A network-layer protocol consists of a network addressing plan plus a set of procedures that are carried out to deliver data to a destination network address.
A routed network can provide multiple paths to a destination.
A global network-layer address plan is hierarchical.
IP addresses that start with the same network and subnet numbers belong to the same LAN.
An IP system discovers the MAC address of a destination on its LAN by broadcasting an ARP message.
An IP datagram that is addressed to a destination that is not on the originator's LAN must be transmitted to a router.
A router performs a routing table lookup to determine the port through which a datagram should be forwarded. A new frame header and trailer must be wrapped around ...