Month: July 2025

Ticket#1-Enterprise Slowness: High CPU on Core Switch – Step-by-Step Troubleshooting [CCNP ENTERPRISE]

Ticket#1-Enterprise Slowness: High CPU on Core Switch – Step-by-Step Troubleshooting [CCNP ENTERPRISE]

Problem Summary A major enterprise customer reported intermittent slowness across...

The Ultimate IPv6 Troubleshooting Guide: Tools, Tips, and Labs [CCNP ENTERPRISE]

The Ultimate IPv6 Troubleshooting Guide: Tools, Tips, and Labs [CCNP ENTERPRISE]

If you’ve ever been stuck with “Why isn’t my IPv6...

Dual Stack vs Tunneling: Which IPv6 Transition Strategy is Right for You? [CCNP ENTERPRISE]

Dual Stack vs Tunneling: Which IPv6 Transition Strategy is Right for You? [CCNP ENTERPRISE]

If you’re reading this, you’re probably at that point in...

Mastering IPv6 Routing: A Complete Guide with Labs, CLI & FAQs [CCNP ENTERPRISE]

Mastering IPv6 Routing: A Complete Guide with Labs, CLI & FAQs [CCNP ENTERPRISE]

If you’re reading this, you’re either deep into the world...

Your First Step into IPv6: Address Types, Labs, CLI & Real-World Use Cases [CCNP ENTERPRISE]

Your First Step into IPv6: Address Types, Labs, CLI & Real-World Use Cases [CCNP Enterprise]

When I started teaching networking years ago, IPv4 was king....

VPN 0 and VPN 512 in Cisco SD-WAN: Backbone & Management Explained[CCNP ENTERPRISE]

VPN 0 and VPN 512 in Cisco SD-WAN: Backbone & Management Explained [CCNP ENTERPRISE]

Today diving deep into a very important, yet often misunderstood...

Performance Routing (PfR) Basics: Optimize Traffic Like a Pro [CCNP ENTERPRISE] networkjourney

Performance Routing (PfR) Basics: Optimize Traffic Like a Pro [CCNP ENTERPRISE]

Today’s article, we’ll dive into one of the most powerful...

Hub-and-Spoke in Modern WANs: Still Relevant in 2025?[ccnp enterprise]

Hub-and-Spoke in Modern WANs: Still Relevant in 2025? [CCNP ENTERPRISE]

Today we’re going back to one of the core building...

DIA vs Centralized Breakout: Which Internet Access Model Is Right for Your SD-WAN Network in 2025?. [CCNP ENTERPRISE]

DIA vs Centralized Breakout: Which Internet Access Model Is Right for Your SD-WAN Network in 2025? [CCNP ENTERPRISE]

If you’re currently designing or managing SD-WAN solutions, you’re probably...