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.

BGP Unnumbered uses IPv6 Link-Local addresses for peering, eliminating unique IP assignments on transit links. This simplifies network design. See how to configure this modern approach on Cisco NX-OS and Juniper, enabling one session to carry both IPv4 and IPv6 routes.

IPv6’s SLAAC lets devices self-configure without DHCP. Hosts send RS, receive RAs (with prefixes/flags), and build their GUA using a unique Interface ID (EUI-64/Privacy). A quick DAD check confirms uniqueness. It’s simple and stateless.

IPv6 addresses come in flavors. Global Unicast, Link-Local, Unique Local, Multicast, Anycast, Loopback, and Unspecified. Each is identified by its binary prefix and hex pattern, making it easy to spot scope, purpose, and reachability at a glance.

Anycast RP with MSDP brings true redundancy and load sharing to multicast networks. By synchronizing active sources across multiple RPs, it ensures seamless failover and scalability—making multicast delivery resilient for IPTV, trading, and real-time applications.

Multicast‑routing with PIM (Sparse, Dense, SSM, Bidirectional) lets network architects deliver ultra‑low‑latency streams and market‑data feeds. Choose the right mode like SPT via SSM for HFT, shared trees with RP for global video to balance latency, scalability, and security.

IP multicast is the unsung hero of efficient one-to-many communication. Instead of flooding or duplicating streams, multicast delivers content only where it’s needed. This deep dive covers addressing, IGMP, PIM routing, configs, and troubleshooting to make multicast click in real networks.

IS-IS TLVs define how routing information is shared and covering IPv4, IPv6, traffic engineering, and more. This extensible model makes IS-IS a preferred protocol for modern networks. Dive deeper with our Mastering IS-IS series.

BGP route types are the language of VXLAN EVPN. They carry MAC, IP, and reachability info between VTEPs. Understanding them is key for building and troubleshooting EVPN fabrics, whether for multi-homing, L2, L3, or BUM traffic.