Question

A data center engineer configures a Nexus 9000 access port connecting to a bare-metal server. The port is set as an RSTP edge port (spanning-tree port type edge). During testing, a technician accidentally connects a small unmanaged switch into that port, and the switch begins sending BPDUs. The engineer wants to ensure that if any BPDU is received on such edge ports, the port is immediately disabled to protect the topology. Which additional configuration achieves this behavior?

Accepted Answer

Enable BPDU Guard on the edge port so that receiving any BPDU err-disables the port

Answer

Enable BPDU Filter on the edge port so that BPDUs are ignored and the port stays forwarding

Answer

Enable Loop Guard on the edge port to block the port when BPDUs stop arriving

Answer

Enable Root Guard on the edge port to keep it from becoming a root port