6 Messages
Intermittent connection drops, 100% packet loss, Maybe bad power levels at play?
The issue
The internet keeps cutting out entirely making it impossible to work, stream, and game. I've been observing the issue this entire week and have noticed on a single day alone Monday, Jan 8, 2023 that the internet was completely out more than 22 times in a 27 hour time period. Outages happen during working hours PT and at night PT with no noticeable pattern. See below for examples of times when my firewall was detecting 100% packet loss within the last week.
Screenshot 2024-01-12 at 7.15.55 AM.png
Screenshot 2024-01-12 at 3.21.49 PM.png
Screenshot 2024-01-10 at 2.09.07 AM.png
Screenshot 2024-01-09 at 12.09.49 AM.png
The Ask
I'm assuming the issue is partly due to the power levels on my ingress coax being out of spec for my modem (despite my modem being supported by xfinity https://www.xfinity.com/support/devices/) but perhaps there are other issues at play as well.
And yes, I have tested removing each component in the system. When the connection works, it works great so it cannot be my hardware.
Can I get some help figuring out what is happening with my internet?
My network setup
MoCA Filter installed at point of entry:
GLP-1G70CW MoCA Filter - 70dB MoCA PoE filter, 5 - 1002MHz, low pass -70 filter, 6kV “combo wave” surge
https://www.ppc-online.com/product-search/filter-snlp-1g70cw
Modem:
Netgear Nighthawk CM2000 - DOCSIS 3.1 Cable Modem, 2.5Gbps
https://www.netgear.com/home/wifi/modems/cm2000/
Firewall Appliance:
Protectli Vault - 4x 2.5Gbps ports, Intel(R) Celeron(R) J6412 @2.00GHz (4 cores, 4 threads)
https://www.amazon.com/Protectli-Vault-VP2420-4-Firewall-Appliance/dp/B0BQ1SNXLD
Firewall:
OPNsense 23.7.11-amd64
WiFi Access Point:
TP-Link AX3000 (Archer AX55 Pro) - WiFi 6 Router, 2.5Gbps
https://www.tp-link.com/us/home-networking/wifi-router/archer-ax3000/
Ethernet Cables:
GearIT Cat6 Patch Cable 6ft
Upstream and downstream power levels are bad
According to Netgear on their knowledge base (https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router), I need downstream power levels between [-7 dBmV, +7 dBmV] and upstream power levels between [38 dBmV, 48 dBmV].
Good Downstream power levels are within -7 to +7 dBmV. Good Upstream power levels are within 38-48 dBmV.
But as you can see below, my downstream power levels are not within the desired [-7 dBmV, +7 dBmV] range. The downstream power levels I'm seeing are much higher - in the 8-9 dBmV range. Similarly, my upstream power levels are not within the desired [38 dBmV, 48 dBmV] range. The upstream power levels I'm seeing are much lower - in the 34-37 dBmV range.
Downstream Bonded Channels
Channel | LockedStatus | Modulation | ChannelID | Frequency | Power | SNR | Correctables | Uncorrectables |
1 | Locked | QAM256 | 20 | 507000000 Hz | 9 | 41.9 | 7159 | 5738 |
2 | Locked | QAM256 | 4 | 405000000 Hz | 8.4 | 41.8 | 12448 | 6605 |
3 | Locked | QAM256 | 5 | 411000000 Hz | 8.2 | 41.8 | 10545 | 5704 |
4 | Locked | QAM256 | 6 | 417000000 Hz | 8.3 | 41.9 | 12232 | 6736 |
5 | Locked | QAM256 | 7 | 423000000 Hz | 8.3 | 41.9 | 8698 | 5485 |
6 | Locked | QAM256 | 8 | 429000000 Hz | 8.6 | 42 | 7772 | 5516 |
7 | Locked | QAM256 | 9 | 435000000 Hz | 8.1 | 41.9 | 8064 | 4468 |
8 | Locked | QAM256 | 10 | 441000000 Hz | 8.4 | 42 | 8607 | 5412 |
9 | Locked | QAM256 | 11 | 447000000 Hz | 8.5 | 41.9 | 8621 | 5400 |
10 | Locked | QAM256 | 12 | 453000000 Hz | 8.8 | 41.9 | 6944 | 5670 |
11 | Locked | QAM256 | 13 | 459000000 Hz | 8.8 | 41.9 | 6688 | 4384 |
12 | Locked | QAM256 | 14 | 465000000 Hz | 8.9 | 41.8 | 6799 | 4550 |
13 | Locked | QAM256 | 15 | 471000000 Hz | 9 | 41.9 | 7870 | 4069 |
14 | Locked | QAM256 | 16 | 477000000 Hz | 9.1 | 41.9 | 9053 | 4636 |
15 | Locked | QAM256 | 17 | 483000000 Hz | 9.2 | 42 | 6790 | 4848 |
16 | Locked | QAM256 | 18 | 489000000 Hz | 9.2 | 41.9 | 5420 | 4459 |
17 | Locked | QAM256 | 19 | 495000000 Hz | 9 | 41.8 | 5725 | 3776 |
18 | Locked | QAM256 | 21 | 513000000 Hz | 9.2 | 42 | 5611 | 4122 |
19 | Locked | QAM256 | 22 | 519000000 Hz | 9.2 | 42 | 5633 | 4271 |
20 | Locked | QAM256 | 23 | 525000000 Hz | 9 | 41.9 | 4587 | 3497 |
21 | Locked | QAM256 | 24 | 531000000 Hz | 9 | 41.9 | 4133 | 3389 |
22 | Locked | QAM256 | 25 | 543000000 Hz | 9 | 41.9 | 4783 | 3844 |
23 | Locked | QAM256 | 26 | 549000000 Hz | 8.8 | 41.8 | 4387 | 3454 |
24 | Locked | QAM256 | 27 | 555000000 Hz | 9 | 41.9 | 4198 | 3817 |
25 | Locked | QAM256 | 28 | 561000000 Hz | 8.5 | 41.6 | 4158 | 2691 |
26 | Locked | QAM256 | 29 | 567000000 Hz | 8.9 | 41.8 | 4115 | 3215 |
27 | Locked | QAM256 | 30 | 573000000 Hz | 8.8 | 41.8 | 3665 | 2751 |
28 | Locked | QAM256 | 31 | 579000000 Hz | 8.9 | 41.8 | 3994 | 3755 |
29 | Locked | QAM256 | 32 | 585000000 Hz | 8.9 | 41.8 | 3687 | 2837 |
30 | Locked | QAM256 | 33 | 591000000 Hz | 9 | 41.8 | 3393 | 2972 |
31 | Locked | QAM256 | 34 | 597000000 Hz | 8.6 | 41.7 | 3086 | 2328 |
32 | Not Locked | Unknown | 0 | 0 Hz | 0 | 0 | 0 | 0 |
Upstream Bonded Channels
Channel | LockedStatus | ChannelType | ChannelID | SymbolRate | Frequency | Power |
1 | Locked | ATDMA | 3 | 5120 Ksym/sec | 29200000 Hz | 37.3 dBmV |
2 | Locked | ATDMA | 1 | 5120 Ksym/sec | 16400000 Hz | 34.8 dBmV |
3 | Locked | ATDMA | 2 | 5120 Ksym/sec | 22800000 Hz | 36.3 dBmV |
4 | Locked | ATDMA | 4 | 5120 Ksym/sec | 35600000 Hz | 38.5 dBmV |
5 | Not Locked | Unknown | 0 | 0 | 0 | 0 |
6 | Not Locked | Unknown | 0 | 0 | 0 | 0 |
7 | Not Locked | Unknown | 0 | 0 | 0 | 0 |
8 | Not Locked | Unknown | 0 | 0 | 0 | 0 |
Event logs from my modem
Note that my modem has logs where it tried to connect 16 times to the upstream CMTS and was unable to do so. This most recent outage happened today at 3:20pm PT which correlates with the timing of my firewall detecting 100% packet loss.
Time | Priority | Description |
Fri Jan 12 15:25:36 2024 | Notice (6) |
DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:25:35 2024 | Notice (6) |
TLV-11 - unrecognized OID;CM-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:25:27 2024 | Notice (6) |
Honoring MDD; IP provisioning mode = IPv6
|
Fri Jan 12 15:25:20 2024 | Critical (3) |
No Ranging Response received - T3 time-out;CM-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:25:06 2024 | Warning (5) |
ToD request sent - No Response received;CM-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:25:06 2024 | Critical (3) |
Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:25:05 2024 | Critical (3) |
No Ranging Response received - T3 time-out;CM--QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:25:05 2024 | Critical (3) |
Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-;CM-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:24:55 2024 | Critical (3) |
No Ranging Response received - T3 time-out;;CM-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:22:55 2024 | Notice (6) |
CM-STATUS message sent. Event Type Code: 7; Chan ID: 1 4; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:22:36 2024 | Critical (3) |
No Ranging Response received - T3 time-out;-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:22:24 2024 | Notice (6) |
CM-STATUS message sent. Event Type Code: 7; Chan ID: 1 4; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:22:10 2024 | Critical (3) |
No Ranging Response received - T3 time-out;-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:21:54 2024 | Notice (6) |
CM-STATUS message sent. Event Type Code: 7; Chan ID: 1 4; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:21:51 2024 | Critical (3) |
No Ranging Response received - T3 time-out;-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:21:24 2024 | Notice (6) |
CM-STATUS message sent. Event Type Code: 7; Chan ID: 1 4; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:21:20 2024 | Critical (3) |
No Ranging Response received - T3 time-out;-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:21:06 2024 | Critical (3) |
Started Unicast Maintenance Ranging - No Response received - T3 time-out;-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:21:02 2024 | Critical (3) |
No Ranging Response received - T3 time-out;-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:21:02 2024 | Critical (3) |
Started Unicast Maintenance Ranging - No Response received - T3 time-out;-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:20:58 2024 | Critical (3) |
No Ranging Response received - T3 time-out;-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:20:57 2024 | Critical (3) |
Started Unicast Maintenance Ranging - No Response received - T3 time-out;-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:20:53 2024 | Notice (6) |
CM-STATUS message sent. Event Type Code: 7; Chan ID: 1 4; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:20:53 2024 | Critical (3) |
Started Unicast Maintenance Ranging - No Response received - T3 time-out;-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:20:53 2024 | Critical (3) |
No Ranging Response received - T3 time-out;-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:20:52 2024 | Critical (3) |
Started Unicast Maintenance Ranging - No Response received - T3 time-out;-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:20:49 2024 | Critical (3) |
No Ranging Response received - T3 time-out;-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:20:49 2024 | Critical (3) |
Started Unicast Maintenance Ranging - No Response received - T3 time-out;-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:20:46 2024 | Critical (3) |
No Ranging Response received - T3 time-out;-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:20:45 2024 | Critical (3) |
16 consecutive T3 timeouts while trying to range on upstream channel 0;-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:20:45 2024 | Critical (3) |
Unicast Maintenance Ranging attempted - No response - Retries exhausted;-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:20:45 2024 | Critical (3) |
Started Unicast Maintenance Ranging - No Response received - T3 time-out;-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:20:42 2024 | Critical (3) |
No Ranging Response received - T3 time-out;-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:20:29 2024 | Critical (3) |
16 consecutive T3 timeouts while trying to range on upstream channel 1;-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:20:29 2024 | Critical (3) |
Unicast Maintenance Ranging attempted - No response - Retries exhausted;-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:20:29 2024 | Critical (3) |
Started Unicast Maintenance Ranging - No Response received - T3 time-out;-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:07:24 2024 | Notice (6) |
DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:07:23 2024 | Notice (6) |
TLV-11 - unrecognized OID;CM-QOS=1.1;CM-VER=3.1;
|
Fri Jan 12 15:07:13 2024 | Notice (6) |
Honoring MDD; IP provisioning mode = IPv6
|
Fri Jan 12 15:07:08 2024 | Critical (3) |
No Ranging Response received - T3 time-out;-QOS=1.1;CM-VER=3.1;
|
[Edited: Removed MAC Addresses]
XfinityVianney
Official Employee
•
2.2K Messages
1 year ago
Hi, @user_53yxh3. Thank you for reaching out. I hope you are doing well. I see you have a bit going on, and I would like to review this further on our end. With these many timeouts and hiccups, I would like to review the local plant/node as well. I ask that you reach out privately, so we can cover the details of your account. You can start by clicking the chat icon located in the top right corner of your forums page when signed in. Once there, you can direct your messages to "Xfinity Support." Please add your full name and service address to help us locate your account. Let me know if you have any questions.
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user_53yxh3
6 Messages
1 year ago
First troubleshooting step from Xfinity
Reset the modem. I'll continue to monitor the quality of the connection.
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XfinityJustinC
Official Employee
•
1.2K Messages
1 year ago
@user_53yxh3 I am glad we were able to get a technician scheduled to your home to investigate your network connection, please let us know if you need anything else. We're available 7 days a week from 6am - 12am ET for employee support, thank you.
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