You could always get a cheap smart switch/plug and just schedule a time.I’ve done that on devices before

Seems a bit kludgey, but you are totally correct.

Does  the CM2000 support a scheduled reboot?

No it doesn’t. 

Why are you wanting a scheduled reboot? 

My Arris G36 periodically loses Internet connectivity. A reboot restores connectivity. A scheduled reboot might address the issue. Your comment regarding a smart switch / plug would accomplish that, but I thought to explore a built in solution first.

When its dropping, log into it and check its cable connections page and event logs. 

Post a copy of them back here when it drops. 

the cmts can switch what channels your modem is on and it could be causing it to be on poor channels with issues. the reboot can make it switch back to decent channels. So its worth checking that. 

Will do

Here’s a snip of the G36 event logs around the time of failure. I have a copy of the entire day’s event log but the option 82 /option 24 critical events seem to be most interesting.

The option 24 & 82 critical errors are commonly reported for Xfinity connections. A lot of the chatter points to local devices that are failing and suggests disconnecting each device in turn to locate the failing device. I suspect that the Arris G36 is the issue. This G36 was a replacement for the comcast rental. The comcast rental did not have this problem. 

Arris G36 event log at time of failure

ti_dhcp6c: 72001011-DHCPv6 - Missing Required Option 82    04/18/2023 16:35:19    Critical
ti_dhcp6c: 72001011-DHCPv6 - Missing Required Option 24    04/18/2023 16:35:19    Critical
ti_dhcp6c: 72001011-DHCPv6 - Missing Required Option 82    04/18/2023 16:26:48    Critical
ti_dhcp6c: 72001011-DHCPv6 - Missing Required Option 24    04/18/2023 16:26:48    Critical
ti_dhcp6c: 72001011-DHCPv6 - Missing Required Option 82    04/18/2023 15:34:36    Critical
ti_dhcp6c: 72001011-DHCPv6 - Missing Required Option 24    04/18/2023 15:34:36    Critical
ti_dhcp6c: 72001011-DHCPv6 - Missing Required Option 82    04/18/2023 15:17:55    Critical
ti_dhcp6c: 72001011-DHCPv6 - Missing Required Option 24    04/18/2023 15:17:55    Critical
DHCPv4: 72001001-DHCPv4 Provision - Completed    04/18/2023 14:56:25    Informational
ti_dhcp6c: 72001002-DHCPv6 Provision - Completed    04/18/2023 14:56:16    Informational
ti_dhcp6c: 72001011-DHCPv6 - Missing Required Option 24    04/18/2023 14:56:12    Critical
ti_dhcp6c: 72001011-DHCPv6 - Missing Required Option 82    04/18/2023 14:56:11    Critical
ti_dhcp6c: 72001004-DHCPv6 Provision - 0 Retries Attempted with Last attempt at Tue Apr 18 14:56:10 2023    04/18/2023 14:56:11    Critical
ti_dhcp6c: 72001015-DHCPv6 Failed - No Prefix Available    04/18/2023 14:56:10    Critical
ti_dhcp6c: 72001014-DHCPv6 Failed - No Address Available    04/18/2023 14:56:10    Critical
ti_dhcp6c: 72001011-DHCPv6 - Missing Required Option 82    04/18/2023 14:56:10    Critical
ti_dhcp6c: 72001011-DHCPv6 - Missing Required Option 24    04/18/2023 14:56:10    Critical
eRouterEvents: 72003004-eRouter enabled as Dual Stack    04/18/2023 14:56:07    Informational
No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;    04/18/2023 14:55:58    Critical
MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;    04/18/2023 14:55:52    Warning
ti_dhcp6c: 72001011-DHCPv6 - Missing Required Option 24    04/18/2023 14:45:58    Critical
ti_dhcp6c: 72001011-DHCPv6 - Missing Required Option 82    04/18/2023 14:45:58    Critical
DS profile config update. DS Chan ID: 193.;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.1;    04/18/2023 14:34:45    Notice
ti_dhcp6c: 72001011-DHCPv6 - Missing Required Option 24    04/18/2023 14:13:33    Critical
ti_dhcp6c: 72001011-DHCPv6 - Missing Required Option 82    04/18/2023 14:13:33    Critical
ti_dhcp6c: 72001011-DHCPv6 - Missing Required Option 82    04/18/2023 13:37:37    Critical
ti_dhcp6c: 72001011-DHCPv6 - Missing Required Option 24    04/18/2023 13:37:37    Critical
ti_dhcp6c: 72001011-DHCPv6 - Missing Required Option 82    04/18/2023 13:12:18    Critical
ti_dhcp6c: 72001011-DHCPv6 - Missing Required Option 24    04/18/2023 13:12:18    Critical
ti_dhcp6c: 72001011-DHCPv6 - Missing Required Option 82    04/18/2023 12:33:42    Critical