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I'm using an Arris SB8200. For the past week or so, the Internet cuts out for 10-15 seconds several times an hour. I've run a recurring ping and it shows it dropping on the first hop from my router. It's not a Wi-Fi issue--I'm on Ethernet--and it impacts multiple devices. I've power-cycled my cable modem, factory reset it, etc. but still have this issue.
Can you post your signal levels from 192.168.100.1? Also, do you see anything in the logs like T3/T4 time-out errors?
I can't login to my cable modem. I can factory reset it, but when I login with the default username and password it brings me to a "change password" page. When I change the password, it returns an error that says "Device failed to update password."My guess--and it's just a guess--is that Cox flashes the firmware via the coax when I first plugged it in, and did so in a way that prevents subsequent password changes. But without that, there's no way for me to login to the admin console.Edit: That's interesting. Having multiple numeric characters apparently doesn't work. I figured out a combination of characters and one numeric character that does. Let me look through the logs...
Don't post the logs without removing the modem MAC address from it.
Here are my logs:
03/04/2023 12:08 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=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 12:03 2436694061 5 "Dynamic Range Window violation"03/04/2023 12:03 82001100 5 "RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 12:03 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=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 12:03 84000500 3 "SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 12:03 82000200 3 "No Ranging Response received - T3 time-out;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 12:03 84000500 3 "SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 12:03 82000200 3 "No Ranging Response received - T3 time-out;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 12:02 82000400 3 "Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 12:02 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=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 12:02 82000500 3 "Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 12:02 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=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 12:02 82000500 3 "Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 12:02 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=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 12:02 82000500 3 "Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 12:02 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=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 12:01 2436694061 5 "Dynamic Range Window violation"03/04/2023 12:01 82001100 5 "RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 12:01 2436694061 5 "Dynamic Range Window violation"03/04/2023 12:01 82001100 5 "RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 12:01 2436694061 5 "Dynamic Range Window violation"03/04/2023 12:01 82001100 5 "RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 12:01 82000500 3 "Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 12:01 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=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 12:01 82000500 3 "Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 12:01 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=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 12:01 82000500 3 "Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 12:01 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=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 11:43 82000500 3 "Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 11:43 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=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 11:43 82000500 3 "Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 11:43 84000500 3 "SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 11:43 82000200 3 "No Ranging Response received - T3 time-out;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 11:43 84000500 3 "SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 11:43 82000200 3 "No Ranging Response received - T3 time-out;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 11:43 82000800 3 "16 consecutive T3 timeouts while trying to range on upstream channel 8;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 11:43 82000600 3 "Unicast Maintenance Ranging attempted - No response - Retries exhausted;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 11:43 82000500 3 "Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 11:39 2436694061 5 "Dynamic Range Window violation"03/04/2023 11:39 82001100 5 "RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 11:39 82000500 3 "Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 11:39 2436694061 5 "Dynamic Range Window violation"03/04/2023 11:39 82001100 5 "RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 11:39 82000400 3 "Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 11:38 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=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 11:38 82000500 3 "Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 11:38 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=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 11:38 82000500 3 "Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 11:38 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=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 11:35 82000500 3 "Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"
The forum software is flagging my response as "spam". I am seeing some errors:03/04/2023 12:03 82000200 3 "No Ranging Response received - T3 time-out;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"
Here's another example:03/04/2023 12:03 84000500 3 "SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"
And another:03/04/2023 12:03 2436694061 5 "Dynamic Range Window violation"03/04/2023 12:03 82001100 5 "RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW;CM-MAC=[redacted];CMTS-MAC=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"03/04/2023 12:03 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=b0:8b:d0:6d:d3:21;CM-QOS=1.1;CM-VER=3.1;"