Tutorvo

Propagation Delay & RTT from Distance (Speed of Light in Fibre)

Lesson 3 of 815 minLab

This lesson is part of the course

In this lesson

You calculate the speed of light in fibre, the one-way propagation delay and the minimum RTT for five routes from Pinemoor's Zurich office, and how much of the measured RTT is pure physics.

Buy the course once for $9.99 to unlock every lesson and lab, the final exam and the certificate – lifetime access, no subscription.

Lessons in this course

  1. Bits vs Bytes: Mbps, MB/s, GB and GiBLab12 min Locked
  2. Transfer Time for Files & Backups (and When a Courier Wins)Lab15 min Locked
  3. Propagation Delay & RTT from Distance (Speed of Light in Fibre)Lab15 min Locked
  4. Bandwidth-Delay Product & the TCP Window LimitLab15 min Locked
  5. Packet Loss & Throughput: the Mathis Formula (Simplified)Lab15 min Locked
  6. Protocol Overhead & Goodput: Headers, MTU and Jumbo FramesLab15 min Locked
  7. Link Utilisation & Queueing Delay (M/M/1, Simplified)Lab15 min Locked
  8. Sizing a WAN Link: 95th-Percentile Billing (Chart)Lab20 min Locked