Home » Solar Security Spot » What Is Bpdu Guard

What Is Bpdu Guard

Sarah Jenkins • • 8 min read
What Is Bpdu Guard

BPDU Guard feature is used to protect the Layer 2 Spanning Tree Protocol (STP) Topology from BPDU related attacks. … When a BPDU Guard enabled port receive BPDU from the connected device, BPDU Guard disables the port and the port state is changed to Errdisable state.

What is PortFast?

PortFast is a Cisco feature for PVST+ environments. When a switch port is configured with PortFast that port transitions from blocking to forwarding state immediately, bypassing the usual 802.1D STP transition states (the listening and learning states).

Does PortFast port send BPDU?

Part of the myth is also that portfast enabled ports do not send BPDUs. incrementing. Portfast is definitely enabled. … BPDUs are still sent on portfast enabled ports.

Sarah Jenkins
Author

Sarah Jenkins

Sarah Jenkins is a veteran tech journalist with over 12 years of experience covering artificial intelligence, mobile innovations, and digital ethics. Her insights have appeared in leading technology publications worldwide.