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This article examines Kubernetes networking by defining underlay and overlay models, describing how underlay networks like flannel host‑gw and Calico BGP operate, explaining IPVLAN/MACVLAN virtualization, and reviewing common tunnel protocols such as VxLAN and IPIP used by various CNI plugins.
This article explains Kubernetes networking models, detailing the underlay network infrastructure, overlay techniques, and common CNI implementations such as Flannel, Calico, IPVLAN, and VxLAN, while comparing their architectures, protocols, and configuration considerations.
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