Orbi WiFi 7 RBE973
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Re: CM1000v2 Slow upload speeds

tomc38
Tutor

CM1000v2 Slow upload speeds

I was wondering if anyone could help me out with my CM1000v2 modem. I am getting super slow upload speeds (2-5mbps when I pay for 50) and  my ISP is saying its my problem and they dont see any issues. I know very little about networking so I was hoping someone could look at the cable connection and tell me if there is anything wrong here. Thanks!

 

<tabindex=-1>Startup Procedure</tabindex=-1>
ProcedureStatusComment
Acquire Downstream Channel801000000 HzLocked
Connectivity StateOKOperational
Boot StateOKOperational
SecurityDisabledDisabled
IP Provisioning ModeHonor MDDIPv4 only

<tabindex=-1>Downstream Bonded Channels (Partial Service)</tabindex=-1>
ChannelLock StatusModulationChannel IDFrequencyPowerSNR / MERUnerrored CodewordsCorrectable CodewordsUncorrectable Codewords
1LockedQAM25623801000000 Hz-8.0 dBmV39.6 dB23644045612147
2LockedQAM2561669000000 Hz-2.5 dBmV41.6 dB23538803210143
3LockedQAM2562675000000 Hz-3.9 dBmV40.9 dB23539178410635
4LockedQAM2563681000000 Hz-6.0 dBmV40.4 dB2353952449241
5LockedQAM2564687000000 Hz-7.7 dBmV39.5 dB23539899911139
6LockedQAM2565693000000 Hz-7.9 dBmV39.4 dB23540261612851
7LockedQAM2566699000000 Hz-7.4 dBmV39.6 dB23540629411053
8LockedQAM2567705000000 Hz-7.0 dBmV39.8 dB23541010712542
9LockedQAM2568711000000 Hz-7.2 dBmV39.8 dB23541396111951
10LockedQAM2569717000000 Hz-7.6 dBmV39.5 dB23541755410543
11LockedQAM25610723000000 Hz-7.7 dBmV39.6 dB23541963411839
12LockedQAM25611729000000 Hz-7.3 dBmV39.7 dB23542321812542
13LockedQAM25612735000000 Hz-6.4 dBmV40.3 dB2354266499836
14LockedQAM25613741000000 Hz-5.4 dBmV40.7 dB2354306989943
15LockedQAM25614747000000 Hz-4.8 dBmV40.9 dB2354343949643
16LockedQAM25615753000000 Hz-4.8 dBmV41.0 dB23543850211638
17LockedQAM25616759000000 Hz-4.7 dBmV41.1 dB2354422908437
18LockedQAM25617765000000 Hz-5.4 dBmV40.7 dB2354458318541
19LockedQAM25618771000000 Hz-6.6 dBmV40.1 dB23544952110539
20LockedQAM25619777000000 Hz-7.4 dBmV39.8 dB23545303513640
21LockedQAM25620783000000 Hz-7.1 dBmV39.9 dB23546037710445
22LockedQAM25621789000000 Hz-7.1 dBmV40.0 dB23547664711141
23LockedQAM25622795000000 Hz-7.5 dBmV39.8 dB23546750412743
24LockedQAM25624807000000 Hz-8.1 dBmV39.6 dB23547226211943
25Not LockedUnknown00 Hz0.0 dBmV0.0 dB000
26Not LockedUnknown00 Hz0.0 dBmV0.0 dB000
27Not LockedUnknown00 Hz0.0 dBmV0.0 dB000
28Not LockedUnknown00 Hz0.0 dBmV0.0 dB000
29Not LockedUnknown00 Hz0.0 dBmV0.0 dB000
30Not LockedUnknown00 Hz0.0 dBmV0.0 dB000
31Not LockedUnknown00 Hz0.0 dBmV0.0 dB000
32Not LockedUnknown00 Hz0.0 dBmV0.0 dB000

<tabindex=-1>Upstream Bonded Channels</tabindex=-1>
ChannelLock StatusModulationChannel IDFrequencyPower
1LockedATDMA136800000 Hz45.0 dBmV
2LockedATDMA230400000 Hz45.8 dBmV
3LockedATDMA324000000 Hz44.5 dBmV
4LockedATDMA417600000 Hz45.0 dBmV
5Not LockedUnknown00 Hz0.0 dBmV
6Not LockedUnknown00 Hz0.0 dBmV
7Not LockedUnknown00 Hz0.0 dBmV
8Not LockedUnknown00 Hz0.0 dBmV

<tabindex=-1>Downstream OFDM Channels</tabindex=-1>
ChannelLock StatusModulation / Profile IDChannel IDFrequencyPowerSNR / MERActive Subcarrier Number RangeUnerrored CodewordsCorrectable CodewordsUncorrectable Codewords
1Locked0, 1, 2, 3159484000000 Hz0.3 dBmV0.0 dB0 ~ 4095000
2Locked0, 1, 2, 3160831000000 Hz-6.7 dBmV38.8 dB3176 ~ 50151184644672611594133

<tabindex=-1>Upstream OFDMA Channels</tabindex=-1>
ChannelLock StatusModulation / Profile IDChannel IDFrequencyPower
1Not LockedUnknown00 Hz0 dBmV
2Not LockedUnknown00 Hz0 dBmV

Current System Time: Thu Mar 16 14:38:46 2023
System Up Time: 1:27:02
Message 1 of 6

Accepted Solutions
plemans
Guru

Re: CM1000v2 Slow upload speeds

ISP's fight not to come out. 

Its their main goal in life is to make money off existing infrastructure without having to do maintenence on it. 

You have errors (the codewords) and t3/t4 errors. They indicate a connection issue with the isp. 

So if you're directly connected to the line coming in and you know that end connector is good, it doesn't leave much that could be the problems. It could always be the modem so thats the chance you take but the errors/logs indicate the line. 

View solution in original post

Message 5 of 6

All Replies
tomc38
Tutor

Re: CM1000v2 Slow upload speeds

Sorry I just realized I posted this under routers and not modems and I cant figure out how to change it. Here is the log too.

 

TimePriorityDescription
2023-03-16, 18:12:05Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
2023-03-16, 18:08:21Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
2023-03-16, 17:18:11Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
2023-03-16, 17:12:58Notice (6)CM-STATUS message sent. Event Type Code: 1; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
2023-03-16, 17:12:42Warning (5)MDD message timeout;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
2023-03-16, 17:12:37Notice (6)CM-STATUS message sent. Event Type Code: 21; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
2023-03-16, 17:12:29Warning (5)Dynamic Range Window violation
2023-03-16, 17:12:29Warning (5)RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
2023-03-16, 17:12:28Warning (5)REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
2023-03-16, 17:12:28Warning (5)RCS Partial Service;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
2023-03-16, 17:12:23Notice (6)DS profile assignment change. DS Chan ID: 33; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
2023-03-16, 17:12:22Notice (6)DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
2023-03-16, 17:12:18Notice (6)TLV-11 - unrecognized OID;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
Time Not EstablishedWarning (5)DHCP WARNING - Non-critical field invalid in response ;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
Time Not EstablishedCritical (3)DHCP FAILED - Discover sent, no offer received;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
Time Not EstablishedNotice (6)Honoring MDD; IP provisioning mode = IPv4
Time Not EstablishedCritical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
Time Not EstablishedCritical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
2023-03-06, 16:48:06Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
Time Not EstablishedCritical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
2023-03-06, 16:47:04Critical (3)Resetting the cable modem due to docsDevResetNow
2023-03-06, 16:35:59Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
Time Not EstablishedCritical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
2023-03-06, 16:18:07Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
2023-03-06, 16:17:58Critical (3)No Ranging Response received - T3 time-out;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
2023-03-06, 16:17:37Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
2023-03-06, 16:17:28Critical (3)REG-RSP - invalid format or not recognized;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
2023-03-06, 16:17:28Critical (3)REG RSP not received;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
Time Not EstablishedCritical (3)DHCP FAILED - Request sent, No response;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
Time Not EstablishedCritical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
2023-02-18, 14:30:25Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
2023-02-17, 17:01:17Critical (3)No Ranging Response received - T3 time-out;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
2023-02-17, 17:01:15Critical (3)SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
2023-02-17, 17:01:12Critical (3)No Ranging Response received - T3 time-out;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
2023-02-17, 17:01:11Critical (3)SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
2023-02-17, 17:00:35Critical (3)No Ranging Response received - T3 time-out;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
2023-02-17, 17:00:25Critical (3)SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
Time Not EstablishedCritical (3)SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
2023-01-23, 23:39:41Critical (3)No Ranging Response received - T3 time-out;CM-MAC=9c:c9:eb:96:8e:08;CMTS-MAC=24:7e:12:f1:19:d2;CM-QOS=1.1;CM-VER=3.1;
2023-01-23, 23:39:34Critical (3)TFTP Request Retries exceeded, CM unable to register
Message 2 of 6
plemans
Guru

Re: CM1000v2 Slow upload speeds

Your logs and cable connections page are indicating line issues. 

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.
If you can, simply connect the modem right where the coax comes into the home. This prevents wiring in the home from being the issue. And some ISP’s charge if the wiring issue is in the home. So this helps prevent this.

Message 3 of 6
tomc38
Tutor

Re: CM1000v2 Slow upload speeds

Thanks for the response. Is there anything specific I can point out to my ISP that indicate its a line issue. I am having a difficult time even trying to get someone to come to the house for testing because they say everything looks fine and since I dont rent their modem they just blame the one I own. My current setup is very simple and the modem is connected right where the cable comes into the house. There is a box on the outside of the house where the line from the street goes into a connector and then the cable running out of the connector goes into the wall outlet that the modem is connected to.

 

I have also been wondering if weather could be the cause. Both days I have had issues have been 2 days after a snow storm when things started melting. Maybe there is moisture getting in somewhere? The box on my house seems to be totally dry. The first time the issue occurred it resolved itself the next day but now a week later its back.

Message 4 of 6
plemans
Guru

Re: CM1000v2 Slow upload speeds

ISP's fight not to come out. 

Its their main goal in life is to make money off existing infrastructure without having to do maintenence on it. 

You have errors (the codewords) and t3/t4 errors. They indicate a connection issue with the isp. 

So if you're directly connected to the line coming in and you know that end connector is good, it doesn't leave much that could be the problems. It could always be the modem so thats the chance you take but the errors/logs indicate the line. 

Message 5 of 6
tomc38
Tutor

Re: CM1000v2 Slow upload speeds

Thanks for your help, I appreciate it!

Message 6 of 6
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