Difference between BPDUGuard & BPDU Filtering

Thoses functions could be enabled globally for all PortFast ports :

span portfast bpdufilter default
span portfast bpduguard default

Or by interfaces.

The main difference is :
- Bpdu Guard will shutdown the port if a bpdu is received on a portfast port
- Bpdu filter will prevent inbound and outbound bpdu but will remove portfast state on a port if a bpdu is received.