DukeEdwardI:
Do all network switches support VLAN tagging out of the box? Would I need managed or unmanaged? Is putting a switch between the modem and router even a good idea, because I sure as hell don't know. Networking problems suck.
Not all switches support VLAN tagging.
You want a managed switch.
Each of the possible components are:
- Router - Allows traffic to flow from one network segment to another. In residential deployments is commonly used to allow devices on the local network to access the ISP's network.
- Switch - Allows multiple devices to connect to the same network segment. Switches (ignoring layer three switches that you don't see in residential deployments) cannot move traffic from one network segment to another.
- Access Point - Converts 802.11 (wireless) frames into 802.3 (Ethernet) frames and places them into the network segment.
The issue most people face is that they purchase or obtain a router with an integrated wireless system. The location in the house where the router needs to be to physically connect to the ISP's network is very rarely the best place to have the wireless radios. Therefore, I commonly disable the router's integrated wireless system and purchase an access point. That access point has an Ethernet connection back to the router. This gives the best wireless performance.