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Forum Discussion

spritesaga's avatar
spritesaga
Aspirant
May 09, 2020

CM1200 Amber Upstream Light and Occasionally Blinking Downstream Light

Hey all,   I have a brand new Netgear CM1200 modem and Netgear R7000 router. My ISP is Spectrum.   On my first day, my upstream light was blinking, but after restarting my modem, now I have a con...
vkdelta's avatar
vkdelta
NETGEAR Employee Retired
Jul 27, 2020

last screenshot showed it is partial service.

 

Need new screenshot for connection table + event Logs

spritesaga's avatar
spritesaga
Aspirant
Jul 28, 2020

Here you go. Although it should be noted I'm not having any major issues right now.

 

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

Procedure Status Comment
Acquire Downstream Channel300000000 HzLocked
Connectivity StateOKOperational
Boot StateOKOperational
SecurityEnabledBPI+
IP Provisioning ModeHonor MDDhonorMdd(4)
 

Downstream Bonded Channels (Partial Service)

Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
1LockedQAM2561585000000 Hz9.6 dBmV42.4 dB00
2LockedQAM2562591000000 Hz9.7 dBmV42.5 dB00
3LockedQAM2563597000000 Hz9.8 dBmV42.4 dB00
4LockedQAM2564603000000 Hz9.8 dBmV42.4 dB00
5LockedQAM2565609000000 Hz9.8 dBmV42.4 dB00
6LockedQAM2566615000000 Hz9.8 dBmV42.4 dB00
7LockedQAM2567621000000 Hz9.8 dBmV42.3 dB00
8LockedQAM2568627000000 Hz9.7 dBmV42.3 dB00
9LockedQAM2569633000000 Hz9.2 dBmV42 dB00
10LockedQAM25610639000000 Hz7.7 dBmV41.5 dB00
11LockedQAM25611645000000 Hz7.5 dBmV41.4 dB00
12LockedQAM25612651000000 Hz8.4 dBmV41.7 dB00
13LockedQAM25613657000000 Hz9 dBmV41.8 dB00
14LockedQAM25614663000000 Hz9.5 dBmV42 dB00
15LockedQAM25615669000000 Hz9.7 dBmV41.9 dB00
16LockedQAM25616675000000 Hz10.1 dBmV41.5 dB00
17LockedQAM25617681000000 Hz9.9 dBmV42 dB00
18LockedQAM25618687000000 Hz9.3 dBmV41.8 dB00
19LockedQAM25619693000000 Hz9.5 dBmV41.8 dB00
20LockedQAM25620699000000 Hz9.8 dBmV41.8 dB00
21LockedQAM25621705000000 Hz9.6 dBmV41.8 dB00
22LockedQAM25622711000000 Hz9.1 dBmV41.6 dB00
23LockedQAM25623717000000 Hz8.5 dBmV41.4 dB00
24LockedQAM25624723000000 Hz8.5 dBmV41.2 dB00
25LockedQAM25625729000000 Hz9.6 dBmV41.6 dB00
26LockedQAM25626735000000 Hz10.2 dBmV41.8 dB00
27LockedQAM25627741000000 Hz10.8 dBmV41.9 dB00
28LockedQAM25628747000000 Hz11.2 dBmV42 dB00
29LockedQAM25629753000000 Hz11.5 dBmV42.1 dB00
30LockedQAM25630759000000 Hz11.3 dBmV42.1 dB00
31LockedQAM25631765000000 Hz10.4 dBmV41.9 dB00
32Not LockedUnknown00 Hz0.0 dBmV0.0 dB00
 

Upstream Bonded Channels (Partial Service)

Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1LockedATDMA15120 Ksym/sec17400000 Hz43.3 dBmV
2Not LockedUnknown20 Ksym/sec17400000 Hz0.0 dBmV
3Not LockedUnknown30 Ksym/sec23800000 Hz0.0 dBmV
4Not LockedUnknown40 Ksym/sec36600000 Hz0.0 dBmV
5Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
6Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
7Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
8Not LockedUnknown00 Ksym/sec0 Hz0.0 dBmV
 

Downstream OFDM Channels

Channel Lock
Status 		Modulation /
Profile ID 		Channel
ID 		Frequency Power SNR /
MER 		Active Subcarrier
Number Range 		Unerrored
Codewords 		Correctable
Codewords 		Uncorrectable
Codewords
1Locked0 ,1 ,2159300000000 Hz7.8 dBmV42.5 dB1108 ~ 29871314421338911298810490
2Not Locked000 Hz0 dBmV0.0 dB0 ~ 4095000
 

Upstream OFDMA Channels

Channel Lock Status Modulation / Profile ID Channel ID Frequency Power
1Not Locked000 Hz0 dBmV
2Not Locked000 Hz

0 dBmV

 

 

 

 
 
 
Time Priority Description
Mon Jul 27 20:13:36 2020Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=08:36:c9:3d:f1:08;CMTS-MAC=00:6c:bc:b8:34:ea;CM-QOS=1.1;CM-VER=3.1;
Mon Jul 27 20:13:36 2020Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=08:36:c9:3d:f1:08;CMTS-MAC=00:6c:bc:b8:34:ea;CM-QOS=1.1;CM-VER=3.1;
Mon Jul 27 20:13:26 2020Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=08:36:c9:3d:f1:08;CMTS-MAC=00:6c:bc:b8:34:ea;CM-QOS=1.1;CM-VER=3.1;
Mon Jul 27 20:12:56 2020Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=08:36:c9:3d:f1:08;CMTS-MAC=00:6c:bc:b8:34:ea;CM-QOS=1.1;CM-VER=3.1;
Mon Jul 27 20:12:46 2020Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=08:36:c9:3d:f1:08;CMTS-MAC=00:6c:bc:b8:34:ea;CM-QOS=1.1;CM-VER=3.1;
Mon Jul 27 20:12:36 2020Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=08:36:c9:3d:f1:08;CMTS-MAC=00:6c:bc:b8:34:ea;CM-QOS=1.1;CM-VER=3.1;
Mon Jul 27 20:12:16 2020Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=08:36:c9:3d:f1:08;CMTS-MAC=00:6c:bc:b8:34:ea;CM-QOS=1.1;CM-VER=3.1;
Mon Jul 27 20:12:16 2020Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=08:36:c9:3d:f1:08;CMTS-MAC=00:6c:bc:b8:34:ea;CM-QOS=1.1;CM-VER=3.1;
Mon Jul 27 20:12:06 2020Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=08:36:c9:3d:f1:08;CMTS-MAC=00:6c:bc:b8:34:ea;CM-QOS=1.1;CM-VER=3.1;
Mon Jul 27 20:11:36 2020Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=08:36:c9:3d:f1:08;CMTS-MAC=00:6c:bc:b8:34:ea;CM-QOS=1.1;CM-VER=3.1;
Mon Jul 27 20:11:26 2020Critical (3)Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=08:36:c9:3d:f1:08;CMTS-MAC=00:6c:bc:b8:34:ea;CM-QOS=1.1;CM-VER=3.1;
Mon Jul 27 20:11:16 2020Critical (3)Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=08:36:c9:3d:f1:08;CMTS-MAC=00:6c:bc:b8:34:ea;CM-QOS=1.1;CM-VER=3.1;
  • vkdelta's avatar
    vkdelta
    NETGEAR Employee Retired
    Jul 30, 2020

    It is still partial service though.

  • spritesaga's avatar
    spritesaga
    Aspirant
    Jul 30, 2020

    Correct, it is still partial service. But it works :)

  • kryptoknight's avatar
    kryptoknight
    Tutor
    Jul 31, 2020

    So I went ahead with the purchase of the CM1200 (again) to replace the Spectrum stock modem (citron).  First day was was normal - CM1200 hooked up to the RAX200.  Recently switched to the gigabit plan with Spectrum.  Speeds tested were good with multiple tests - wasn't really expecting to achieve the full 1gbps download speed but did get substantial improvement over the stock modem.  Approximately 24 hours later, the upload light starting blinking on the CM1200.  Checked cable connection status before and after light blinking and they are the same.  No loss of connection and degradation in speeds for both download and upload.  So I seem to be in the same situation - upload light blinking green on the cm1200 but yet no connection issues.  Just wondering why it's blinking though??   I got 3 upstream bonded channels locked and 1 upstream ofdm channel locked.  See attached for screenshots. of the connected channels.  I have not rebooted the modem yet since the blinking of the light.  Will see what happens on its own in a few days.  Any Netgear folks reading through these community entries??  Are you looking into this??

     

     

     

     

  • FURRYe38's avatar
    FURRYe38
    Guru - Experienced User
    Aug 01, 2020

    Do does the Hitron modem do the same thing with the blinking US led? 

    kryptoknight wrote:

    So I went ahead with the purchase of the CM1200 (again) to replace the Spectrum stock modem (citron).  First day was was normal - CM1200 hooked up to the RAX200.  Recently switched to the gigabit plan with Spectrum.  Speeds tested were good with multiple tests - wasn't really expecting to achieve the full 1gbps download speed but did get substantial improvement over the stock modem.  Approximately 24 hours later, the upload light starting blinking on the CM1200.  Checked cable connection status before and after light blinking and they are the same.  No loss of connection and degradation in speeds for both download and upload.  So I seem to be in the same situation - upload light blinking green on the cm1200 but yet no connection issues.  Just wondering why it's blinking though??   I got 3 upstream bonded channels locked and 1 upstream ofdm channel locked.  See attached for screenshots. of the connected channels.  I have not rebooted the modem yet since the blinking of the light.  Will see what happens on its own in a few days.  Any Netgear folks reading through these community entries??  Are you looking into this??

     

     

     

     

     

  • FURRYe38's avatar
    FURRYe38
    Guru - Experienced User
    Aug 01, 2020

    Something to keep in contact with NG with then.