How the internet really works: IP transit, peering and provider tiers
How ISPs connect to each other through peering and paid IP transit, what Tier-1, Tier-2 and Tier-3 providers are, and why two providers on two routers is the topology to aim for.
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Measuring bandwidth usage: 95th percentile, CIR and actual usage
How 95th percentile billing works, why the top 36 hours of the month are free, and how it compares with a committed information rate and volume-based billing.
