I have a 1-3 year old Motorola Surfboard SB6141 and Cox. The modem and my LAN are up 24/7. Recently, I have been loosing my connection to the Internet. My local LAN is up (I can ping/ssh other computers on the LAN) but I get and error message of "Can't resolve host" when I try to ping google. A quick power off, wait 30 seconds, power on of the modem fixes the problem. These outages are happening more frequently - daily for the last two days. The lights on the front of the modem are not different between running normally and unable to access the Internet.

The downstream signal to noise is 37 - 38 dB @ 14 dBmV. The upstream power level is 41 - 45 dBmV. 

I am seeing this in the logs for the modem on a regular basis after the reboots

MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;

TLV-11 - unrecognized OID;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0;

Do I need to buy a new modem? Is there anything Cox can do?

Thanks,

Mark