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erikm1
1st Topic

2 Messages

Wednesday, September 4th, 2024 2:34 AM

Unicast maintenance ranging no response t3 timeout

My error logs are below. I have this issue where My internet just drops at least twice a day. I've had someone come by and check my service but said there were no issues. I've been in contact with Xfinity multiple times, and I've purchased a new Modem per XFinity's suggestion. I pay a lot for fast internet but what's the point if it drops whenever I want to use it? Pretty desperate here.

Tue Sep 03 10:14:51 2024 (Notice (6)) CM-STATUS message sent. Event Type Code: 20; Chan ID: 193; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;C
Tue Sep 03 10:06:41 2024 (Critical (3)) UCD invalid or channel unusable;
Tue Sep 03 10:06:35 2024 (Notice (6)) DS profile assignment change. DS Chan ID: 33; Previous Profile: ; New Profile: 1 2 3.;
Tue Sep 03 10:06:34 2024 (Notice (6)) DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;
Tue Sep 03 10:06:33 2024 (Notice (6)) TLV-11 - unrecognized OID;
Tue Sep 03 10:06:24 2024 (Notice (6)) Honoring MDD; IP provisioning mode = IPv6
Tue Sep 03 10:06:20 2024 (Critical (3)) UCD invalid or channel unusable;
Tue Sep 03 10:06:14 2024 (Warning (5)) ToD request sent - No Response received;
Tue Sep 03 10:06:05 2024 (Notice (6)) Honoring MDD; IP provisioning mode = IPv6
Tue Sep 03 10:05:49 2024 (Critical (3)) No Ranging Response received - T3 time-out;
Tue Sep 03 10:05:29 2024 (Warning (5)) ToD request sent - No Response received;
Tue Sep 03 10:05:29 2024 (Critical (3)) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;
Tue Sep 03 10:05:28 2024 (Critical (3)) No Ranging Response received - T3 time-out;
Tue Sep 03 10:05:28 2024 (Critical (3)) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;
Tue Sep 03 10:05:25 2024 (Critical (3)) No Ranging Response received - T3 time-out;
Tue Sep 03 10:05:24 2024 (Critical (3)) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;
Tue Sep 03 10:04:28 2024 (Critical (3)) Started Unicast Maintenance Ranging - No Response received - T3 time-out;
Tue Sep 03 10:03:43 2024 (Critical (3)) UCD invalid or channel unusable;
Tue Sep 03 10:03:36 2024 (Notice (6)) DS profile assignment change. DS Chan ID: 33; Previous Profile: ; New Profile: 1 2 3.;
Tue Sep 03 10:03:35 2024 (Notice (6)) DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;
Tue Sep 03 10:03:34 2024 (Notice (6)) TLV-11 - unrecognized OID;
Tue Sep 03 10:03:22 2024 (Critical (3)) UCD invalid or channel unusable;
Tue Sep 03 10:03:16 2024 (Warning (5)) ToD request sent - No Response received
Tue Sep 03 10:03:07 2024 (Notice (6)) Honoring MDD; IP provisioning mode = IPv6
Tue Sep 03 10:03:02 2024 (Critical (3)) No Ranging Response received - T3 time-out;
Tue Sep 03 10:02:38 2024 (Warning (5)) ToD request sent - No Response received;
Tue Sep 03 10:02:36 2024 (Critical (3)) No Ranging Response received - T3 time-out;
Tue Sep 03 10:02:31 2024 (Notice (6)) CM-STATUS message sent. Event Type Code: 7; Chan ID: 4; DSID: N/A; 
Tue Sep 03 10:02:29 2024 (Critical (3)) No Ranging Response received - T3 time-out;
Tue Sep 03 10:02:26 2024 (Critical (3)) 16 consecutive T3 timeouts while trying to range on upstream channel 3;
Tue Sep 03 10:02:26 2024 (Critical (3)) Unicast Maintenance Ranging attempted - No response - Retries exhausted;
Tue Sep 03 10:02:26 2024 (Critical (3)) Started Unicast Maintenance Ranging - No Response received - T3 time-out;

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3 months ago

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EG

Expert

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107.2K Messages

3 months ago

@erikm1

You need to also post the modem's signal status values. Try getting them here; http://192.168.100.1  or here http://10.0.0.1 

Please copy all of the text in its entirety of the *Downstream Power Levels*, the *SNR's* (Signal to Noise Ratios), and the *Upstream Power Level* numbers and paste them into your next post.

 

(edited)

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erikm1

2 Messages

below is what i could find, note, my internet goes out for 10-15 mins at a time and the last time this happened was probably a 8 hours ago or so, so not sure if that will affect your interpretation of the below

Cable Diagnostic

Status: Good

Action:
Your setup looks fine. If you can't access the internet, make sure you properly activated the modem. If modem has been activated and you still can't access the internet, contact your service provider for troubleshooting help.
If you can access the internet but has other internet issue, the Netgear Cable Knowledge Base can provide additional troubleshooting info.

CM Status: Good

Downstream Status: Good

    Downstream Power Level: Good

    Downstream SNR Level: Good

Upstream Status: Good

    Upstream Power Level: Good


Current Time: Wed Sep 04 15:34:36 2024

Startup Procedure
Acquire Downstream Channel: 423000000 Hz  Locked
Connectivity State:          OK       Operational
Boot State:                  OK       Operational
Security:                   Enabled   BPI+
IP Provisioning Mode:       Honor MDD   IPv6 only


Downstream Bonded Channels
Channel LockedStatus Modulation ChannelID  Frequency     Power    SNR   Correctables Uncorrectables     
      1     Locked     QAM256      4     423000000 Hz     5.8     44.8     23599     27734
      2     Locked     QAM256      1     405000000 Hz     5.3     44.5     18637     25023
      3     Locked     QAM256      2     411000000 Hz     5.4     44.2     23109     31175
      4     Locked     QAM256      3     417000000 Hz     5.4     44.7     23943     30227
      5     Locked     QAM256      5     429000000 Hz     6.2     45     20021     25575
      6     Locked     QAM256      6     435000000 Hz     6.3     45.1     16527     18621
      7     Locked     QAM256      7     441000000 Hz     6     44.9     15120     14155
      8     Locked     QAM256      8     447000000 Hz     6     45     17528     19998
      9     Locked     QAM256      9     453000000 Hz     5.9     44.9     20202     23108
     10     Locked     QAM256     10     459000000 Hz     6     44.9     19573     23848
     11     Locked     QAM256     11     465000000 Hz     6.2     45     14572     14784
     12     Locked     QAM256     12     471000000 Hz     5.7     44.7     15902     18125
     13     Locked     QAM256     13     477000000 Hz     5.2     44.4     19444     23183
     14     Locked     QAM256     14     483000000 Hz     4.7     44.2     22115     29722
     15     Locked     QAM256     15     489000000 Hz     4.7     44.2     17452     29557
     16     Locked     QAM256     16     495000000 Hz     4.7     44.2     9027     5736
     17     Locked     QAM256     17     501000000 Hz     4.1     43.8     14843     19007
     18     Locked     QAM256     18     507000000 Hz     3.8     43.6     19100     23592
     19     Locked     QAM256     19     513000000 Hz     3.7     43.6     20751     24622
     20     Locked     QAM256     20     519000000 Hz     4     43.9     20586     31035
     21     Locked     QAM256     21     525000000 Hz     4.6     44.2     16182     26200
     22     Locked     QAM256     22     531000000 Hz     4.9     44.3     9532     7743
     23     Locked     QAM256     23     537000000 Hz     4.4     44     9824     9199
     24     Locked     QAM256     24     543000000 Hz     3.4     43.4     14691     18027
     25     Locked     QAM256     25     549000000 Hz     2.2     42.6     18573     20929
     26     Locked     QAM256     26     555000000 Hz     2.1     42.5     20422     26823
     27     Locked     QAM256     27     561000000 Hz     2.8     43     18431     33533
     28     Locked     QAM256     28     567000000 Hz     3.6     43.4     8013     8427
     29     Locked     QAM256     29     573000000 Hz     3.8     43.6     10672     10552
     30     Locked     QAM256     30     579000000 Hz     3.7     43.4     15371     16399
     31     Locked     QAM256     31     585000000 Hz     3.6     43.3     17149     20926
     32     Locked     QAM256     32     591000000 Hz     3.8     43.5     13135     19014

Upstream Bonded Channels
Channel   LockedStatus  ChannelType ChannelID   SymbolRate        Frequency       Power     
      1       Locked       ATDMA      3       5120 Ksym/sec       29200000 Hz       47.0 dBmV
      2       Locked       ATDMA      2       5120 Ksym/sec       22800000 Hz       46.5 dBmV
      3       Locked       ATDMA      1       5120 Ksym/sec       16400000 Hz       45.8 dBmV
      4       Locked       ATDMA      4       5120 Ksym/sec       35600000 Hz       47.8 dBmV
      5       Not Locked       Unknown      0       0       0       0.0
      6       Not Locked       Unknown      0       0       0       0.0
      7       Not Locked       Unknown      0       0       0       0.0
      8       Not Locked       Unknown      0       0       0       0.0

Downstream OFDM Channels
Channel   LockedStatus  ProfileID  ChannelID    Frequency       Power       SNR/MER    ActiveSubcarrier    Unerror    Correctable   Uncorrectable
      1     Locked     0 ,1 ,2 ,3     193     690000000 Hz     4.18 dBmV     42.4 dB     628 ~ 3467     10658215038     9276942005     84446
      2     Locked     0 ,1 ,2 ,3     194     957000000 Hz     0.78 dBmV     39.3 dB     148 ~ 3947     11021821011     10195830875     127116

Upstream OFDMA Channels
Channel   LockedStatus    ProfileID    ChannelID    Frequency       Power
      1     Not Locked     0      0     0 Hz     0 dBmV
      2     Not Locked     0      0     0 Hz     0 dBmV

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3 months ago

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XfinityChelseaB

Official Employee

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1.2K Messages

Hello @erikm1, Thanks so much for taking a moment out of your day to leave a post on our community forum. If you could send our team a direct message with your full name, the name listed on the account (if different), and the service address associated with your account, I'd be more than happy to look into this for you. To send a Direct Message, please click on the chat icon in the top-right corner of the screen, next to the bell icon, and then type or select "Xfinity Support" to initiate a direct message.

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

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3 months ago

EG

Expert

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107.2K Messages

3 months ago

The signal status values at that snapshot in time were OK but the error log entries indicate that something is going on. And there are a fair number of uncorrectable bit errors... Perhaps there is spurious noise ingress into the line(s) /  an upstream channel / return path impairment somewhere.

There are other signal stat values that can't be read by the modem. They are the "Upstream Rx Power" (Upstream Receive Power Level), the "Upstream SNR Ch." (Upstream Signal To Noise Ratio), and the "Upstream ICFR" (In Channel Frequency Response). These are as equally important in diagnosing connectivity issues as are the modem's stats.


I'm going to escalate your issue to the Comcast corporate employees (The Digital Care Team) who are available to these boards. They will be able to poll the CMTS (Cable Modem Termination System) to check for any real-time degradation and / or error reports, see your node / cable plant, and modem health, and see whether or not everything is in the green zone. They can also see a history plot for the modem and those upstream receive signal stats.


You should get a reply here in your topic. Good luck !

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