We can summarize this chapter with the following points:
- Routers connect networks.
- Routers use routing tables to forward packets.
- Both the IP address and the hostname are logical elements that are used for communication between computers.
- If the destination host is in the LAN, then the source host sends the data directly, via a switch, by addressing the data to the destination host's MAC address.
- If the destination host is in the remote network, the data is sent to the router, via a switch, by addressing the data to the router's MAC address; this refers to an indirect delivery.
- The router connected to the local network segment is referred to as the default gateway.
- Routing is the algorithm that enables the router to select the best path to forward packets to the remote network.
- When the data moves to any of the OSI lower layers, a header and a trailer are added...