Weird issue with OFDM channel causing disconnects
Hi, last week a storm blew through and a fallen tree took out some cables, resulting in loss of connection. It has been since fixed, but ever since I have been experiencing intermittent internet issues. Symptoms: My internet connection would suddenly drop briefly, any streaming would be interrupted, all VoIP would disconnect and online games will disconnect immediately. The connection will be restored immediately (usually within 30s), but this can happen in intervals of 20 minutes to as low as every other minute. I receive intermittent packet loss when doing a packet loss test. Troubleshooting so far: Ever since the initial outage so far, I have replaced my modem 3 times. First was a refurb CM1000, then a new CM1000, now a Arris Surfboard SB200 (I have 500Mbps) I consistently (every ~5 minutes) see the followingmessage in my modem logs, across all 3 modems (MAC address redacted): CM-STATUS message sent. Event Type Code: 16; Chan ID: 159; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: 2.;CM-MAC=XXX;CMTS-MAC=XXX;CM-QOS=1.1;CM-VER=3.1;" It would sometimes alternate between Event Type Code 16 and event type code 24. The Chan 159 corresponds to the OFDM channel, and is throwing a lot of correctable codewords (around 10% of total codewords). I will have posted the signal levels and the modem logs as an image to this post I called tech support and after being on the phone with them for 1 hour, they said they detected intermittent packet loss and could see an OFDM error code on their end I have requested a tech to come out,but he said that the signal levels are perfect and that the problem is the modem. I am almost 99% sure its not my modem at this point since I have tried 3 of them and all have the same issue. https://imgur.com/a/nu4jwlEhttps://imgur.com/a/BWTkSKKhttps://imgur.com/GemgqoI Any help would be greatly appreciated.4.6KViews0likes5Comments“What’s UP?” Problems since new firmware push for MB8600: 8600-19.3.15; VERY SLOW UPLOAD SPEEDS, plus broken modem admin utility/GUI
“What’s UP?” Problems since new firmware push for MB8600: 8600-19.3.15; VERY SLOW UPLOAD SPEEDS, plus broken modem admin utility/GUI Anybody else with an MB8600 notice very low upload speeds these past fee weeks? (Especially since the push of 8600-19.3.15?) Plus, 0 up on OFDMA, 1 down on OFDM. Acquire DS channel: 849000000 Hz. In re: the admin utility/GUI (192.168.100.1 ... THE EVENT LOG IS MISSING(?!!)... the complete list of channels is missing... the log out function is missing, etc. Anybody else with these issues? I’ve factory reset using the admin web utility/GUI, I’ve hard reset using the paper clip in the reset button on the back of the device, I’ve Cox modem reset, I’ve rebooted using the modem web admin utility, I’ve rebooted using the on/off button, I’ve power cycled by unplugging, I’ve unplugged the coax and plugged back in, etc... I’m in the New Orleans, LA market. THANK YOU!!2.2KViews1like5CommentsUpstream OFDM is coming
I saw this post on DSLReports and thought it was interesting. Basically upstream OFDM is being enabled in some areas along with a extra downstream OFDM channel. No new upstream speeds have been announced but I predict they are coming. Seems if you have 8 upstream channels you are close to an upgrade.2.1KViews0likes9Comments
