IP协议的使用

 

The Internet Protocol is not designed to be absolutely reliable. The purpose of these control messages is to provide feedback about problems in the communication environment, not to make IP reliable.

There are still no guarantees that a datagram will be delivered or a control message will be returned. Some datagrams may still be undelivered without any report of their loss. The higher level protocols that use IP must implement their own reliability procedures if reliable communication is required.

 

在IP协议的设计中，已经充分考虑了分层设计，这样每次改动可以避免最小的改动，兼容性也比较好。

 

参考资料： https://datatracker.ietf.org/doc/html/rfc792

参考资料：《现代嵌入式计算》 Peter Barry. Patrick Crowley