Answers and Supplemental Material for The Internet Transit Playbook

This page contains the answers to the exercises and some supplemental material from The Internet Peering Playbook available in June.



1) Given the assumptions in this chapter, what is the maximum cost savings realized by the successful execution of the

a) Optimal Transit tactic

The optimal transit tactic in the best case scenario will be when the next tier of capacity is fully utilizes. The customer will benefit by the transit price at the next commit level minus the optimal transit point by the previous tier commit price.

b) Gaming 95th percentile

The best case scenario is $0/Mbps cost, but there is a chance of n*thePriceOfTransit*theFullOfferedLoad.

2) What other tactics were not mentioned?

Some have pointed to tactics such as

3) You are an eyeball heavy ISP and your buddy is a content heavy ISPs. Because of this, you are not paying for traffic in your outbound direction, and your buddy is not paying for traffic in the inbound direction. How might you work together to reduce costs?

Interconnectng your networks together will ensure that the content traffic destined for eyeballs don't traverse the metered transit connection. This is called peering and is discussed in the next chapter.

Supplemental Material

Supplemental Material


Reference Llinks




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The 2014 Internet Peering Playbook is now available on the iPad at the Apple Store and for the Amazon Kindle. The Kindle, ePub and PDF form are also perpetually updated on the DrPeering DropBox share.