NHPREP Blog
Insights, tutorials, and tips for networking and security professionals.
Advanced SGT Multi-Domain Context: Cross-Domain Security Tags
Deep dive into deploying Security Group Tags across multiple network domains for unified zero trust segmentation and consistent policy enforcement.
Advanced SD-WAN Troubleshooting Lab Guide | NHPREP
Hands-on lab guide for advanced SD-WAN troubleshooting covering control plane faults, data plane tunnel issues, overlay routing, policies, and traffic forwarding.
Advanced SD-WAN Policies and Troubleshooting Guide
Deep-dive into SD-WAN policy architecture, troubleshooting workflows, packet-trace techniques, and real-world failure scenarios with proven solutions.
Advanced LISP and SD-Access Forwarding Architecture
Master the LISP protocol underpinning SD-Access fabric forwarding — from EID/RLOC fundamentals to Border Node, Edge Node, and Control Plane Node configurations.
Advanced Campus Network Design: Multilayer Architectures
Deep dive into multilayer campus network design covering hierarchical models, access/distribution/core layers, platform selection, and enterprise best practices.
ACI PBR Troubleshooting Deep Dive | Policy Based Redirect
Deep dive into troubleshooting ACI Policy Based Redirect service graphs with CLI verification, ELAM triggers, and packet walk analysis across leaf and spine.
ACI Multi-Site Architecture and Deployment Guide
A comprehensive guide to ACI multi-site architecture covering inter-site connectivity, NDO deployment, control and data plane operations, and MTU design.
ACI Infrastructure as Code with Terraform | NHPREP
Master ACI Terraform automation: learn HCL configuration, the ACI provider, resource management, state tracking, and full IaC workflows for data center fabrics.
7 Ways to Fail with Catalyst SD-WAN and How to Fix It
Discover the most common SD-WAN deployment mistakes — from hitting scale limits to misclassified traffic — and learn exactly how to diagnose and fix each one.
7 Habits for Optimizing Your Catalyst Center Environment
Learn 7 proven habits to optimize your Catalyst Center environment covering resiliency, device lifecycle, software upgrades, automation, telemetry, AIOps, and API integrations.
5 Tools to Level Up Your Network Automation Game
Discover 5 must-know tools that transform network engineers into automation professionals: Git, Bash, Vault, Infrastructure as Code, and Containers.
AI & ML for Network Operations: Fundamentals & Use Cases
A comprehensive guide to AI/ML in networking covering neural networks, LLM training, RAG, AIOps use cases, AI-enhanced wireless, and infrastructure as code.