Hello,
After dealing with this over several weeks , which included several contact by phone & IM with Xfinity support. I thought I'd try here. The issue seems to occur mainly durring specfic times of day (currently around 9-11am , and again in afternoon from 4-7pm) . The outages last anywhere from brief 1 ping lost to 10 minutes.. of complete outage.. They occur repeatedly within those windows, making my work from home extreemly difficult at those times. The steps I have tried include the following (multiple times for each):
- Checked all connections as tight..etc
- Watched the video for gigabit issues
- Restart Modem SB8200, manually and via comcast app
- Disconnect router , & connecting directly to Desktop pc
- Have comcast test connection while the issues were occurring
- Push Factory reset button on Modem SB8200 (*see far below note)
- noted Modem is seening Numerous Uncorrectables
- After factory reset, Corrected/Uncorrectables stay at 0 until I start seeing connectivity issues then they spike as below.
PLEASE HELP , has been going on for months 🙂
Numerous Uncorrectables
* The one instance I hit the factory Reset durring an episode I got the following in the Event log, subsequent resets and restarts have shown nothing .
7/07/2020 10:55 2436694061 5 "Dynamic Range Window violation" 07/07/2020 10:55 82001200 5 "RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=.... 07/07/2020 10:55 2436694061 5 "Dynamic Range Window violation" 07/07/2020 10:55 82001200 5 "RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=.... 07/07/2020 10:55 2436694061 5 "Dynamic Range Window violation" 07/07/2020 10:55 82001200 5 "RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=.... 07/07/2020 10:55 2436694061 5 "Dynamic Range Window violation" 07/07/2020 10:55 82001200 5 "RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=.... 07/07/2020 10:55 2436694061 5 "Dynamic Range Window violation" 07/07/2020 10:55 82001200 5 "RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=.... 07/07/2020 10:55 2436694061 5 "Dynamic Range Window violation" 07/07/2020 10:55 82001200 5 "RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=.... 07/07/2020 10:55 2436694061 5 "Dynamic Range Window violation" 07/07/2020 10:55 82001200 5 "RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=.... 07/07/2020 10:55 2436694061 5 "Dynamic Range Window violation" 07/07/2020 10:55 82001200 5 "RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=.... 07/07/2020 10:55 2436694061 5 "Dynamic Range Window violation" 07/07/2020 10:55 82001200 5 "RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=.... 07/07/2020 10:55 2436694061 5 "Dynamic Range Window violation" 07/07/2020 10:55 82001200 5 "RNG-RSP CCAP Commanded Power in Excess of 6 dB Below the Value Corresponding to the Top of the DRW;CM-MAC=.... 07/07/2020 10:55 84000500 3 "SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=.... 07/07/2020 10:55 67061600 6 "DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=.... 01/01/1970 00:01 2436694066 6 "Honoring MDD; IP provisioning mode = IPv6" 01/01/1970 00:01 82000200 3 "No Ranging Response received - T3 time-out;CM-MAC=.... 01/01/1970 00:01 84020200 5 "Lost MDD Timeout;CM-MAC=.... 01/01/1970 00:01 84000100 3 "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=.... 01/01/1970 00:01 84020200 5 "Lost MDD Timeout;CM-MAC=.... 01/01/1970 00:00 84000100 3 "SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=....
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