Cisco

Introduction Check your Cisco switch warranty status for maintenance planning and support eligibility. This guide will show you exactly how to locate your serial number and verify your warranty status through multiple methods. Prerequisites * Cisco switch physical or remote access * CCO ID (Cisco.com account) for online checking * Basic understanding

Introduction In this lesson, I will explain how to configure, verify, and troubleshoot EtherChannel on Cisco switches. EtherChannel technology combines multiple physical interfaces into a single logical interface, providing increased bandwidth and redundancy for inter-switch connections. Lesson Objectives After completing this lesson, you will be able to: * Understand the different

Introduction In this lesson, I will explain how to configure, manage, and troubleshoot VLANs (Virtual Local Area Networks) on Cisco switches. VLANs are fundamental to network segmentation and security, allowing you to create logical network boundaries within a physical switch infrastructure. Lesson Objectives After completing this lesson, you will be

Introduction In this lesson, I will explain how to implement and manage Per VLAN Spanning Tree (PVST+) on Cisco switches. PVST+ is Cisco’s enhanced version of Spanning Tree Protocol that creates separate spanning-tree instances for each VLAN, enabling better load balancing and more efficient network utilization. Lesson Objectives After

I'd like to share a story that might sound familiar to you. It was 2 AM, and I was staring at my console, seeing that dreaded “VLAN X is down, line protocol is down” message. After years of troubleshooting these issues, I’ve developed a systematic approach I

Let me tell you a story about my biggest CCNA study mistake: waiting too long to start hands-on practice. After weeks of reading books, I realized that configuring routers and switches, even virtual ones, was a game-changer. I’ve since tested every major network simulator out there, and I’m

I remember staring at my computer screen, completely overwhelmed by the mountain of CCNA study materials available. If you’re anything like me, you want to ensure you invest your time and money in the right resources. After passing my CCNA and helping countless others prepare for theirs, I’ve

Intro Recently, I witnessed a network administrator face every IT professional’s nightmare: a core router failure that brought down their payment processing system for 30 minutes. Standing there, watching thousands of transactions evaporate, I knew there had to be a better way. That’s when I dove deep into