NHPREP Blog
Insights, tutorials, and tips for networking and security professionals.
Ansible for Cisco Networks: NX-OS, NDFC & IOS-XE Automation
A comprehensive guide to automating Cisco data center and enterprise networks with Ansible, covering NX-OS VXLAN EVPN fabrics, NDFC orchestration, and IOS-XE programmability.
gRPC, gNMI & Model-Driven Telemetry Guide for Network Engineers
Comprehensive guide to gRPC, gNMI, and model-driven telemetry for real-time network monitoring, streaming data collection, and programmable device management.
SD-Access as Code: Automate Fabric with Catalyst Center APIs
Automate SD-Access fabric deployment with Catalyst Center APIs, Terraform, and IaC workflows. Reduce errors, accelerate provisioning, and achieve auditable networks.
SD-Access Fabric Deployment: Design to Day-2 Operations
End-to-end SD-Access fabric guide from requirements gathering through site design, underlay build, overlay provisioning, migration strategy, and day-2 operations.
AI-Powered SD-WAN Operations and Analytics Guide
Discover how AI and ML capabilities in Catalyst SD-WAN enable predictive path recommendations, anomaly detection, bandwidth forecasting, and LLM-powered troubleshooting.
Getting Started with Catalyst SD-WAN: Architecture Guide
A comprehensive beginner guide to Catalyst SD-WAN covering architecture components, overlay protocols, transport colors, security, and deployment workflow.
SD-WAN with Secure Firewall & VPN Integration Guide
A complete guide to integrating Cisco Secure Firewall and VPN services with SD-WAN using IPSec tunnel interfaces, DVTI, and BGP routing for scalable connectivity.
Network Segmentation: TrustSec, SGT & Micro-Segmentation Guide
A comprehensive guide to network segmentation using TrustSec, SGTs, and micro-segmentation strategies across campus, branch, and data center environments.
Catalyst Center Troubleshooting & Zero Trust Deployment Guide
Complete guide to Catalyst Center troubleshooting and Zero Trust deployment covering architecture, CLI tools, inventory sync, SWIM, assurance, upgrades, and endpoint security.
MPLS VPN & L3VPN Lab Guide for Enterprise Networks
Step-by-step MPLS VPN lab guide covering LDP configuration, VRF routing, PE-CE protocols, OSPF domain-ID, sham-links, and extranets for CCIE Enterprise.
BGP Path Selection & Advanced Routing for CCIE EI
Deep-dive into BGP path selection, community attributes, confederations, private AS handling, local-AS, and BFD for CCIE EI preparation.
OSPF Multi-Area Design & Troubleshooting for CCIE Enterprise
A complete guide to OSPF multi-area design covering area types, virtual links, route summarization, LSA filtering, and redistribution for CCIE EI candidates.