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 […]
![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)
![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 The router had no access-lists, no username policy, and was running outdated SSHv1.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 […]
![Introduction to JSON & YANG – The Foundation of Network Automation [CCNP Enterprise]](https://networkjourney.com/wp-content/uploads/2025/07/Introduction-to-JSON_YANG–The-Foundation-of-Network-Automation_networkjourney.png)
You’ve probably heard the terms JSON and YANG thrown around in the world of network automation, but they might still feel like mysterious tech-jargon to some. Trust me—I was there too. In this post, I’ll walk you through what JSON and YANG really mean for […]
![REST API Basics for Cisco Devices – Automate Smarter, Not Harder [CCNP Enterprise]](https://networkjourney.com/wp-content/uploads/2025/07/REST-API-Basics-for-Cisco-Devices-–-Automate-Smarter_Not-Harder_networkjourney.png)
If you’ve ever felt overwhelmed jumping between CLI screens or manually configuring the same changes across dozens of Cisco devices—then it’s time we talk automation. Today, we’re diving into the REST API basics for Cisco devices, a game-changer for anyone looking to modernize their workflow. […]
![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 […]
![Cisco DNA Center APIs – Automating the Network the Smarter Way [CCNP ENTERPRISE]_networkjourney](https://networkjourney.com/wp-content/uploads/2025/07/Cisco-DNA-Center-APIs-–-Automating-the-Network-the-Smarter-Way-1.png)
Today I want to talk to you not just about automation — but next-gen automation that’s transforming enterprise networks across the globe. If you’ve been managing networks manually or using traditional tools like CLI or SNMP, let me introduce you to the game changer: Cisco […]
![Python Script to Pull Interface Status – Your First Step into Network Automation [CCNP ENTERPRISE]_networkjourney](https://networkjourney.com/wp-content/uploads/2025/07/Python-Script-to-Pull-Interface-Status-–-Your-First-Step-into-Network-Automation-1.png)
Today we’re going to take a solid, practical step into real-world network automation using Python. One of the most common and beginner-friendly tasks is to pull interface status from network devices — and trust me, this is the exact use case that sparks automation journeys […]