- My Main PC connected to the 8-Port switch has no visibility to my Media PC or any Shared folder on the PCs connected to the wireless router. It is now isolated from a network standpoint.
That's correct. Correct, because this:
Here is what I planned to have with the new switch:
- Connect all non-wireless PC's to the 8-port switch and they all have Internet connectivity and full network sharing
- Wireless router connected to the 8-Port switch with Internet connectivity for all wireless PCs and Network Sharing
Modem --> router --> switch = correct
Modem --> switch --> router = not correct (and, VeryVeryBad, as it directly exposes to the internet all machines connected to the switch.)
- I'm not getting the benefit from the 8-ports or the Gigabit switch.
Only because it's on the wrong side of the router.
A switch is a 'dumb' device - it's used solely to add ports to your wired LAN (in other words, it's used to add LAN ports to your router.) Fix your config issue (and, reboot each of the mis-connected machines), and it'll all JustWork.
Due to the current mis-configuration, you'll also probably need to reboot your modem and router, as well.