VLAN
Artificial Intelligence
Why Facebook Runs BGP Everywhere — Even Inside Its Data Centers
An in-depth technical look at Facebook's network infrastructure, including routing protocols, open-source switching, and security architecture, with practical insights for network engineers.
Networking
How Smart Blinds Connect to Your Network: Protocols and Topologies
A network engineer's guide to deploying smart Windows Blinds: VLAN isolation, QoS policies, and security considerations.
CCNA
How to Configure Spanning-Tree Mode: Rapid PVST+
Rapid Per-VLAN Spanning Tree Plus (Rapid PVST+) is Cisco’s per-VLAN implementation of RSTP, and it’s the default spanning tree mode on current Cisco Catalyst hardware, including the 9300 and 9500 series running IOS-XE. This guide walks through configuration, verification, and troubleshooting on Cisco Catalyst switches — whether simulating in Packet Tracer or deploying in production....