2-STP enhancement Features: Portfast//cisco Packet Tracer

First, the experimental topology:

Second, the experimental requirements:
1, PC0 connection SW1, did not make any changes, see if F0/1 need to wait for 30s to become green;
2, SW1 Global deployment of the default port Acceleration command, while the f0/2-5 deployed as Acess port;
3, PC1~PC4 connection SW1, accelerate, the second into a green port, shorten the 30s, no longer wait.
Third, command deployment:
SW1 (config) #spanning-tree portfast Default! []
SW1 (config) #int range f0/2-5
SW1 (Config-if-range) #switchport mode access

Four, verify:
Dynamic observation, the second turns green

2-STP enhancement Features: Portfast//cisco Packet Tracer