![OSPF Area Types Explained: Stub, Totally Stubby & NSSA with CLI, Lab & Real-World Use Cases. [CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/06/OSPF-Area-Types-Explained_Stub_Totally-Stubby_NSSA_networkjourney.png)
If you’ve ever felt confused by OSPF area types—like what makes an area “Stub,” “Totally Stubby,” or “NSSA”—you’re not alone. Many of my CCNP Enterprise trainees get tripped up on these terms, especially when it comes to LSA propagation and route filtering across areas. That’s […]
![Mastering EtherChannel Load Balancing Methods: A Complete Guide with CLI & EVE-NG Lab [CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/06/Mastering-EtherChannel-Load-Balancing-Methods_A-Complete-Guide_networkjourney.png)
we’re diving into one of the most common — yet often misunderstood — areas of switching: EtherChannel Load Balancing Methods. If you’ve ever wondered why your traffic is not using all the available links in your EtherChannel, or if you’re trying to get the most […]
![EIGRP for IPv6 – Routing Smarter in the Next-Gen Network Era. [CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/06/Why-Are-Enterprises-and-Service-Providers-Moving-to-NFV_networkjourney.png)
If you’re someone who loves physical routers, switches, and the feel of plugging in those console cables — I totally get you. I started my journey the same way. But guess what? The world is evolving fast, and the network functions we once ran on […]
![2025 Guide: Overlay vs Underlay in SD-WAN – What’s Changed?[CCNP Enterprise]](https://networkjourney.com/wp-content/uploads/2025/06/Overlay-vs-Underlay-in-SD-WAN_networkjourney-1.png)
If you’re anything like my students or clients, you’ve probably heard the words “overlay” and “underlay” thrown around constantly in the world of SD-WAN. But in 2025, how much do you really understand about how these layers work—and more importantly, how they’ve evolved? Today, we’re […]
![Don’t Let Your Router Crash! Master Control Plane Policing (CoPP) with Labs & CLI [CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/07/nj-blog-post-CoPP.jpg)
Ever had one of those moments where your device just locks up, and you can’t even SSH or ping it anymore—even though the CPU is not maxed out? I’ve been there. As someone who’s spent years deep in the trenches of data centers and campus […]
![Still Using SNMPv2? Here’s Why You Must Switch to SNMPv3 Today! [CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/07/nj-blog-post-snmpv3.jpg)
Let me tell you a quick story before diving into today’s deep-dive. A few years ago, one of my clients had this weird issue—an attacker was sniffing SNMPv2 traffic and using it to map the entire network. The problem? They thought SNMPv2 was “just fine” […]
![Want to Stop Unauthorized Access? SSH and HTTPS Hardening Explained[CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/07/nj-blog-post-ssh-https.jpg)
when was the last time you audited your device’s remote access methods?I still remember the day when a client called me in panic—someone had brute-forced their router via SSH, and guess what? The router had no access-lists, no username policy, and was running outdated SSHv1. […]
![AAA Authentication with TACACS+ and RADIUS – Step-by-Step Cisco Guide [CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/07/nj-blog-post-AAA-TACACS-RADIUS.jpg)
Let me take you back to my early network engineering days. We had 10 routers and 20 engineers—and we used the same username and password across all devices. No logs. No traceability. Just convenience… until one fine day, someone made a change that brought the […]
![Security Zones Explained: From Flat Networks to Fortresses [CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/07/nj-blog-post-security-zone.jpg)
Let’s be honest. At some point, we’ve all created a flat network with just a few VLANs and thought — “Yeh toh kaafi secure hai.” Until… a misconfigured ACL or open port lets someone pivot from the user segment to your server VLAN — and […]
![NETCONF vs RESTCONF – Choosing the Right Protocol for Network Automation [CCNP ENTERPRISE]_networkjourney](https://networkjourney.com/wp-content/uploads/2025/07/NETCONF-vs-RESTCONF-–-Choosing-the-Right-Protocol-for-Network-Automation-1.png)
Today I want to talk about something that every aspiring network automation engineer must know — the difference between NETCONF and RESTCONF. If you’ve been tinkering with Python scripts or exploring tools like Ansible and Postman, you’ve probably stumbled upon these terms. But here’s the […]
