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Old 7th May 2016
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jggimi jggimi is offline
More noise than signal
 
Join Date: May 2008
Location: USA
Posts: 6,343
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Hello, and welcome!

I don't know anything about the various Raspberry products, but if the models have both a wired NIC and a wireless NIC, they can act as routers between a wired subnet and a WiFi subnet.

If you want to route wired Ethernet, then a single NIC does not a router make, unless you implement a vlan(4) based infrastructure, and route via individual VLANs.

VLAN - IEEE 802.1Q - requires a central backbone device called, quite subtly, a managed switch. Unless your switch is in this class, you'll need to use a computer with at least two NICs. Managed switches come with administration and provisioning tools, so you would know if yours was in this class.
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