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2 Messages

Fri, Jan 1, 2021 6:00 PM

Netgear CM1000v2 bandwidth dropoff with Gigabit xfinity service

Bandwidth drops with Gigabit service.

 

Modem: Netgear CM1000v2 

Firmware: V7.01.01

 

TimePriorityDescription
2021-01-01, 20:27:22Notice (6)CM-STATUS message sent. Event Type Code: 22; Chan ID: 33; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=9c:c9:eb:92:0b:f0;CMTS-MAC=00:01:5c:76:2c:59;CM-QOS=1.1;CM-VER=3.1;
2021-01-01, 20:26:54Notice (6)CM-STATUS message sent. Event Type Code: 20; Chan ID: 33; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=9c:c9:eb:92:0b:f0;CMTS-MAC=00:01:5c:76:2c:59;CM-QOS=1.1;CM-VER=3.1;
2021-01-01, 20:26:36Notice (6)CM-STATUS message sent. Event Type Code: 22; Chan ID: 33; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=9c:c9:eb:92:0b:f0;CMTS-MAC=00:01:5c:76:2c:59;CM-QOS=1.1;CM-VER=3.1;
2021-01-01, 20:26:08Notice (6)CM-STATUS message sent. Event Type Code: 20; Chan ID: 33; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=9c:c9:eb:92:0b:f0;CMTS-MAC=00:01:5c:76:2c:59;CM-QOS=1.1;CM-VER=3.1;
2021-01-01, 20:25:21Notice (6)CM-STATUS message sent. Event Type Code: 22; Chan ID: 33; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=9c:c9:eb:92:0b:f0;CMTS-MAC=00:01:5c:76:2c:59;CM-QOS=1.1;CM-VER=3.1;
2021-01-01, 20:24:51Notice (6)CM-STATUS message sent. Event Type Code: 20; Chan ID: 33; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=9c:c9:eb:92:0b:f0;CMTS-MAC=00:01:5c:76:2c:59;CM-QOS=1.1;CM-VER=3.1;
2021-01-01, 20:23:58Notice (6)CM-STATUS message sent. Event Type Code: 22; Chan ID: 33; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=9c:c9:eb:92:0b:f0;CMTS-MAC=00:01:5c:76:2c:59;CM-QOS=1.1;CM-VER=3.1;
2021-01-01, 20:23:33Notice (6)CM-STATUS message sent. Event Type Code: 20; Chan ID: 33; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=9c:c9:eb:92:0b:f0;CMTS-MAC=00:01:5c:76:2c:59;CM-QOS=1.1;CM-VER=3.1;
2021-01-01, 20:23:17Notice (6)CM-STATUS message sent. Event Type Code: 22; Chan ID: 33; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=9c:c9:eb:92:0b:f0;CMTS-MAC=00:01:5c:76:2c:59;CM-QOS=1.1;CM-VER=3.1;
2021-01-01, 20:23:17Notice (6)CM-STATUS message sent. Event Type Code: 24; Chan ID: 33; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1.;CM-MAC=9c:c9:eb:92:0b:f0;CMTS-MAC=00:01:5c:76:2c:59;CM-QOS=1.1;CM-VER=3.1;
2021-01-01, 20:22:49Notice (6)CM-STATUS message sent. Event Type Code: 20; Chan ID: 33; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=9c:c9:eb:92:0b:f0;CMTS-MAC=00:01:5c:76:2c:59;CM-QOS=1.1;CM-VER=3.1;
2021-01-01, 20:22:22Notice (6)CM-STATUS message sent. Event Type Code: 16; Chan ID: 33; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 1 2 3.;CM-MAC=9c:c9:eb:92:0b:f0;CMTS-MAC=00:01:5c:76:2c:59;CM-QOS=1.1;CM-VER=3.1;
2021-01-01, 20:22:11Notice (6)CM-STATUS message sent. Event Type Code: 22; Chan ID: 33; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=9c:c9:eb:92:0b:f0;CMTS-MAC=00:01:5c:76:2c:59;CM-QOS=1.1;CM-VER=3.1;
2021-01-01, 20:21:51Notice (6)CM-STATUS message sent. Event Type Code: 16; Chan ID: 33; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2 3.;CM-MAC=9c:c9:eb:92:0b:f0;CMTS-MAC=00:01:5c:76:2c:59;CM-QOS=1.1;CM-VER=3.1;
2021-01-01, 20:21:46Notice (6)CM-STATUS message sent. Event Type Code: 20; Chan ID: 33; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=9c:c9:eb:92:0b:f0;CMTS-MAC=00:01:5c:76:2c:59;CM-QOS=1.1;CM-VER=3.1;
2021-01-01, 20:21:46Notice (6)CM-STATUS message sent. Event Type Code: 16; Chan ID: 33; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 3.;CM-MAC=9c:c9:eb:92:0b:f0;CMTS-MAC=00:01:5c:76:2c:59;CM-QOS=1.1;CM-VER=3.1;
2021-01-01, 20:21:36Notice (6)DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=9c:c9:eb:92:0b:f0;CMTS-MAC=00:01:5c:76:2c:59;CM-QOS=1.1;CM-VER=3.1;
Time Not EstablishedNotice (6)Honoring MDD; IP provisioning mode = IPv6
Time Not EstablishedCritical (3)No Ranging Response received - T3 time-out;CM-MAC=9c:c9:eb:92:0b:f0;CMTS-MAC=00:01:5c:76:2c:59;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:92:0b:f0;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Time Not EstablishedCritical (3)No Ranging Response received - T3 time-out;CM-MAC=9c:c9:eb:92:0b:f0;CMTS-MAC=00:01:5c:76:2c:59;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:92:0b:f0;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Time Not EstablishedCritical (3)No Ranging Response received - T3 time-out;CM-MAC=9c:c9:eb:92:0b:f0;CMTS-MAC=00:01:5c:76:2c:59;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:92:0b:f0;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Time Not EstablishedCritical (3)No Ranging Response received - T3 time-out;CM-MAC=9c:c9:eb:92:0b:f0;CMTS-MAC=00:01:5c:76:2c:59;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:92:0b:f0;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Time Not EstablishedCritical (3)No Ranging Response received - T3 time-out;CM-MAC=9c:c9:eb:92:0b:f0;CMTS-MAC=00:01:5c:76:2c:59;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:92:0b:f0;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Time Not EstablishedCritical (3)No Ranging Response received - T3 time-out;CM-MAC=9c:c9:eb:92:0b:f0;CMTS-MAC=00:01:5c:76:2c:59;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:92:0b:f0;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;

Responses

New Poster

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2 Messages

6 m ago

Frequency start Value
This field below allows you to modify the frequency the cable modem start with its scan during initialization and registration. Enter the new start frequency and restart the cable modem for it to take effect.
Starting Frequency

Startup Procedure

ProcedureStatusComment
Acquire Downstream Channel507000000 HzLocked
Connectivity StateOKOperational
Boot StateOKOperational
SecurityEnableBPI+
IP Provisioning ModeHonor MDDIPv6 only

Downstream Bonded Channels (Partial Service)

ChannelLock StatusModulationChannel IDFrequencyPowerSNR / MERUnerrored CodewordsCorrectable CodewordsUncorrectable Codewords
1LockedQAM2565507000000 Hz-7.6 dBmV39.6 dB44829677120
2LockedQAM2562483000000 Hz-7.9 dBmV43.2 dB4366660650
3LockedQAM2563489000000 Hz-8.0 dBmV43.0 dB4367036160
4LockedQAM2564495000000 Hz-8.6 dBmV41.6 dB43673963130
5LockedQAM2566513000000 Hz-7.6 dBmV41.1 dB4367759260
6LockedQAM2567519000000 Hz-8.1 dBmV33.3 dB43681061170
7LockedQAM2568525000000 Hz-8.0 dBmV31.5 dB43685278200
8LockedQAM2569531000000 Hz-7.7 dBmV33.3 dB4368927860
9LockedQAM25610537000000 Hz-8.0 dBmV35.0 dB4369256060
10LockedQAM25611543000000 Hz-8.2 dBmV40.8 dB4369650530
11LockedQAM25612549000000 Hz-8.4 dBmV42.7 dB4370012570
12LockedQAM25613555000000 Hz-8.2 dBmV43.0 dB4370384050
13LockedQAM25614561000000 Hz-8.5 dBmV42.7 dB4370780540
14LockedQAM25615567000000 Hz-8.4 dBmV42.4 dB4371163130
15LockedQAM25616573000000 Hz-9.0 dBmV42.2 dB4371520580
16LockedQAM25617579000000 Hz-8.9 dBmV42.2 dB4371882650
17LockedQAM25618585000000 Hz-8.8 dBmV39.0 dB4372245570
18LockedQAM25619591000000 Hz-9.3 dBmV38.0 dB43726544100
19LockedQAM25620597000000 Hz-9.2 dBmV36.5 dB4373008560
20LockedQAM25621603000000 Hz-9.1 dBmV40.5 dB4373381570
21LockedQAM25622609000000 Hz-8.3 dBmV42.6 dB4373766090
22LockedQAM25623615000000 Hz-9.5 dBmV41.8 dB4374130260
23LockedQAM25624621000000 Hz-9.6 dBmV38.1 dB437446323790
24LockedQAM25625627000000 Hz-8.9 dBmV33.0 dB431374666065654877
25LockedQAM25626633000000 Hz-9.5 dBmV38.9 dB437356321740271
26LockedQAM25627639000000 Hz-9.5 dBmV39.8 dB435272222272542628
27LockedQAM25628645000000 Hz-9.1 dBmV32.1 dB43596848162913690
28LockedQAM25629651000000 Hz-8.4 dBmV41.9 dB4376424970
29LockedQAM25630657000000 Hz-9.7 dBmV41.2 dB4376795960
30LockedQAM25631663000000 Hz-10.0 dBmV41.1 dB43769119140
31LockedQAM25632669000000 Hz-10.1 dBmV41.0 dB4376084017487283
32Not LockedUnknown00 Hz0.0 dBmV0.0 dB000

Upstream Bonded Channels

ChannelLock StatusModulationChannel IDFrequencyPower
1LockedATDMA135600000 Hz51.8 dBmV
2LockedATDMA229200000 Hz52.5 dBmV
3LockedATDMA322800000 Hz52.3 dBmV
4LockedATDMA416400000 Hz52.3 dBmV
5LockedATDMA540400000 Hz50.5 dBmV
6Not LockedUnknown00 Hz0.0 dBmV
7Not LockedUnknown00 Hz0.0 dBmV
8Not LockedUnknown00 Hz0.0 dBmV

Downstream OFDM Channels

ChannelLock StatusModulation / Profile IDChannel IDFrequencyPowerSNR / MERActive Subcarrier Number RangeUnerrored CodewordsCorrectable CodewordsUncorrectable Codewords
1Locked0, 1, 2, 333722000000 Hz-8.6 dBmV26.5 dB1228 ~ 28671682920160272177795
2Not Locked000 Hz-8.7 dBmV0.0 dB0 ~ 4095000

Upstream OFDMA Channels

ChannelLock StatusModulation / Profile IDChannel IDFrequencyPower
1Not LockedUnknown00 Hz0 dBmV
2Not LockedUnknown00 Hz0 dBmV

Current System Time: Fri Jan 01 20:37:40 2021System Up Time: 0:16:48

EG

Expert

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87.2K Messages

6 m ago

Oth the upstream power and the downstream power are borderline and they may be intermittently fluctuating even farther to out of spec levels. That can cause random disconnects, spontaneous re-booting of the modem, speed, packet loss, latency problems, and the un-bonding of channels.

In a self troubleshooting effort to try to obtain better connectivity / more wiggle room, check to see if there are there any excess/unneeded coax cable splitters in the line leading to the modem that can be eliminated/re-configured. Any splitters that remain should be high quality and cable rated for 5-1002 MHz, bi-directional, and no gold colored garbage types like GE, RadioShack, RCA, Philips, Leviton, Magnavox, and Rocketfish from big box stores like Home Depot, Lowes, Target, Wal-Mart etc. Splitters should be swapped with known to be good / new ones to test

If there aren't any unneeded splitters that can be eliminated and if your coax wiring setup can't be reconfigured so that there is a single two way splitter connected directly off of the drop from the street/pole with one port feeding the modem and the other port feeding the rest of the house/equipment with additional splits as needed, and you've checked all the wiring and fittings for integrity and tightness and refresh them by taking them apart then check for and clean off any corrosion / oxidation on the center wire and put them back together again, then perhaps it's best to book a tech visit to investigate and correct.

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