Hi, this just started happening, so I’m not sure it’s related to a firmware upgrade. Rebooting the router seems to fix it temporarily, but the status page will show the link gets lost to the modem and the gui says the modem is unplugged. As best I can tell it’s triggered by downloading or streaming, when idle or there’s low traffic it stays up. It’s possible it’s an issue with the modem too, but rebooting the modem does not temporarily fix the problem while rebooting the router does, so seems like the router is at fault.
Re: R7800 loses connection to SB modem when streaming
What is the Mfr and model# of the Internet Service Providers modem/ONT the NG router is connected too?
Does the Internet LED on the router turn AMBER when this happens?
Are you wired or wireless when streaming?
What devices are you usinng?
Has a power off for 1 minute then back ON with the ISP modem and router been performed since last update? Be sure to restart your network in this sequence: Turn off and unplug modem. Turn off router and computers. Plug in and turn on modem. Wait 2 minutes for it to connect. Turn on the router and wait 2 minutes for
Re: R7800 loses connection to SB modem when streaming
It’s a Motorola SB6141. Comcast. Lights on modem stay blue/geeen, no amber. Wireless, but I can connect to the router to get its status so it’s not a Wi-Fi issue. Seems to just be the link state between the modem and the router.
Re: R7800 loses connection to SB modem when streaming
Did you go through the start-up sequence like was recommended?
Make sure your Ethernet cable between your modem and the router is good.
When you last updated your firmware, did you do a firmware default reset and reconfigure the router or did you do a dirty update and leave the configuration from the previous firmware in place?
Re: R7800 loses connection to SB modem when streaming
So the Internet LED on the R7800 remains blinking WHITE when this happens?
Has a power off for 1 minute then back ON with the ISP modem and router been performed since last update? Be sure to restart your network in this sequence: Turn off and unplug modem. Turn off router and computers. Plug in and turn on modem. Wait 2 minutes for it to connect. Turn on the router and wait 2 minutes for
Re: R7800 loses connection to SB modem when streaming
The modem looks ok when I check it yeah. But I'm also wondering if Comcast is sending reboots to the modem on Sunday nights which causes the router to see the modem go offline. There could be multiple things going on I wonder. As that today things seem fine again.
I found logs of my modem giving up on Comcast and rebooting... so I'm wondering if it's Comcast doing dumb stuff now.
Mar 21 2022 08:24:09
3-Critical
R02.0
No Ranging Response received - T3 time-out;CM-MAC=cc:65:ad:d3:4c:73;CMTS-MAC=00:90:f0:1d:06:00;CM-QOS=1.1;CM-VER=3.0;
Mar 20 2022 23:12:22
5-Warning
Z00.0
MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=cc:65:ad:d3:4c:73;CMTS-MAC=00:90:f0:1d:06:00;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:00:17
6-Notice
N/A
Cable Modem Reboot due to T4 timeout ;CM-MAC=cc:65:ad:d3:4c:73;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.0;
Mar 20 2022 23:11:31
3-Critical
R02.0
No Ranging Response received - T3 time-out;CM-MAC=cc:65:ad:d3:4c:73;CMTS-MAC=00:90:f0:1d:06:00;CM-QOS=1.1;CM-VER=3.0;
Mar 20 2022 23:11:31
3-Critical
R07.0
Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=cc:65:ad:d3:4c:73;CMTS-MAC=00:90:f0:1d:06:00;CM-QOS=1.1;CM-VER=3.0;
Mar 20 2022 23:11:21
6-Notice
I502.0
Received REG-RSP while in REG-HOLD1 state;CM-MAC=cc:65:ad:d3:4c:73;CMTS-MAC=00:90:f0:1d:06:00;CM-QOS=1.1;CM-VER=3.0;
Mar 20 2022 23:10:18
5-Warning
Z00.0
MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=cc:65:ad:d3:4c:73;CMTS-MAC=00:90:f0:1d:06:00;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:00:18
6-Notice
N/A
Cable Modem Reboot due to T4 timeout ;CM-MAC=cc:65:ad:d3:4c:73;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.0;
Re: R7800 loses connection to SB modem when streaming
Oh yeah the T4 event is listed in the link there, so it's likely Comcast causing the modem to reboot, the router then thinks the modem went offline, I go over to the modem and look at the lights and by that time it's back up and everything is green. This seems likely to me.
