The network issues might stem from incorrect settings. Double-check your configurations.
The network issues might stem from incorrect settings. Double-check your configurations.
I got new cable (comcast) and we bought our own modem this time around. We have an Arris Surfboard SB8200. The way I have it set up is: Coax -> Modem -> switch -> 2 routers -> 2 switches (off one router) So our modem connects to a large switch to serve a few devices directly, as well as both our routers, but I found the modem is totally unable to daisy chain switches, so if I go modem -> switch -> switch, no connection. The routers are two apple airport routers, been using them for years. Does this configuration have something wrong with it, something that would cause our network to constantly go down? Our old modem with WOW! cable didn't have this problem, occasionally service would drop out but we chalked that up to WOW! being bad, because it happened like once every couple months. old configuration: modem -> 2 routers and a switch -> switch
To connect your modem, it should be configured in bridge mode. You can link a switch between the modem and routers, or go directly modem → router → switch. Some setups work without bridge mode from modem to router, but others rely on it for proper routing.
That was the setup I used until this morning; it still had the same issues.
The SB8200 is a dedicated cable modem, eliminating the need for bridged mode because it lacks an internal router. Connect the router to the modem, not the switch. Any devices linked to the switch will attempt to obtain an IP address from your ISP, which typically includes a limit defined in the .cm file that the modem uses for setup—generally between 1 and 3 for residential plans. You might need to reach out to Comcast to check their CPE restrictions for your plan.
The device lacks a fan and I've ensured there are no obstructions
I understand, most modems are still without fans, but it seems passive isn't enough anymore. From my experience with modems—especially the 3.1 models you mentioned—it's often heat-related when devices stop working and need a restart or shutdown to function again.