1-3-ip_service_model-notes.pdf
main focus
IP datagram
IP datagrams consist of a header and some data. When the transport layer has data to send, it hands a Transport Segment to the Network layer below.
The network layer puts the transport segement inside a new IP datagram. IP’s job is to deliver the datagram to the other end.IP sends the datagram to the Link Layer that puts it inside a Link frame, such as an Ethernet packet and ships it off to the first router.
IP’s four properties
Why the ip service is so simple
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