Arris SBG6580-2 Router briefly but frequently drops internet connection, wifi signal stays strong throughout
I recently set up a new Arris SBG6580-2 router/modem combo. At least once every couple minutes it will drop the internet connection for 5-10 seconds and then reconnect. The wifi signal stays strong even while the internet connection has dropped out. I have tested my devices on other wifi networks and this only happens when connected to my router. My router's event log shows these errors repeatedly:
|Thu Sep 28 23:55:29 2017||Critical (3)||Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=bc:64:4b:9a:da:7d;CMTS-MAC=a4:4c:11:8a:dc:79;CM-QOS=1.1;CM-VER=3.0;|
|Thu Sep 28 23:49:44 2017||Critical (3)||Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=bc:64:4b:9a:da:7d;CMTS-MAC=a4:4c:11:8a:dc:79;CM-QOS=1.1;CM-VER=3.0;|
|Thu Sep 28 23:49:02 2017||Notice (6)||TLV-11 - unrecognized OID;CM-MAC=bc:64:4b:9a:da:7d;CMTS-MAC=a4:4c:11:8a:dc:79;CM-QOS=1.1;CM-VER=3.0;|
|Time Not Established||Warning (5)||DHCP WARNING - Non-critical field invalid in response ;CM-MAC=bc:64:4b:9a:da:7d;CMTS-MAC=a4:4c:11:8a:dc:79;CM-QOS=1.0;CM-VER=3.0;|
I have tried several different channels.
My current shows "acceptable" interference levels.
My security is set to WPA2-PSK (AES).
I have disabled WPS.
I have had Cox technicians come out several times. They have supposedly replaced the cable lines running to the house, but I have seen no change in the problem.
Thanks for your help.