When to Use BGP, VXLAN, or IP-in-IP: A Practical Guide for Kubernetes Networking
When deploying a Kubernetes cluster, a critical architectural decision is how pods on different nodes communicate. The choice of networking mode directly impacts performance, scalability, and operational overhead. Selecting the wrong mode for your environment can lead to persistent performance issues, troubleshooting complexity, and scalability bottlenecks. The core problem is that pod IPs are virtual.