8.4 The Network Layer
8.4.3 The difference between routable and non-routable protocols
A routable (routed) protocol can be delivered beyond a single LAN or WAN segment; its packets can be routed. For routed protocols, a best path can be selected and the packet switched to the appropriate interface for that best path. Non-routable protocols cannot leave the LAN on which they originate. Routable (routed) protocols include IP, IPX, and AppleTalk. NetBEUI is an example of a non-routable protocol.