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BigDataPhreak's avatar
BigDataPhreak
New Contributor
5 years ago

Downstream light never stops blinking blue "negotiating channels"

I have a Motorola SB8600 and the downstream light never stops blinking blue, which means "negotiating bonded channel(s)".

I have the modem on a single line with no splitters and nothing else is on the line.  Television is all antenna and separate.

All 32 QAM365 channels are locked.

Downstream QAM256 - 32 channels

  • Freq. (MHz) between 783.0 and 969.0
  • Pwr (dBmV) between 10.7 and 12.3
  • SRN (dB) between 42.6 and 44.1
  • Nearly no corrected

Single downstream OFDM PLC

  • Freq. (MHz) 300.0
  • Pwr (dBmV) -41.4 (yes negative)
  • SNR (dB) 0.0

Upstream Bonded - 5 SC-QAM channels

  • Symb. Rate (Ksym/sec) - 4 channels at 5120 and 1 at 2560
  • Freq. (MHz) between 12.9 and 36.9
  • Pwr (dBmV)

Latest Log (edited the MACs)

  Time    Priority    Description 
    Time Not Established   Critical (3)   SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=XX: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)   SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=XX: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:XX;CMTS-MAC=ZZ:ZZ:ZZ:ZZ:ZZ:ZZ;CM-QOS=1.1;CM-VER=3.1;
    Time Not Established   Critical (3)   DHCP FAILED - Discover sent, no offer received;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=ZZ:ZZ:ZZ:ZZ:ZZ:ZZ;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:XX;CMTS-MAC=ZZ:ZZ:ZZ:ZZ:ZZ:ZZ;CM-QOS=1.1;CM-VER=3.1;
    Time Not Established   Critical (3)   DHCP FAILED - Discover sent, no offer received;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=ZZ:ZZ:ZZ:ZZ:ZZ:ZZ;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:XX;CMTS-MAC=ZZ:ZZ:ZZ:ZZ:ZZ:ZZ;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:XX;CMTS-MAC=ZZ:ZZ:ZZ:ZZ:ZZ:ZZ;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:XX;CMTS-MAC=ZZ:ZZ:ZZ:ZZ:ZZ:ZZ;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:XX;CMTS-MAC=ZZ:ZZ:ZZ:ZZ:ZZ:ZZ;CM-QOS=1.1;CM-VER=3.1;
    11:59:34
Tue Oct 27 2020		   Critical (3)   No Ranging Response received - T3 time-out;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=ZZ:ZZ:ZZ:ZZ:ZZ:ZZ;CM-QOS=1.1;CM-VER=3.1;
    15:59:41
Fri Oct 30 2020		   Critical (3)   SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=ZZ:ZZ:ZZ:ZZ:ZZ:ZZ;CM-QOS=1.1;CM-VER=3.1;
    15:59:47
Fri Oct 30 2020		   Critical (3)   SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=ZZ:ZZ:ZZ:ZZ:ZZ:ZZ;CM-QOS=1.1;CM-VER=3.1;
    16:00:33
Fri Oct 30 2020		   Critical (3)   No Ranging Response received - T3 time-out;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=ZZ:ZZ:ZZ:ZZ:ZZ:ZZ;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: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:XX;CMTS-MAC=ZZ:ZZ:ZZ:ZZ:ZZ:ZZ;CM-QOS=1.1;CM-VER=3.1;
    Time Not Established   Notice (6)   Honoring MDD; IP provisioning mode = IPv4
    16:07:26
Fri Oct 30 2020		   Warning (5)   DHCP WARNING - Non-critical field invalid in response ;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=ZZ:ZZ:ZZ:ZZ:ZZ:ZZ;CM-QOS=1.1;CM-VER=3.1;
    16:07:27
Fri Oct 30 2020		   Notice (6)   TLV-11 - unrecognized OID;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=ZZ:ZZ:ZZ:ZZ:ZZ:ZZ;CM-QOS=1.1;CM-VER=3.1;
    16:07:31
Fri Oct 30 2020		   Notice (6)   DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=ZZ:ZZ:ZZ:ZZ:ZZ:ZZ;CM-QOS=1.1;CM-VER=3.1;
    16:07:35
Fri Oct 30 2020		   Warning (5)   REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=ZZ:ZZ:ZZ:ZZ:ZZ:ZZ;CM-QOS=1.1;CM-VER=3.1;
    16:07:37
Fri Oct 30 2020		   Warning (5)   RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=ZZ:ZZ:ZZ:ZZ:ZZ:ZZ;CM-QOS=1.1;CM-VER=3.1;
    16:07:37
Fri Oct 30 2020		   Warning (5)   Dynamic Range Window violation
    16:07:37
Fri Oct 30 2020		   Warning (5)   RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=ZZ:ZZ:ZZ:ZZ:ZZ:ZZ;CM-QOS=1.1;CM-VER=3.1;
    16:07:37
Fri Oct 30 2020		   Warning (5)   Dynamic Range Window violation
    16:07:37
Fri Oct 30 2020		   Warning (5)   RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=ZZ:ZZ:ZZ:ZZ:ZZ:ZZ;CM-QOS=1.1;CM-VER=3.1;
    16:07:37
Fri Oct 30 2020		   Warning (5)   Dynamic Range Window violation
    16:07:37
Fri Oct 30 2020		   Warning (5)   RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=ZZ:ZZ:ZZ:ZZ:ZZ:ZZ;CM-QOS=1.1;CM-VER=3.1;
    16:07:37
Fri Oct 30 2020		   Warning (5)   Dynamic Range Window violation
    16:07:53
Fri Oct 30 2020		   Warning (5)   MDD message timeout;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=ZZ:ZZ:ZZ:ZZ:ZZ:ZZ;CM-QOS=1.1;CM-VER=3.1;
    16:07:57
Fri Oct 30 2020		   Notice (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=XX:XX:XX:XX:XX:XX;CMTS-MAC=ZZ:ZZ:ZZ:ZZ:ZZ:ZZ;CM-QOS=1.1;CM-VER=3.1;
    16:10:53
Fri Oct 30 2020		   Notice (6)   CM-STATUS message sent. Event Type Code: 3; Chan ID: N/A; DSID: �; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=XX:XX:XX:XX:XX:XX;CMTS-MAC=ZZ:ZZ:ZZ:ZZ:ZZ:ZZ;CM-QOS=1.1;CM-VER=3.1;
  • EricaW's avatar
    EricaW
    Former Moderator
    5 years ago
    Hi, BigDataPhreak

    We'd like to help with this concern. If your cable connections from wall to modem remain secure, please take a moment to email us at cox.help@cox.com with your full home address and account name. You may send a link to this forum to avoid copying and pasting.

    Erica W.
    Cox Support Forums Moderator