[{"data":1,"prerenderedAt":16},["ShallowReactive",2],{"blog-tag-en-cni":3},[4],{"path":5,"title":6,"description":7,"date":8,"tags":9},"\u002Fblog\u002Fen\u002Fkubernetes-networking-cni-service-mesh-network-engineer","You Can Calculate Subnets, But Your Pods Won't Connect: The First Wall in Kubernetes Networking","You're great at subnet design, so why does Pod-to-Pod communication in Kubernetes trip you up every time? We break down the fundamentals of Kubernetes networking—CNI, Service Mesh, and NetworkPolicy—by contrasting them with traditional network design.","2026-07-22",[10,11,12,13,14,15],"kubernetes","k3s","networking","cni","service-mesh","network-policy",1786354675047]