Which command enhances the 802.1 D convergence time on ports that are connected to hosts?
A.
spanning-tree backbonefast
B.
spanning-tree uplinkfast
C.
spanning-tree portfast
D.
spanni ng-tree costs 12
Which command enhances the 802.1 D convergence time on ports that are connected to hosts?
Which command enhances the 802.1 D convergence time on ports that are connected to hosts?
By using PortFast feature, the port won’t spend 50 seconds to move from blocking (20sec), listening (15sec), learning (15sec) and finally forwarding but will jump directly to the forwarding state. This feature should be used on ports connected to hosts only because hosts surely don’t send BPDU. An example of configuring PortFast on an interface is shown below:
Sw(config)#interface FastEthernet0/1
Sw(config-if)#spanning-tree portfast