Skip to content
World 2 · Routers and the Path · 13 min · PRO

The network of networks

ISPs, peering and BGP

PRO · How the Internet Works

World 2: Routers and the Path is part of PRO

The first world of How the Internet Works is free. PRO opens the other 26 lessons in 6 worlds — simulations, quizzes and all.

  • Hops
  • TTL and traceroute
  • When a link fails
  • The ocean floor is the Internet's backbone
  • Light in glass
PRO includes
  • All 60 labs — every world, every lesson
  • Practice exams and certificates

$8.33/mo, billed yearly ($99.99) · or $39.99 monthly

Unlock How the Internet WorksTry the free world
My notes
Only saved in this browserAll my notes →
← When a link failsThe ocean floor is the Internet's backbone →

Report a mistake

What is wrong?
0 / 2000 · at least 10 characters
Sent along with your report
  • Page
  • About The network of networks — How the Internet Works · internet/network-of-networks
Plus your browser type. Reports go to our support system; see the privacy notice.