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Over the past week I was having a problem with modem dropping to 90mbps DL. After a reboot it would connect at 900mbps but then 15-20mins later it was back down to 90mbps. While diagnosing this issue modems were swapped with no change. Changing the ethernet cable between modem and router seemed to resolve it. But looking at modem event log I have a bunch of excess power events followed by dynamic range window violations. I'm wondering if I should be concerned and whether I still need a technician to look into things?
Date Time Event ID Event Level Description02/28/2023 08:52 82000200 3 "No Ranging Response received - T3 time-out;CM-MAC=(redacted);CMTS-MAC=(redacted):ee;CM-QOS=1.1;CM-VER=3.1;"02/28/2023 08:52 2436694061 5 "Dynamic Range Window violation"02/28/2023 08:52 82001200 5 "RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=(redacted);CMTS-MAC=(redacted):ee;CM-QOS=1.1;CM-VER=3.1;"02/28/2023 08:52 2436694061 5 "Dynamic Range Window violation"02/28/2023 08:52 82001200 5 "RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=(redacted);CMTS-MAC=(redacted):ee;CM-QOS=1.1;CM-VER=3.1;"02/28/2023 08:52 2436694061 5 "Dynamic Range Window violation"02/28/2023 08:52 82001200 5 "RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=(redacted);CMTS-MAC=(redacted):ee;CM-QOS=1.1;CM-VER=3.1;"02/28/2023 08:52 2436694061 5 "Dynamic Range Window violation"02/28/2023 08:52 82001200 5 "RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=(redacted);CMTS-MAC=(redacted):ee;CM-QOS=1.1;CM-VER=3.1;"02/28/2023 08:52 2436694061 5 "Dynamic Range Window violation"02/28/2023 08:52 82001200 5 "RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=(redacted);CMTS-MAC=(redacted):ee;CM-QOS=1.1;CM-VER=3.1;"02/28/2023 08:52 2436694061 5 "Dynamic Range Window violation"02/28/2023 08:52 82001200 5 "RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=(redacted);CMTS-MAC=(redacted):ee;CM-QOS=1.1;CM-VER=3.1;"02/28/2023 08:52 2436694061 5 "Dynamic Range Window violation"02/28/2023 08:52 82001200 5 "RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=(redacted);CMTS-MAC=(redacted):ee;CM-QOS=1.1;CM-VER=3.1;"02/28/2023 08:52 82000200 3 "No Ranging Response received - T3 time-out;CM-MAC=(redacted);CMTS-MAC=(redacted):ee;CM-QOS=1.1;CM-VER=3.1;"02/28/2023 08:52 73050400 5 "REG-RSP-MP Mismatch Between Calculated Value for P1.6hi Compared to CCAP Provided Value;CM-MAC=(redacted);CMTS-MAC=(redacted):ee;CM-QOS=1.1;CM-VER=3.1;"02/28/2023 08:52 67061600 6 "DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=(redacted);CMTS-MAC=(redacted):ee;CM-QOS=1.1;CM-VER=3.1;"02/28/2023 08:52 73040100 6 "TLV-11 - unrecognized OID;CM-MAC=(redacted);CMTS-MAC=(redacted):ee;CM-QOS=1.1;CM-VER=3.1;"02/28/2023 08:52 68000300 5 "DHCP WARNING - Non-critical field invalid in response ;CM-MAC=(redacted);CMTS-MAC=(redacted):ee;CM-QOS=1.1;CM-VER=3.1;"01/01/1970 00:00 2436694066 6 "Honoring MDD; IP provisioning mode = IPv4"01/01/1970 00:00 82000200 3 "No Ranging Response received - T3 time-out;CM-MAC=(redacted);CMTS-MAC=(redacted):ee;CM-QOS=1.1;CM-VER=3.1;"01/01/1970 00:00 85000200 3 "UCD invalid or channel unusable;CM-MAC=(redacted);CMTS-MAC=(redacted):ee;CM-QOS=1.1;CM-VER=3.1;"01/01/1970 00:00 84000100 3 "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=(redacted);CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"02/28/2023 08:50 2436694044 3 "Resetting the cable modem due to docsDevResetNow"02/28/2023 08:50 82000200 3 "No Ranging Response received - T3 time-out;CM-MAC=(redacted);CMTS-MAC=(redacted):ee;CM-QOS=1.1;CM-VER=3.1;"02/28/2023 08:50 82000200 3 "No Ranging Response received - T3 time-out;CM-MAC=(redacted);CMTS-MAC=(redacted):ee;CM-QOS=1.1;CM-VER=3.1;"02/28/2023 08:50 82000200 3 "No Ranging Response received - T3 time-out;CM-MAC=(redacted);CMTS-MAC=(redacted):ee;CM-QOS=1.1;CM-VER=3.1;"01/01/1970 00:00 85000200 3 "UCD invalid or channel unusable;CM-MAC=(redacted);CMTS-MAC=(redacted):ee;CM-QOS=1.1;CM-VER=3.1;"01/01/1970 00:00 84000100 3 "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=(redacted);CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;"
You might want to delete one of your posts since duplicates. Also, can you post your signal levels?
Sorry. This first post was flagged as spam so I posted a second time with the same results. I'll delete the second one and post power levels.
In my other thread... which I can't figure out how to delete... you mentioned...
"The T3 timeouts are more of a concern. Are you signal levels OK? Specially the upstream. Also, I see a reset signal being sent. Was that you troubleshooting with Cox?"
I think the levels are good? But when I was troubleshooting the slow speed issue with Cox, I mentioned the Excessive Power events in the event logs to the Cox rep who told me that indicated a problem with my modem and that I needed a new modem. But after getting a new modem I was still have the same problems. That's when I started looking into my speed with a laptop connected directly to the modem and was able to get full speed and lead me to identifying the ethernet cable as the suspected source of my slow speed.
My speeds have been solid for most of the day now but I'm still wondering based on the logs if I still have any underlying issue to be resolved?
The reset was from changing modems on my account... I had Cox add my old modem back to the account since the new one isn't needed.
kengasper said:In my other thread... which I can't figure out how to delete
How to delete a duplicate forum post