Computer Networking · Interactive Lesson
Simple Web Page Requestwww.google.com
Plug a laptop into the school network and load a webpage. Four protocols have to run, in order — DHCP, ARP, DNS, then TCP + HTTP — step through every packet and watch how each message is wrapped, layer by layer.
Network map · what the laptop knowsIP: none
Current step
tip: use ← → keys
Encapsulationlayers 5 → 1
5Application
—
4Transport
—
3Network
—
2Data Link
—
1Physical
—
Packet capturetcpdump -i eth0
Based on Computer Networking: A Top-Down Approach (6th ed.), Kurose & Ross · Original notes: Grégoire Roumache, November 2019