One message, down the stack and up again
Each click is one layer's work. Watch what gets added, what gets read, and what never gets opened. Forouzan §2.2.
SCENARIO
Host to host, same LAN (switch)
Across one router
LENS
No lens — step through
Only layer 4
Only layer 3
Only layer 2
Only layer 1
◀
Step ▶
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