NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
CM1000 RNG-RSP Issues
Since the new firmware update of V3.01.02 that was pushed out to Comcast I have been receiving "RNG-RSP CCAP Commanded Power in Excess of 6db Below the Value Correstponding to the Top of the DRW" err...
Just an update from my earlier post: Same issue, same firmware version with no update. I'm only typing this now because I've been having to reset my modem several times a day (at least) to have any decent throughput (I pay for 150MB) until it craps out again and takes my internet speed down to a drip-drip rate.
I would really like to see someone in an official capacity comment on this from Netgear, instead of this "community" just standing around scratching our heads and talking into a void. There is someone somewhere over in Netgear engineering who knows exactly what types of things might trigger this issue. That information, in turn, could then be used to inform Comcast techs on how to fix it. Or Netgear themselves could issues a patch that would bring back some reasonable stability to these units until further research can be done to correct it. Perhaps they could add a software option to enable/disable something that would make the modem operate more like my older Netgear modems did.
some of your downstreams are a little high they should be -7 to +7 dBmV. for the best connection.
DarrneM
I just started receiving the same errors and issues, reboots and disconnects multiple times a day. Just started yesterday.. real bummer :( Otherwise I've really enjoyed the modem. Here are some of my stats if it will help.. I've posted on Xfinity as well, waiting for some feedback.
2017-12-23, 08:40:56
Warning (5)
REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=xx:xx:xx:xx:xx:10;CMTS-MAC=xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Time Not Established
Notice (6)
Honoring MDD; IP provisioning mode = IPv6
Time Not Established
Critical (3)
SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=xx:xx:xx:xx:xx:10;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Time Not Established
Critical (3)
Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=xx:xx:xx:xx:xx:10;CMTS-MAC=xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Time Not Established
Critical (3)
Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:10;CMTS-MAC=xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Time Not Established
Critical (3)
SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=xx:xx:xx:xx:xx:10;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
2017-12-22, 17:53:40
Critical (3)
Resetting the cable modem due to docsDevResetNow
2017-12-22, 17:49:50
Critical (3)
Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:10;CMTS-MAC=xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Time Not Established
Critical (3)
SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=xx:xx:xx:xx:xx:10;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
2017-12-22, 14:14:06
Critical (3)
Resetting the cable modem due to docsDevResetNow
2017-12-22, 14:11:15
Critical (3)
Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:10;CMTS-MAC=xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
2017-12-22, 14:07:01
Critical (3)
REG RSP not received;CM-MAC=xx:xx:xx:xx:xx:10;CMTS-MAC=xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Time Not Established
Critical (3)
SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=xx:xx:xx:xx:xx:10;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
2017-12-22, 13:23:26
Critical (3)
REG RSP not received;CM-MAC=xx:xx:xx:xx:xx:10;CMTS-MAC=xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Time Not Established
Critical (3)
SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=xx:xx:xx:xx:xx:10;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
2017-12-22, 07:11:59
Critical (3)
REG RSP not received;CM-MAC=xx:xx:xx:xx:xx:10;CMTS-MAC=xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Time Not Established
Critical (3)
No Ranging Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:10;CMTS-MAC=xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Time Not Established
Critical (3)
SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=xx:xx:xx:xx:xx:10;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
2017-12-22, 07:08:13
Critical (3)
REG RSP not received;CM-MAC=xx:xx:xx:xx:xx:10;CMTS-MAC=xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
2017-12-22, 07:06:49
Critical (3)
Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:10;CMTS-MAC=xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
2017-12-22, 07:05:34
Critical (3)
REG RSP not received;CM-MAC=xx:xx:xx:xx:xx:10;CMTS-MAC=xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
2017-12-22, 07:04:01
Critical (3)
REG RSP not received;CM-MAC=xx:xx:xx:xx:xx:10;CMTS-MAC=xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Time Not Established
Critical (3)
DHCP failed - DHCP Solicit sent, No DHCP Advertise received;CM-MAC=xx:xx:xx:xx:xx:10;CMTS-MAC=xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Time Not Established
Critical (3)
Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:10;CMTS-MAC=xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Time Not Established
Critical (3)
DHCP failed - DHCP Solicit sent, No DHCP Advertise received;CM-MAC=xx:xx:xx:xx:xx:10;CMTS-MAC=xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Note: I removed the MAC addresses, but the CM-MAC and CMTS-MAC do not match.
Latest Log after a factory reset on the modem:
2017-12-23, 09:01:46
Critical (3)
Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx;CMTS-MAC=00:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
2017-12-23, 09:00:19
Notice (6)
CM-STATUS message sent. Event Type Code: 3; Chan ID: N/A; DSID: E; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=xx:xx:xx:xx:xx;CMTS-MAC=00:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
2017-12-23, 09:00:19
Warning (5)
Unicast DSID PSN startup error
2017-12-23, 08:59:49
Warning (5)
REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=xx:xx:xx:xx:xx;CMTS-MAC=00:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Time Not Established
Notice (6)
Honoring MDD; IP provisioning mode = IPv6
Time Not Established
Critical (3)
SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=xx:xx:xx:xx:xx;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Time Not Established
Critical (3)
No Ranging Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx;CMTS-MAC=00:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.1;
Time Not Established
Critical (3)
SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=xx:xx:xx:xx:xx;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
Here are my current connection stats:
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 <tabindex=-1>Startup Procedure
Procedure Status Comment Acquire Downstream Channel 729000000 Hz Locked Connectivity State OK Operational Boot State OK Operational Security Enable BPI+ IP Provisioning Mode Honor MDD IPv6 only <tabindex=-1>Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR / MER Unerrored Codewords Correctable Codewords Uncorrectable Codewords 1 Locked QAM256 21 729000000 Hz 6.2 dBmV 40.3 dB 48754675 0 0 2 Locked QAM256 1 609000000 Hz 8.1 dBmV 41.0 dB 47253420 0 0 3 Locked QAM256 2 615000000 Hz 7.7 dBmV 40.9 dB 47261941 0 0 4 Locked QAM256 3 621000000 Hz 7.9 dBmV 41.0 dB 47271046 0 0 5 Locked QAM256 4 627000000 Hz 7.4 dBmV 40.9 dB 47280141 0 0 6 Locked QAM256 5 633000000 Hz 7.4 dBmV 40.6 dB 47285916 0 0 7 Locked QAM256 6 639000000 Hz 7.2 dBmV 40.7 dB 47299161 0 0 8 Locked QAM256 7 645000000 Hz 7.1 dBmV 40.6 dB 47307951 0 0 9 Locked QAM256 8 651000000 Hz 6.9 dBmV 40.5 dB 47317712 0 0 10 Locked QAM256 9 657000000 Hz 6.9 dBmV 40.5 dB 47326996 0 0 11 Locked QAM256 10 663000000 Hz 6.9 dBmV 40.4 dB 47336669 0 0 12 Locked QAM256 11 669000000 Hz 7.0 dBmV 40.6 dB 47345598 0 0 13 Locked QAM256 12 675000000 Hz 7.1 dBmV 40.1 dB 47355716 0 0 14 Locked QAM256 13 681000000 Hz 6.9 dBmV 40.3 dB 47363949 0 0 15 Locked QAM256 14 687000000 Hz 7.2 dBmV 40.6 dB 47373438 0 0 16 Locked QAM256 15 693000000 Hz 6.9 dBmV 40.2 dB 47382707 0 0 17 Locked QAM256 16 699000000 Hz 6.8 dBmV 40.2 dB 47380079 0 0 18 Locked QAM256 17 705000000 Hz 6.7 dBmV 40.5 dB 47410399 0 0 19 Locked QAM256 18 711000000 Hz 6.4 dBmV 40.4 dB 47419980 0 0 20 Locked QAM256 19 717000000 Hz 6.2 dBmV 40.3 dB 47428801 0 0 21 Locked QAM256 20 723000000 Hz 5.9 dBmV 40.3 dB 47430581 0 0 22 Locked QAM256 22 735000000 Hz 5.5 dBmV 40.2 dB 47438250 0 0 23 Locked QAM256 23 741000000 Hz 5.9 dBmV 40.2 dB 47444370 0 0 24 Locked QAM256 24 747000000 Hz 5.3 dBmV 40.1 dB 47449904 0 0 25 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 26 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 27 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 28 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 29 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 30 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 31 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 32 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0 0 <tabindex=-1>Upstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power 1 Locked ATDMA 1 35800000 Hz 49.5 dBmV 2 Locked ATDMA 2 29400000 Hz 50.0 dBmV 3 Locked ATDMA 3 23000000 Hz 50.0 dBmV 4 Not Locked Unknown 0 0 Hz 0.0 dBmV 5 Not Locked Unknown 0 0 Hz 0.0 dBmV 6 Not Locked Unknown 0 0 Hz 0.0 dBmV 7 Not Locked Unknown 0 0 Hz 0.0 dBmV 8 Not Locked Unknown 0 0 Hz 0.0 dBmV <tabindex=-1>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 1 Not Locked Unknown 0 0 Hz 0 dBmV 0 dB 0 ~ 0 0 0 0 2 Not Locked Unknown 0 0 Hz 0 dBmV 0 dB 0 ~ 0 0 0 0 <tabindex=-1>Upstream OFDMA Channels
Channel Lock Status Modulation / Profile ID Channel ID Frequency Power 1 Not Locked Unknown 0 0 Hz 0 dBmV 2 Not Locked Unknown 0 0 Hz 0 dBmV Whooooa! All 3 upstream channels are at 50db. THAT my friend is your issue. CM is your Cable Modem. CMTS is the Cable Modem Termination System at the Cable Company. Your modem is SCREAMING to be heard by the CMTS. The normal range is 30db to 45db. You must have wiggle room. When your modem cannot be heard, it reboots.