No Ranging Response received - T3 time-out

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I've Been Here Awhile
Posts: 3

No Ranging Response received - T3 time-out

Hi all, I've been researching this problem for the last few weeks, and notice many people have similar issues. I have a tech come over a week from now, and want to make sure I ask all the right questions and have him/her check everything they should.

My internet has been intermittent since I moved to Brantford, ON in August 2018. Have had my Hitron replaced 3 times. So I highly doubt it's the modem. My LAN has also been up constantly, but my WAN drops a significant amount per day for about 20-30sec (as many as 15 times a day).

Here is my data. If anyone could help me prepare for when the tech comes, that would be great!!

 

1 04/07/2019 10:37:19 82000300 critical

Ranging Request Retries exhausted

 

2 04/07/2019 10:37:19 82000600 critical Unicast Maintenance Ranging attempted - No response - Retries exhausted;

etc

 

Downstream Overview
Port ID Frequency (MHz) Modulation Signal strength (dBmV) Channel ID Signal noise ratio (dB)
1 633000000 256QAM -0.700 13 36.387
2 849000000 256QAM 1.000 2 35.780
3 855000000 256QAM 1.200 3 35.595
4 861000000 256QAM 1.000 4 35.595
5 579000000 256QAM -1.200 5 36.387
6 585000000 256QAM -1.100 6 35.780
7 591000000 256QAM -1.100 7 35.780
8 597000000 256QAM -1.100 8 35.780
9 603000000 256QAM -0.900 9 35.780
10 609000000 256QAM -0.600 10 36.387
11 615000000 256QAM -0.600 11 36.610
12 621000000 256QAM -0.600 12 36.610
13 303000000 256QAM -3.500 1 37.636
14 639000000 256QAM -0.600 14 36.387
15 645000000 256QAM 0.000 15 36.387
16 651000000 256QAM 0.300 16 37.356
17 657000000 256QAM 0.200 17 36.610
18 663000000 256QAM 0.300 18 36.610
19 669000000 256QAM 0.300 19 36.610
20 675000000 256QAM 0.300 20 36.387
21 681000000 256QAM 0.200 21 36.610
22 687000000 256QAM 0.300 22 36.610
23 693000000 256QAM 0.200 23 36.610
24 699000000 256QAM 0.300 24 36.387
25 705000000 256QAM -0.300 25 36.610
26 711000000 256QAM -0.300 26 36.387
27 717000000 256QAM -0.300 27 36.387
28 723000000 256QAM -0.400 28 35.780
29 825000000 256QAM 1.900 29 36.610
30 831000000 256QAM 1.600 30 36.387
31 837000000 256QAM 1.200 31 35.595
32 843000000 256QAM 1.000 32 35.780
OFDM Downstream Overview
Receiver FFT type Subcarr 0 Frequency(MHz) PLC locked NCP locked MDC1 locked PLC power(dBmv)
0 NA NA NO NO NO NA
1 4K 275600000 YES YES YES -1.700001
Upstream Overview
Port ID Frequency (MHz) Modulation Signal strength (dBmV) Channel ID Bandwidth
1 30596000 ATDMA - 64QAM 38.500 1 6400000
2 38595824 ATDMA - 64QAM 43.250 3 3200000
3 23700000 ATDMA - 64QAM 38.500 2 6400000
OFDM/OFDMA Overview
Channel Index State lin Digital Att Digital Att BW (sc's*fft) Report Power Report Power1_6 FFT Size
0 DISABLED 0.5000 0.0000 0.0000 -inf -1.0000 4K
1 DISABLED 0.5000 0.0000 0.0000 -inf -1.0000 4K
I've Been Here Awhile
Posts: 3

Re: No Ranging Response received - T3 time-out

This is how the cable enters the house. The old wire is connected to a wire that has been added in August.

 

I think it would be better to have a wire without any connectors straight into the outside green box correct?20190407_202416.jpg

 

This is the old wire:

20190407_202416.jpg

I've Been Here Awhile
Posts: 3

Re: No Ranging Response received - T3 time-out

Would any expert on this forum need more information from me in order to provide an answer? please let me know if you do! Smiley Happy

Moderator
Moderator
Posts: 151

Re: No Ranging Response received - T3 time-out

Hey @Lodar,

 

Thank you for your detailed post! Smiley Happy 

 

That is a lot of disconnects, so I would be looking for help as well. Your signal looks good and I agree it probably isn't your modem since you've replaced it a few times already. We do sometimes replace sections of your coaxial cable and use connectors like the one in your picture. We may need to replace the line depending on the state it is in.

 

I think it might be best to wait for the technician you have coming next week so they can track down the intermittency.

 

Perhaps, our Resident Expert @Datalink can give you a few pointers! Smiley Happy

 

RogersTim

 

 

I Plan to Stick Around
Posts: 8

Re: No Ranging Response received - T3 time-out

Ranging Response errors, constant internet drops

 

Honestly I'm not sure what can be done about this because my understanding is it's most likely infrastructure, but here's hoping it's not.

 

For the past few weeks I've been having regular disconnects for no apparent reason. My Coda 4582U gives me errors about a ranging response and will only reconnect when I reboot, ever. I'm not unfamiliar with this issue, I've been having this problem at a variety of other houses over several years. But with regards to the issue now, what options do I have for fixing this? Is there any clue that a tech could look at here to fix this?

 

Downstream Overview    
Port ID Frequency (MHz) Modulation Signal strength (dBmV) Channel ID Signal noise ratio (dB)    
1 591000000 256QAM 2.5 7 38.605    
2 849000000 256QAM -4.4 2 36.387    
3 855000000 256QAM -4.2 3 36.387    
4 861000000 256QAM -2.7 4 37.356    
5 579000000 256QAM 2.4 5 38.983    
6 585000000 256QAM 2.3 6 38.983    
7 279000000 256QAM 5.4 1 38.983    
8 597000000 256QAM 2.3 8 38.605    
9 603000000 256QAM 2.6 9 38.983    
10 609000000 256QAM 3.2 10 38.983    
11 615000000 256QAM 2.7 11 38.605    
12 621000000 256QAM 2.9 12 38.605    
13 633000000 256QAM 2.9 13 38.983    
14 639000000 256QAM 2.8 14 38.605    
15 645000000 256QAM 3.2 15 38.983    
16 651000000 256QAM 3.3 16 38.605    
17 657000000 256QAM 3.4 17 38.605    
18 663000000 256QAM 3.8 18 38.605    
19 669000000 256QAM 4.5 19 38.605    
20 675000000 256QAM 5.1 20 40.366    
21 681000000 256QAM 4.8 21 40.366    
22 687000000 256QAM 4.3 22 38.983    
23 693000000 256QAM 4.3 23 38.983    
24 699000000 256QAM 3.8 24 38.983    
25 705000000 256QAM 3.6 25 38.983    
26 711000000 256QAM 3.2 26 38.983    
27 717000000 256QAM 3.4 27 38.605    
28 723000000 256QAM 3.3 28 38.983    
29 825000000 256QAM -3.3 29 36.61    
30 831000000 256QAM -3.4 30 36.61    
31 837000000 256QAM -3.2 31 36.61    
32 843000000 256QAM -4.4 32 36.387    
OFDM Downstream Overview    
Receiver FFT type Subcarr 0 Frequency(MHz) PLC locked NCP locked MDC1 locked PLC power(dBmv)  
0 NA NA NO NO NO NA  
1 4K 275600000 YES YES YES 4.199997  
Upstream Overview    
Port ID Frequency (MHz) Modulation Signal strength (dBmV) Channel ID Bandwidth    
1 23700000 ATDMA - 64QAM 36.25 5 6400000    
2 38596000 ATDMA - 64QAM 39.75 6 3200000    
3 30596000 ATDMA - 64QAM 36.25 4 6400000    
OFDM/OFDMA Overview    
Channel Index State lin Digital Att Digital Att BW (sc's*fft) Report Power Report Power1_6 FFT Size
0 DISABLED 0.5 0 0 -inf -1 4K
1 DISABLED 0.5 0 0 -inf -1 4K
Moderator
Moderator
Posts: 202

Re: No Ranging Response received - T3 time-out

Hey @Tempystral!

 

Intermittency can be incredibly tedious to troubleshoot on your own for sure. I'm glad you're reaching out here!
Based on the signals provided there's no RF level issue there. Are you able to provide the WAN and LAN uptime from the Status page in your modem? If you can do so after you experience a disconnect that would be optimal. Be sure not to manually reboot the modem before grabbing that snapshot.

This can effectively be the smoking gun that a technician can investigate for you. If there's nothing from within the home causing the concern then maintenance can check for shorts occurring along the line which could also contribute to this intermittency.

@RogersAndy

I Plan to Stick Around
Posts: 8

Re: No Ranging Response received - T3 time-out

It happened again after I woke up this morning. LAN and WAN uptime both say 1 day, 16 minutes. That suggests I last reset the modem/it regained a connection around noon yesterday which as far as I can tell is not true.
I Plan to Stick Around
Posts: 8

Re: No Ranging Response received - T3 time-out

Quick update: This time I caught it right as I was going to sleep. An immediate check says LAN and WAN have been up for 12h, 24m and 12h, 22m respectively, which is correct since I rebooted at 12:30PM or so today. I'll take a photo of the modem in case it's relevant.
I've Been Around
Posts: 1

Re: No Ranging Response received - T3 time-out

Hi there,

 

I found your post because I've been experiencing the same disconnection issues lately.  While away for 3 weeks, my home security became off-line so when I got back, I found out that my internet connection goes down and I have to reboot it several times to get it back online.  Then after accessing the Hitron router pages, I Googled one of the critical errors on the log and that's how I found this forum topic.

 

I may have to call this in this weekend.

Moderator
Moderator
Posts: 202

Re: No Ranging Response received - T3 time-out

Hey @Tempystral,

 

Thanks so much! seeing approximately 2 minutes difference in LAN/WAN uptime is normal after a reboot as that will account for the modem ranging. If there's a difference that exceeds that though that would indicate a loss of internet connection to the modem likely due to some level of RF issue. If you're losing connection on your devices and the WAN uptime is consistent, then the disconnect is likely home network related but keep us posted during the next disconnect if the WAN uptime is at a variance indicating a drop.

 

@RogersAndy