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Routing

BGP ORIGIN attribute manipulation and its impact on the Internet

By doing in-depth testing, we found nearly 70% of BGP paths experience ORIGIN attribute rewrites by transit providers seeking traffic advantages. We examine the global impact of this practice and argue for deprecating ORIGIN in route selection.

BGP zombies and excessive path hunting

A BGP “zombie” is essentially a route that has become stuck in the Default-Free Zone (DFZ) of the Internet, potentially due to a missed or lost prefix withdrawal. We’ll walk through some situations where BGP zombies are more likely to rise from the dead and wreak havoc.

Routing information now on Cloudflare Radar

The Internet is a vast, sprawling collection of networks that connect to each other. The new Cloudflare Radar Routing page monitors routing changes and anomalies and presents statistics about how we see traffic getting routed on the Internet

Why BGP communities are better than AS-path prepends

Routing on the Internet follows a few basic principles. Unfortunately not everything on the Internet is created equal, and prepending can do more harm than good. In this blog post we’ll talk about the problems that prepending aims to solve, and some alternative solutions