The Linux Networking Architecture [Electronic resources] نسخه متنی

Chapter 14. The Internet Protocol V4

Section 14.2.3 explains how data packets are fragmented and reassembled.

In summary, the Internet Protocol handles the following functions:

provides an unsecured connectionless datagram service;

defines IP datagrams as basic units for data transmission;

defines the IP addressing scheme;

routes and forwards IP datagrams across interconnected networks;

verifes the lifetime of packets;

fragments and reassembles packets; and

uses ICMP to output errors.