Routing and Switch, Data Center Technology, Configuration, Troubleshooting, Setup and Design Architecture.
I recently attended a Fortinet event focused on Operational Technology (OT) and IoT security. Coming from a network architecture background, one thing that stood out to me was how different the priorities of OT environments can be compared to traditional IT networks. In IT, we are used to thinking about patching, authentication, encryption, segmentation, endpoint […]
OT Security – What I Learned About OT Security Read More »
One of the most vital control-plane concepts to master is how OSPF’s Shortest Path First (SPF) algorithm evaluates candidate links during Dijkstra’s tree calculation. It’s easy to assume that OSPF will naturally “prefer” a real multi-access segment over a loopback interface, or that it will detect conflicting subnet advertisements and throw an error. However, SPF
003 CCIE EI Study Notes – Why OSPF Chose the Wrong Route? Read More »
The 40-Second Rule That Can Surprise Every OSPF Student Part of my CCIE Enterprise Infrastructure Journey One of the first things we learn about OSPF Designated Router (DR) and Backup Designated Router (BDR) election is simple: the router with the highest OSPF priority wins. If there’s a tie, the router with the highest Router ID
002 CCIE EI Study Notes – Why the First 40 Seconds Decide your OSPF DR/BDR Read More »
OSPF Explained Like You’re Traveling Across the Philippines “Part of my CCIE Enterprise Infrastructure Journey.” I remember concepts much better when I can visualize them. So instead of memorizing Link State Advertisements, DR elections, and SPF calculations, I imagined traveling across the Philippines. Oddly enough… It made OSPF much easier to understand. Let’s start from
001 CCIE EI Study Notes – OSPF Explained Read More »
The Hook: Busting the Myth Let’s start with a reality check that 90% of networking articles get wrong: Distance Vector protocols aren’t the ones eating your CPU. If you are running RIP or EIGRP, your router is essentially “routing by rumor.” It takes a neighbor’s word for it, drops it in a table, and moves
The Day 1,000 OSPF Neighbors Killed ASR Router Read More »
Introduction For many months—or maybe even a year now—I’ve been wondering if I’d ever get the chance to add Cisco DNA Center (now Cisco Catalyst Center) to my home lab. At first, it felt like a huge “how?” The biggest challenge wasn’t just figuring out the installation process, but also meeting the hardware requirements… and
Installing Catalyst Center (DNAC) 2.3.5 on Proxmox (Budget Friendly?) Read More »
Today, let’s talk about wireless design and the key components used in enterprise networks. This is a summary of what I’ve learned from my research and, of course, a little bit of “YouTube University” 😄 Multi-Gigabit Ethernet and Future-Proofing Network Switches The use of multi-gigabit ports supporting 1, 2.5, 5, and 10 Gbps on switches
Wi-Fi End-to-End Design & Components Read More »
In day 2, I focused on Equal Cost Multi-Path (ECMP) of Fortigate but let me dig deep into the design – architecture aspect. first, this post is just my personal view and unlocking further about the ECMP. ECMP job is pretty simple. Its job is to move packets from a source to a destination using
Equal Cost Multi-Path(ECMP) Design – Architecture Aspect Read More »
Key Takeaway FGCP provides fast, reliable High Availability One logical firewall with a ready standby Designed for seamless failover and minimal disruption https://youtu.be/Gp7_WIDFCBw
FortiGate Clustering Protocol (FGCP) Read More »
Time to brush up on Microsoft Azure, especially since I’m preparing for the AZ-900 certification. While searching for learning resources, I stumbled upon Adam Marczak’s YouTube videos. They were a lifesaver—explaining complex Azure concepts in a way that even beginners like me could grasp. As I began exploring, I realized I need to see things
My Journey into Microsoft Azure Read More »
