![IGMP Snooping and Configuration – Mastering Multicast Efficiency [CCNP ENTERPRISE]_networkjourney](https://networkjourney.com/wp-content/uploads/2025/07/IGMP-Snooping-and-Configuration-–-Mastering-Multicast-Efficiency.png)
Today’s article is all about IGMP Snooping—a crucial Layer 2 switch feature that ensures multicast traffic only reaches the devices that actually asked for it. Whether you’re preparing for CCNP or managing an enterprise network, understanding IGMP Snooping is a must. Let’s break it down […]
![Multicast Basics and PIM Overview – Smarter Traffic Delivery in Modern Networks [CCNP Enterprise]_networkjourney](https://networkjourney.com/wp-content/uploads/2025/07/Multicast-Basics-and-PIM-Overview-–-Smarter-Traffic-Delivery-in-Modern-Networks.png)
Have you ever wondered how a single video stream from one server reaches hundreds or even thousands of users without consuming all the bandwidth on your network? That’s where Multicast comes in—it’s like broadcasting but smarter! As a trainer, I often tell my students, “If […]
![QoS Fundamentals for Network Engineers: Boost Performance, Reduce Latency [CCNP Enterprise]](https://networkjourney.com/wp-content/uploads/2025/07/QoS-Fundamentals-for-Network-Engineers_Boost-Performance_Reduce-Latency_networkjourney.png)
If you’ve ever felt overwhelmed by latency-sensitive applications or jittery VoIP calls, you’re in the right place. I’ve walked in your shoes—sifting through packet drops and struggling to maintain performance. Today, let’s dive into Quality of Service (QoS) with a conversational. Theory in Brief What […]
![DSCP vs CoS & Trust Boundary: Network Marking Demystified for Engineers[CCNP Enterprise]](https://networkjourney.com/wp-content/uploads/2025/07/DSCP-vs-CoS-Trust-BoundaryNetwork-Marking-Demystified-for-Engineers_networkjourney.png)
If you’re anything like me, you’ve spent late nights wrestling with traffic marking and trust boundaries—wondering which to use where, and how to keep your network playing nice. It’s like juggling apples, oranges, and cherries—but don’t worry, we’ll make it smooth as butter together. Stick […]
![Configuring QoS on Cisco Devices: Boost Performance & Ensure Traffic Priority [CCNP Enterprise]](https://networkjourney.com/wp-content/uploads/2025/07/Configuring-QoS-on-Cisco-Devices_Boost-Performance_Ensure-Traffic-Priority_networkjourney.png)
I know those moments when your VOIP calls crackle or your video meetings lag during business hours—it’s like trying to have a conversation through a wall! Over the years, I’ve learned that configuring Quality of Service (QoS) on Cisco devices can be a true game-changer. […]
![QOS Diagnose & Fix Network Performance Issues [CCNP Enterprise]](https://networkjourney.com/wp-content/uploads/2025/07/QOS_Diagnose_Fix-Network-Performance-Issues_networkjourney.png)
If you’ve ever hit the panic button because your VoIP calls are choppy or your video stream froze mid-presentation, I feel your pain. Just this morning, I was on a call that sounded like we were underwater—definitely not the crisp audio I expect! That’s when […]
![Mastering Ping and Traceroute: Advanced Options Every Network Engineer Should Know [CCNP Enterprise]](https://networkjourney.com/wp-content/uploads/2025/07/Mastering-Ping-and-Traceroute_Advanced-Options-Every-Network-Engineer-Should-Know_networkjourney.png)
We’re diving into the tools you’ve used since day one—ping and traceroute—but with a twist. These commands are more powerful than most people realize. Sure, you know how to ping a server, but did you know you can set the packet size, use extended options, […]
![Troubleshooting HSRP – How to Detect and Fix Gateway Redundancy Issues [CCNP Enterprise]](https://networkjourney.com/wp-content/uploads/2025/07/Troubleshooting-HSRP-–-How-to-Detect-and-Fix-Gateway-Redundancy-Issues_networkjourney.png)
If you’ve ever set up a highly available network and found that clients were still complaining about packet drops or intermittent internet, there’s a good chance HSRP was either misconfigured or malfunctioning. Troubleshooting HSRP (Hot Standby Router Protocol) can be tricky if you’re not familiar […]
![Troubleshooting STP Flapping: Fix Network Instability with Confidence [CCNP Enterprise]](https://networkjourney.com/wp-content/uploads/2025/07/Troubleshooting-STP-Flapping-Fix-Network-Instability-with-Confidence_networkjourney-1.png)
Today I want to walk you through a problem that many of us face in real-world environments—STP flapping. If you’ve ever dealt with mysterious connectivity drops, unstable MAC tables, or users yelling, “The network is slow!” with no obvious root cause—there’s a good chance Spanning […]
![Mastering SPAN and RSPAN Configuration – A Deep Dive for Real-World Network Monitoring [CCNP Enterprise]](https://networkjourney.com/wp-content/uploads/2025/07/Mastering-SPAN-and-RSPAN-Configuration-–-A-Deep-Dive-for-Real-World-Network-Monitoring_networkjourney.png)
When it comes to network troubleshooting and traffic analysis, capturing the right packets at the right place makes all the difference. How SPAN and RSPAN work behind the scenes—this post is tailor-made for you. Today, we’ll simplify a topic that often looks intimidating in textbooks […]
