Networking

Kubernetes Ingress gives you host-based routing and TLS termination through a single external IP. This walkthrough covers Contour, self-signed certs, and validating HTTPS load balancing on a Kind cluster from scratch.

LoadBalancer services in Kind stay <pending> forever without a cloud controller. Here is how to fix that with cloud-provider-kind, get a real external IP, and actually validate load balancing across your pods.

A complete walkthrough of the network fabric design for a 4,000-GPU NVIDIA B200 cluster: 3-tier InfiniBand backend, dedicated Ethernet fabrics for management and storage, OOB network, rail-optimized topology with intra/inter-rail communication patterns, power, cooling, and rack layout.

Cilium VXLAN, FRRouting eBGP, Hubble, and Kubeshark on a 4-node ARM64 cluster. Covers routing limitation, the FRR self-peering problem, and a 52-check validation suite from scratch.

Compare the top Kubernetes CNI options: Calico, Cilium, Flannel, Weave, and more. Learn pros, cons, and which one fits your cluster’s performance, security, and scalability needs.

Build a production-ready 4-node Kubernetes cluster on Ubuntu 24.04 LTS — from bare VMs to Cilium CNI with Hubble observability. Includes every gotcha we hit so you don't have to.

Is your AI fabric blind? Static ECMP can’t handle Elephant Flows. Learn how BGP NNHN & Global Load Balancing provide the "X-ray vision" needed to stop congestion and maximize your GPU investment.

“If you don't know what's running in your cloud, your wallet does.” When working in AWS, it's easy to spin up infrastructure and forget about it. Between EC2 instances, Lambda functions, NAT Gateways, and S3 buckets, dormant resources can accumulate quickly—and so can

Abstract This blog post presents a standards-based framework for designing data center networks that support artificial intelligence (AI) and machine learning (ML) workloads using Ethernet VPN (EVPN) and Virtual Extensible LAN (VXLAN) technologies. We outline the key network requirements of AI/ML clusters – including high throughput, low latency, and scalability