Dustin Specker • 4/11/2022

Kubernetes Networking from Scratch: Using BGP and BIRD to Advertise Pod Routes

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This article explores the underlying mechanics of Kubernetes networking, specifically focusing on how the Calico CNI uses BGP and BIRD to advertise pod routes between nodes. It provides a hands-on, from-scratch tutorial using virtual machines, network namespaces, and virtual ethernet devices to replicate and understand the routing table entries seen in a Calico-powered cluster.

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#networking #Kubernetes #Bgp
Kubernetes Networking from Scratch: Using BGP and BIRD to Advertise Pod Routes

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