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Forum Discussion
CM1000 No Internet
Hello, over the past few weeks there have been multiple Xfinity internet outages and currently there is no outage but Xfinity is stating the problem is with my modem. I’m extremely suspicious due to the constant outages and I’ve never had any problems previously. I have tried to attach the even log if that helps?
7 Replies
- Is there a different way to attach the event log? Photo file is too large and can’t upload from my PC due to no internet.
Please post a copy and paste of the modems connection status page.
Have the ISP check the signal and line quality UP to the modem. Be sure the ISP provisions the modem correctly.
Be sure there are no coax cable line splitters in the between the modem and ISP service box.
Be sure your using good quality RG6 coax cable up to the modem.
Be sure to power OFF the modem for 1 minute then back ON.
https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Modems/m-p/1530376#M12853
https://kb.netgear.com/24311/Power-level-guidelines-for-a-NETGEAR-cable-modem-router?article=24311
https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.htmlJust copy and paste the text portions from the event and Connection status pages here in the post box. Will look similar to this:
- This is the only way I can get it to paste since it’s from my phone.
2022-04-11, 17:10:20 Notice (6) CM-STATUS message sent. Event Type Code: 1; Chan ID: 37; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=28:80:88:ac:dd:d0;CMTS-MAC=00:01:5c:b2:1a:61;CM-QOS=1.1;CM-VER=3.1;
2022-04-11, 17:10:16 Warning (5) MDD message timeout;CM-MAC=28:80:88:ac:dd:d0;CMTS-MAC=00:01:5c:b2:1a:61;CM-QOS=1.1;CM-VER=3.1;
2022-04-11, 17:09:59 Notice (6) DS profile assignment change. DS Chan ID: 32; Previous Profile: ; New Profile: 1 2 3.;CM-MAC=28:80:88:ac:dd:d0;CMTS-MAC=00:01:5c:b2:1a:61;CM-QOS=1.1;CM-VER=3.1;
Time Not Established Notice (6) Honoring MDD; IP provisioning mode = IPv6
Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=28:80:88:ac:dd:d0;CMTS-MAC=00:01:5c:b2:1a:61;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=28:80:88:ac:dd:d0;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;
2022-04-11, 16:23:27 Critical (3) No Ranging Response received - T3 time-out;CM-MAC=28:80:88:ac:dd:d0;CMTS-MAC=00:01:5c:b2:1a:61;CM-QOS=1.1;CM-VER=3.1;
2022-04-11, 16:23:17 Critical (3) SYNC Timing Synchronization failure - Loss of Sync;CM-MAC=28:80:88:ac:dd:d0;CMTS-MAC=00:01:5c:b2:1a:61;CM-QOS=1.1;CM-VER=3.1;
Time Not Established Critical (3) No Ranging Response received - T3 time-out;CM-MAC=28:80:88:ac:dd:d0;CMTS-MAC=00:01:5c:b2:1a:61;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=28:80:88:ac:dd:d0;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.1;Need the cable connection status page as well.
You have criticals on the events page. Something your ISP needs to look into.
