CodePudding user response:
If send express, for example, you can put the router as a transit point, two computers in the process of communication, the datagram won't run in the past, but by the sender first sent to a router, the router according to written in the datagram to determine the destination address, the next station should be sent to where, may be directly sent to the destination host, may also be sent to the next router, then by a router to do the same work until successfully to the destination host,CodePudding user response:
Well, thank you, also can't ignore the middle transport packaging process, to describe the datagram processing in the transport process