Packet Tracer Lab: Multi-VLAN Network
A segmented campus network with inter-VLAN routing, DHCP, and access control — built and documented in Cisco Packet Tracer as a teaching reference.
- Networking
- Cisco
- VLANs
- Packet Tracer
IT Instructor • 6 Years in the Field
IT Instructor and Industry Practitioner. I teach networking, security, and systems from 6 years in the field, not from a textbook.
Enterprise IT Support & Operations turned educator. I translate real-world systems into lessons students can actually use.

I spent six years on the front lines of enterprise IT, doing Support and Operations, keeping systems, networks, and end users running. I've deployed and managed fleets of workstations, defended uptime, and dealt with the kind of messy, real-world problems that never show up in a textbook.
Now I'm putting that experience into teaching. What makes me a strong instructor isn't theory, it's that I've actually done the work. I can show students how a concept plays out in a live environment, why it matters, and where it breaks.
I teach bilingually in English and Tagalog, and I've worked with learners at every level, from absolute beginners touching a command line for the first time to students preparing for industry certifications.
I teach the subjects I've lived. Every topic below comes with field stories, live demos, and the context that turns memorization into understanding — delivered bilingually in English and Tagalog.
OSI & TCP/IP models, subnetting, routing & switching, VLANs — with hands-on labs in Cisco Packet Tracer.
PC assembly, troubleshooting, and maintenance aligned to CompTIA A+ competencies.
Core security concepts, threats, hardening, and safe operations practices for everyday IT.
Foundations of programming and problem solving in C, C++, C#, Java, PHP, and SQL.
Delivering live IT lessons — slides, whiteboard, and a full class.



Watch a live teaching demo and see how I break down complex IT topics into clear, practical lessons.
Helping senior high students pick the right course and IT students figure out their next move, straight talk, no sugarcoating. New clips every week.
Six years of doing, not just knowing. Grouped by domain — these are tools and systems I've worked with hands-on in production environments.
Hands-on labs and projects — the kind of work I both do and teach.
A segmented campus network with inter-VLAN routing, DHCP, and access control — built and documented in Cisco Packet Tracer as a teaching reference.
A virtualized Windows Server domain with organizational units, Group Policy, and managed user accounts — used to demo enterprise identity concepts.
A collection of PowerShell and Bash scripts for provisioning, backups, and routine maintenance — refined over years of operations work.
Credentials that back the experience.
CompTIA · 2025
CompTIA
In progressMicrosoft
Oracle
Graduate Studies
In progressHiring for a teaching role, or want to talk shop about IT? I'd love to hear from you.
yt.sirvantes@gmail.com