[{"data":1,"prerenderedAt":34},["ShallowReactive",2],{"blog-tag-en-cni":3},[4,15,23],{"path":5,"title":6,"description":7,"date":8,"tags":9},"\u002Fblog\u002Fen\u002Fkubernetes-cni-overlay-network-troubleshooting-ospf","OSPF Fixes Itself in a Minute — Why Does a Kubernetes CNI Outage Take Half a Day?","Why does troubleshooting a Kubernetes overlay network take so long? This article breaks down how CNI works, the differences between Flannel VXLAN and Calico BGP, and the step-by-step process for isolating MTU mismatches that every K3s operator should know.","2026-08-16",[10,11,12,13,14],"k3s","kubernetes","cni","overlay-network","networking",{"path":16,"title":17,"description":18,"date":19,"tags":20},"\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",[11,10,14,12,21,22],"service-mesh","network-policy",{"path":24,"title":25,"description":26,"date":27,"tags":28},"\u002Fblog\u002Fen\u002Fcilium-ebpf-kubernetes-networking","Revolutionizing Kubernetes Networking with Cilium and eBPF","Discover how Cilium uses eBPF to transform Kubernetes networking. Compare with traditional CNIs, explore L7 policies, and leverage Hubble for observability.","2026-05-27",[29,30,11,14,12,31,32,33],"cilium","ebpf","cncf","security","hubble",1792488953328]