![How to Lock Down Cisco Switch Ports with Port Security (2025 Guide)[CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/06/nj-blog-post-portsec-switchport.jpg)
Today I’m breaking down a simple yet powerful security mechanism every network admin should understand — Port Security on Cisco switches. Whether you’re working on a small LAN setup or enterprise-grade infrastructure, enforcing MAC address-level access at the port can go a long way in […]
![Default Route Propagation – Your Gateway to the World [CCNP ENTERPRISE]_networkjourney](https://networkjourney.com/wp-content/uploads/2025/07/Default-Route-Propagation-–-Your-Gateway-to-the-World-CCNP-ENTERPRISE.png)
Today, let’s talk about something deceptively simple but absolutely mission-critical in enterprise routing — Default Route Propagation. You know, in my CCNP classes, I often start the routing discussions with: “What happens when a router doesn’t know where to send a packet?” And the answer […]
![Loop Prevention Techniques – Keeping Your Network Stable and Efficient [CCNP ENTERPRISE]_networkjourney](https://networkjourney.com/wp-content/uploads/2025/07/Loop-Prevention-Techniques-–-Keeping-Your-Network-Stable-and-Efficient-CCNP-ENTERPRISE.png)
We’re going to unravel one of the most critical topics in networking — Loop Prevention Techniques. If you’ve ever spent hours troubleshooting unstable networks, flapping routes, or broadcast storms, chances are, you’ve come face-to-face with some sort of looping issue. In the classroom or during […]
![Route Maps vs Prefix Lists – A Deep Dive for Real-World Networking [ CCNP ENTERPRISE ]_networkjourney](https://networkjourney.com/wp-content/uploads/2025/06/Route-Maps-vs-Prefix-Lists-–-A-Deep-Dive-for-Real-World-Networking-CCNP-ENTERPRISE-.png)
If you’ve ever sat there staring at your router’s CLI wondering whether to use a route map or a prefix list, you’re not alone. I’ve seen many students — even working professionals — struggle with this subtle yet powerful decision. Today, I’ll walk you through […]
![Mastering Next-Hop Reachability: A Guide to Smarter Routing Decisions [ CCNP ENTERPRISE ]_networkjourney](https://networkjourney.com/wp-content/uploads/2025/07/Mastering-Next-Hop-Reachability-A-Guide-to-Smarter-Routing-Decisions.png)
Ever been in a situation where a static route pointed to a next-hop that silently disappeared, and your router kept blindly forwarding traffic into a black hole? I’ve seen this happen way too often in production networks! That’s where Next-Hop Reachability Tracking saves the day. […]
![Real-World Use Case of Conditional Routing in Enterprise Networks [ CCNP ENTERPRISE ]](https://networkjourney.com/wp-content/uploads/2025/06/Real-World-Use-Case-of-Conditional-Routing-in-Enterprise-Networks-CCNP-ENTERPRISE-.png)
Can I send traffic based on user type or maybe only during a specific time?” That’s when Conditional Routing enters the game — it’s like having a smart traffic police that directs cars based on who is driving and what the current road conditions are. […]
![Administrative Distance Chart – Explained with CLI, Lab, Use Cases & FAQs [ CCNP ENTERPRISE ]_networkjourney](https://networkjourney.com/wp-content/uploads/2025/06/Administrative-Distance-Chart-–-Explained-with-CLI-Lab-Use-Cases-FAQs-CCNP-ENTERPRISE-.png)
If you’re diving into routing protocols or just wrapping your head around how your router picks the “best” path, you must understand the concept of Administrative Distance (AD). Think of AD like trust levels among friends. You’ve got friends (routing protocols) like OSPF, EIGRP, RIP, […]
![Routing Table Lookup Process – Explained with Lab & CLI [ CCNP ENTERPRISE ]_networkjourney](https://networkjourney.com/wp-content/uploads/2025/06/Routing-Table-Lookup-Process-–-Explained-with-Lab-CLI-CCNP-ENTERPRISE-.png)
Today I’m going to deep-dive into a very important yet often overlooked concept – the Routing Table Lookup Process. Many of my students know how to configure OSPF, BGP, or EIGRP, but when asked “How does a router actually choose the best route when multiple […]
![PBR Configuration with Match Statements [ CCNP ENTERPRISE ]_networkjourney](https://networkjourney.com/wp-content/uploads/2025/06/PBR-Configuration-with-Match-Statements-CCNP-ENTERPRISE-.png)
Ever found yourself in a situation where you wanted to override the default routing decisions of your router? Maybe route specific traffic over a particular WAN link? That’s where Policy-Based Routing (PBR) becomes your best friend. In my experience training hundreds of engineers, I’ve seen […]
![Route Redistribution with Tagging – Mastering Controlled Routing Across Protocols [ CCNP ENTERPRISE ]_networkjourney](https://networkjourney.com/wp-content/uploads/2025/06/Route-Redistribution-with-Tagging-–-Mastering-Controlled-Routing-Across-Protocols-CCNP-ENTERPRISE-.png)
Today we’re diving deep into a topic that often haunts network engineers during real-world implementations and certifications like CCNP or CCIE — Route Redistribution with Tagging. I still remember a consulting project where a simple redistribution misstep created routing loops and service disruption across multiple […]
