When a router uses a forwarding table to look up a next-hop address, the result is an IP address. What must happen before the datagram can be sent?
What will be an ideal response?
Each router along the path uses the destination IP address in the datagram to select a next-
hop address, encapsulates the datagram in a hardware frame, and transmits the frame across one
network. A crucial step of the forwarding process requires a translation: forwarding uses IP
addresses, and a frame transmitted across a physical network must contain the MAC address of the
next hop.
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