The Parcel's Journey
Included with a plan
This board is included with a plan. The first three lessons of every track are free, with their boards and videos. A plan unlocks every lesson, board, video, lab and paper for one price.
Lessons that use this board
- How a parcel finds any house on earthlesson
- One click, every layer (what happens when you load a page)lesson
- It won't load: the ladder (network debugging)lesson
- Inside one postal company (distance-vector, link-state, and ICMP)lesson
- Build it: ping, and the parcel that dies on purpose (ICMP and traceroute)lesson
The Parcel's Journey. How a parcel finds any house on earth — in 11 handoffs
a real package, tracked live from your laptop to example.com just now — 15 milliseconds door to door
your ISP's private corri
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