This article provides a comprehensive, diagram‑driven analysis of Kubernetes networking, covering underlay and overlay models, the role of VLAN, OSPF, BGP, and various CNI plugins such as Flannel host‑gw, Calico BGP, IPVLAN/MACVLAN, Multus, and Danm, as well as tunnel technologies like VxLAN and IPIP.
This article explains Calico’s three Kubernetes networking modes—BGP, IPIP, and VXLAN—detailing their packet‑forwarding processes, proxy‑ARP usage, encapsulation mechanisms, performance trade‑offs, and a side‑by‑side comparison of requirements and operational complexity.
This article explains Calico's IPIP networking mode in Kubernetes, covering its architecture, core components, routing behavior, command‑line examples, and packet‑capture analysis to illustrate how pods communicate across nodes.
This article explains Kubernetes networking fundamentals, including intra‑pod communication, pod‑to‑pod traffic, service IP routing, and compares CNI plugins like Flannel and Calico with details on IPIP and BGP optimizations.
This article explains how containers communicate within a pod, between pods, and with services in Kubernetes, and compares Calico's IPIP and BGP networking modes, detailing their traffic handling, suitable scenarios, efficiency, and configuration steps.
This article explains Calico’s IPIP networking mode in Kubernetes, detailing its architecture, core components, routing behavior, packet encapsulation, and practical verification through ping tests, route inspection, and packet captures, helping readers understand cross‑node pod communication.
This article examines Calico’s IPIP networking mode in Kubernetes, detailing its architecture, core components, IPIP vs BGP operation, route analysis, packet‑capture findings, and pod‑to‑service communication to illustrate how IP encapsulation facilitates cross‑node traffic.
This article provides a comprehensive guide to Calico as a Kubernetes CNI, covering its BGP‑based three‑layer architecture, deployment steps, configuration of etcd certificates, management tools, BGP route‑reflector mode, IPIP tunneling, and network policy implementation for cloud‑native clusters.
This article examines Calico’s networking architecture, compares its IPIP and BGP modes, and presents detailed performance measurements—including ping latency, bandwidth via iperf, and HTTP load testing—across physical machines and Kubernetes pods, highlighting the impact of each mode on throughput and latency.
