If you’ve ever faced STP loops or mystery link flaps in your switching network, you know how frustrating it can be. Early in my networking career, I once spent hours chasing down a looping issue—only to find that someone plugged in a cable between two […]
![Mastering PortFast, BPDU Guard & Loop Guard: STP Protection Techniques Explained with Lab & CLI. [CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/06/Mastering-PortFast-BPDU-Guard-Loop-Guard_networkjourney.png)