is the best time) or wait on here for a few days (6 to 7 days average) until one of the VM Forum Staff comes along.

If you wait on here Do Not bump the thread it will put it further down the VM 'to do list'.

***********************************************************************************************************************************

Mike Robinson
Semi-Retired Aircraft Engineer & Computer Based Training and Learning Designer for many of the world's Military Arms.

My Broadband Ping - Mike Robbo
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Re: Multiple outages. 'No Ranging Response Received - T3 Timeout.'

Thanks for the quick reply!

I'm losing connection (all devices) a few times day now, sometimes 4 or 5 times in the space of 30 minutes. Until I can get a engineer out, would power cycling/factory resetting everything make a difference?
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Alessandro Volta
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Re: Multiple outages. 'No Ranging Response Received - T3 Timeout.'

it may be a good idea to carry out a factory reset on the Hub …

DO NOT DO THIS if the password on the base of the Hub is not legible or missing.

Instructions for Hub 3

Disconnect all unneeded ethernet cables from the rear of the Hub.

With the Hub Powered on use a paperclip or similar (I use a mobile phone SIM Slot tool) and do a pinhole reset.

Depress the pinhole switch for a timed 60 seconds then release.

DO NOT reboot the hub but allow it 5 to 10 minutes for it to boot itself up.

Once a steady white and no other lights are illuminated check your system again.

***********************************************************************************************************************************

Mike Robinson
Semi-Retired Aircraft Engineer & Computer Based Training and Learning Designer for many of the world's Military Arms.

My Broadband Ping - Mike Robbo