Category BGP

eBGP Peering: Intent-Based Path Selection

The backbone of inter-Autonomous System (AS) communication on the internet relies heavily on External Border Gateway Protocol (eBGP). As networks evolve, so do the best practices and methods for configuring, securing, and automating eBGP peering. This updated guide dives into…

BGP Reachability Best Practices

The landscape of Border Gateway Protocol (BGP) reachability and robust network design has evolved considerably since this post was first published. While the fundamental principles remain, modern networks demand heightened attention to scalability, security, and observability. Let’s revisit a classic…

BGP Default Routing

Originally published back in 2011, this post introduced the essential concept of originating a default route in BGP. While the fundamental principles of BGP default route advertisement remain true, the landscape of network engineering, especially concerning automation, security, and advanced…