3.2. A Protocol's Job
You have seen that when a system wants to transfer information to another system, it does so by creating a frame with the target system's node address in the destination field of the frame header. This method of communication is part of your topology's communication rules. This transmission raises the following questions:
Should the transmitting system simply assume the frame was received in one piece?
Should the destination system reply, saying, "I received your frame, thanks!"?
If a reply should be sent, does each frame require its own acknowledgment, or is it OK to send just one for a group of frames?
If the destination system is not on the same local network, how do you figure out where to send your data?
If the destination ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access