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Forum Discussion
CM30000 Conn drop -Started Unicast Maintenance Ranging - No Response received
Hi I am getting the drop intermetly drop from comcast. They have check and replaced the following: Cables outside. Checked inside cable The latest firmware The device started intermittentl...
It's a CM3000.
Comcast put a new line out from the house. They tested that line as well.
I've gone over it with Comcast.
Not sure what other action I can do between Netgear and Comast.
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: Sat Nov 09 14:51:44 2024
Startup Procedure
Acquire Downstream Channel: 459000000 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 20 459000000 Hz 3.3 38.6 13838 29578
2 Locked QAM256 17 441000000 Hz 3.3 38.5 13013 29232
3 Locked QAM256 18 447000000 Hz 3.3 38.5 12938 29685
4 Locked QAM256 19 453000000 Hz 3.4 38.7 13002 28925
5 Locked QAM256 21 465000000 Hz 3.2 38.5 13049 29106
6 Locked QAM256 22 471000000 Hz 3.2 38.5 13124 29892
7 Locked QAM256 23 477000000 Hz 3.3 38.6 13374 29434
8 Locked QAM256 24 483000000 Hz 3.2 38.5 2401 4841
9 Locked QAM256 25 489000000 Hz 3.2 38.5 13301 29800
10 Locked QAM256 26 495000000 Hz 3.4 38.7 13442 29498
11 Locked QAM256 27 501000000 Hz 3.2 38.8 13607 29170
12 Locked QAM256 28 507000000 Hz 3.3 38.8 13578 29538
13 Locked QAM256 29 513000000 Hz 3.1 38.8 13779 30146
14 Locked QAM256 30 519000000 Hz 3.2 38.7 13644 29758
15 Locked QAM256 31 525000000 Hz 3.1 38.7 13450 30094
16 Locked QAM256 32 531000000 Hz 3.3 38.9 13787 29968
17 Locked QAM256 33 537000000 Hz 3.4 39 14157 29676
18 Locked QAM256 34 543000000 Hz 3.2 38.9 14126 31084
19 Locked QAM256 35 549000000 Hz 3.1 38.9 14169 30054
20 Locked QAM256 36 555000000 Hz 2.9 38.9 14332 30203
21 Locked QAM256 37 561000000 Hz 2.9 39 14228 30035
22 Locked QAM256 38 567000000 Hz 2.9 39 14288 29910
23 Locked QAM256 39 573000000 Hz 3 39.1 14489 29660
24 Locked QAM256 40 579000000 Hz 3.1 39.1 14383 30556
25 Locked QAM256 41 585000000 Hz 3.3 39.2 14676 29277
26 Locked QAM256 42 591000000 Hz 3.3 39.1 14634 29887
27 Locked QAM256 43 597000000 Hz 3.3 39.1 14549 30592
28 Locked QAM256 44 603000000 Hz 3.4 39.1 14539 29741
29 Locked QAM256 45 609000000 Hz 3.7 39.3 14543 30159
30 Locked QAM256 46 615000000 Hz 3.7 39.4 14345 30550
31 Locked QAM256 47 621000000 Hz 3.9 39.5 14621 29246
32 Not Locked Unknown 0 0 Hz 0.0 0.0 0 0
Upstream Bonded Channels
Channel LockedStatus ChannelType ChannelID SymbolRate Frequency Power
1 Locked ATDMA 11 2560 Ksym/sec 40400000 Hz 42.5 dBmV
2 Locked ATDMA 1 2560 Ksym/sec 10400000 Hz 40.3 dBmV
3 Locked ATDMA 2 5120 Ksym/sec 16400000 Hz 40.5 dBmV
4 Locked ATDMA 3 5120 Ksym/sec 22800000 Hz 41.0 dBmV
5 Locked ATDMA 4 5120 Ksym/sec 29200000 Hz 41.5 dBmV
6 Locked ATDMA 5 5120 Ksym/sec 35600000 Hz 41.5 dBmV
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 48 685000000 Hz 4.38 dBmV 39.2 dB 988 ~ 3107 772892940 733973804 8089
2 Not Locked 0 0 0 Hz 0 dBmV 0 dB 0 ~ 4095 0 0 0
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
Event Log
Time Priority Description
Sat Nov 09 14:43:08 2024 Notice (6) DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:43:07 2024 Notice (6) TLV-11 - unrecognized OID;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:42:58 2024 Notice (6) Honoring MDD; IP provisioning mode = IPv6
Sat Nov 09 14:42:49 2024 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:42:39 2024 Warning (5) ToD request sent - No Response received;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:42:39 2024 Critical (3) 16 consecutive T3 timeouts while trying to range on upstream channel 2;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:42:39 2024 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:42:39 2024 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:42:35 2024 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:42:34 2024 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:42:27 2024 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:42:10 2024 Notice (6) CM-STATUS message sent. Event Type Code: 7; Chan ID: 1 2 4 5 11; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:42:09 2024 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:42:03 2024 Critical (3) 16 consecutive T3 timeouts while trying to range on upstream channel 5;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:42:03 2024 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:42:03 2024 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:42:03 2024 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:42:01 2024 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:42:01 2024 Critical (3) 16 consecutive T3 timeouts while trying to range on upstream channel 3;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:42:01 2024 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:42:01 2024 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:41:52 2024 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:41:40 2024 Notice (6) CM-STATUS message sent. Event Type Code: 7; Chan ID: 1 2 5; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:41:33 2024 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:41:29 2024 Critical (3) 16 consecutive T3 timeouts while trying to range on upstream channel 0;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:41:29 2024 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:41:29 2024 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:41:28 2024 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:41:27 2024 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:41:26 2024 Critical (3) 16 consecutive T3 timeouts while trying to range on upstream channel 4;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:41:26 2024 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:41:26 2024 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:41:25 2024 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:41:25 2024 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:41:24 2024 Critical (3) 16 consecutive T3 timeouts while trying to range on upstream channel 1;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:41:24 2024 Critical (3) Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:41:24 2024 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:09:19 2024 Notice (6) CM-STATUS message sent. Event Type Code: 24; Chan ID: 48; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1 2 3.;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:07:30 2024 Notice (6) CM-STATUS message sent. Event Type Code: 8; Chan ID: 1 2 5 11; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
Sat Nov 09 14:06:43 2024 Notice (6) CM-STATUS message sent. Event Type Code: 8; Chan ID: 1 2 5; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=54:07:7d:01:45:e8;CMTS-MAC=00:01:5c:63:12:5e;CM-QOS=1.1;CM-VER=3.1;
I have RAX45 router but I have seen the middle light on the cable modem flash right when it dropped.
OK, power levels look good.
However your getting lots of Correctables and UN-correctables that should be mostly zeros.Any Criticals, Errors or Warnings seen in the event logs needs to be reviewed and resolved by the ISP. Indicates a signal issue on the ISP line up to the modem.
Be sure your using a good quality LAN cable between the modem and router. CAT6A STP is recommended.
What is the brand and model of the host wifi router connected to the modem?Have the ISP check the signal and line quality UP to the modem. Be sure the ISP provisions the modem correctly.
Be sure there are no coax cable line splitters in the between the modem and ISP service box.
Be sure your using good quality RG6 coax cable up to the modem.
Start with removing any amplifiers, signal attenuators, or splitters from the coax.
From there check the line for kinks, damage, moisture in the line.
Check the connectors for improperly made ends, foil touching the copper coax line, loose connections, bad/old/cheap connectors, or corroded connections. Replace them if you do.
Be sure to power OFF the modem for 1 minute then back ON.
https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Modems/m-p/1530376#M12853
https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router
https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html
https://highspeed.tips/docsis-events/
