Chapter 8. Routing and Bridging

Routing and bridging are functionally very similar, but they have significant differences. Both allow nodes on different interfaces to communicate with each other. With routing, however, the different interfaces reside on different subnets. In order for a packet to reach a node on a different subnet, the router must determine if the destination subnet is a local subnet. If not, the packet is sent to one of the router's gateways. If the destination is a local subnet, then the packet will still not be forwarded unless the rules allow it. Bridges are just connections between network segments. Hubs and switches are examples of bridges; hubs send packets out to every other port on the device, while switches learn which ...

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