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Ethernet Connection Disconnects (20 seconds at a time) - Various Points In The Day

Rizqo
Joining in

Hello, 

As the title suggests, for the last 3-4 months my ethernet on my desktop PC has been dropping at various points in the day. I suspect it may have something to do with my Hub 5.

Tonight (06/07/2024 @ around 10 pm) I had a couple of disconnects in a row. I may only get 1 disconnect on some days, but on others, I may get 1 - 2 an hour.

I have:

- Replaced the ethernet cable.

- Checked for outages in my area.

- Reseated each cable into the router and tried each individual ethernet port.

- Resetting the router.

Unfortunately, nothing has worked. Here are my downstream, upstream and network logs:

3.0 Downstream channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
13310000000.641QAM 25625
21950000001.640QAM 2568
32030000001.240QAM 2569
42110000001.441QAM 25610
52190000001.441QAM 25611
62270000000.940QAM 25612
72350000000.740QAM 25613
82430000000.440QAM 25614
92510000000.140QAM 25615
102590000000.140QAM 25616
11267000000141QAM 25617
122750000001.641QAM 25618
132830000001.741QAM 25619
142910000001.541QAM 25620
152990000001.541QAM 25621
163070000001.541QAM 25622
173150000001.341QAM 25623
183230000000.941QAM 25624
193390000000.641QAM 25626
203470000000.341QAM 25627
213550000000.140QAM 25628
223630000000.141QAM 25629
233710000000.440QAM 25630
243790000000.940QAM 25631
25387000000-1.140QAM 25632
26395000000-1.140QAM 25633
274030000000.940QAM 25634
284110000000.940QAM 25635
294190000000.840QAM 25636
304270000000.640QAM 25637
314350000000.440QAM 25638

3.0 Downstream channels

Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors
1Locked4100
2Locked4000
3Locked4000
4Locked4100
5Locked4100
6Locked4000
7Locked4000
8Locked4000
9Locked4000
10Locked4000
11Locked4100
12Locked4100
13Locked4100
14Locked4100
15Locked4100
16Locked4100
17Locked4100
18Locked4100
19Locked4100
20Locked4100
21Locked4000
22Locked4100
23Locked4000
24Locked4000
25Locked4000
26Locked4000
27Locked4000
28Locked4000
29Locked4000
30Locked4000
31Locked4000

3.1 Downstream channels

Channel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz)
41944K1840QAM 40961108

3.1 Downstream channels

Channel ID Locked Status RxMER Data (dB) PLC Power (dBmV) Corrected errors (Active Profile) Uncorrectable errors (Active Profile)
41Locked38-6.3191190730

 

3.0 Upstream channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
04960000048.55120QAM 644
14310000048.55120QAM 645
23660000048.85120QAM 646
33010000048.55120QAM 648
42360000048.35120QAM 6411

3.0 Upstream channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts
0ATDMA0000
1ATDMA0000
2ATDMA0000
3ATDMA0000
4ATDMA0000

3.1 Upstream channels

Channel Channel Width (MHz) Power (dBmV) FFT Type Modulation
1210.444.02KQAM 256

3.1 Upstream channels

Channel Channel Type Number of Active Subcarriers First Active Subcarrier (Hz) T3 Timeouts T4 Timeouts
12OFDMA208740000000

 

Network Log

Time Priority Description
06-07-2024 23:14:31noticeGUI Login Status - Login Success from LAN interface
06-07-2024 23:10:36noticeREGISTRATION COMPLETE - Waiting for Operational status
06-07-2024 23:10:32noticeUS profile assignment change. US Chan ID: 12; Previous Profile: 13; New Profile: 11 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
06-07-2024 23:10:26noticeDS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
06-07-2024 23:10:19warningDHCP WARNING - Non-critical field invalid in response ;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
06-07-2024 23:10:16noticeHonoring MDD; IP provisioning mode = IPv4
06-07-2024 23:10:02criticalSYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
06-07-2024 23:10:01criticalCable Modem Reboot because of - Reboot Timezone Change
06-07-2024 23:07:32criticalReceived Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
06-07-2024 23:06:44criticalStarted Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
06-07-2024 23:06:23criticalSYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
06-07-2024 23:06:16criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
06-07-2024 23:06:14criticalReceived Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
06-07-2024 23:02:13criticalUnicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
06-07-2024 23:01:29criticalStarted Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
06-07-2024 23:01:18criticalCable Modem Reboot because of - Reboot Factory reset ACS
06-07-2024 23:01:18criticalSYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

I also had some network logs prior:

Router status

StatusDownstreamUpstreamConfigurationNetwork Log
Refresh data
Network Log

Time Priority Description
06-07-2024 23:14:31 notice GUI Login Status - Login Success from LAN interface
06-07-2024 22:10:36 notice REGISTRATION COMPLETE - Waiting for Operational status
06-07-2024 22:10:32 notice US profile assignment change. US Chan ID: 12; Previous Profile: 13; New Profile: 11 13.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
06-07-2024 22:10:26 notice DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
06-07-2024 22:10:19 warning DHCP WARNING - Non-critical field invalid in response ;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
06-07-2024 22:10:16 notice Honoring MDD; IP provisioning mode = IPv4
06-07-2024 22:10:02 critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
06-07-2024 22:10:01 critical Cable Modem Reboot because of - Reboot Timezone Change
06-07-2024 22:07:32 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=3.1;
06-07-2024 22:06:44 critical Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
06-07-2024 22:06:23 critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
06-07-2024 22:06:16 critical No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
06-07-2024 22:06:14 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=3.1;
06-07-2024 22:02:13 critical Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
06-07-2024 22:01:29 critical Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;
06-07-2024 22:01:18 critical Cable Modem Reboot because of - Reboot Factory reset ACS
06-07-2024 22:01:18 critical SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;

1 REPLY 1

Matthew_ML
Forum Team
Forum Team

Hey Rizqo, thank you for reaching out and a warm welcome to the community I am so sorry to hear about this.

I am going to send you a DM so we can look into this 🙂 

Matt - Forum Team


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