Refer to the exhibit. SwitchC connects HR and Sales to the Core switch. However, business needs require that no traffic from the Finance VLAN traverse this switch. Which command meets this requirement?
A.
SwitchC(config)#vtp pruning vlan 110
B.
SwitchC(config)#vtp pruning
C.
SwitchC(config)#interface port-channel 1 SwitchC(config-if)#switchport trunk allowed vlan add 210,310
D.
SwitchC(config)#interface port-channel 1 SwitchC(config-if)#switchport trunk allowed vlan remove 110
pruning statement can only come from server domain, so the only option is to remove the unwanted vlan with switchport trunk allowed vlan remove 110 statement. "D" is correct
before removing vlan10:
sw1#show int tru
Port Mode Encapsulation Status Native vlan
Et0/0 on 802.1q trunking 1
Et0/3 desirable n-isl trunking 1
Po2 on 802.1q trunking 1
Port Vlans allowed on trunk
Et0/0 1-4094
Et0/3 1-4094
Po2 1-4094 <<<<<<<<<<<<<<<<<<<<
Port Vlans allowed and active in management domain
Et0/0 1,10,30,40,50,110
Et0/3 1,10,30,40,50,110
Po2 1,10,30,40,50,110 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
Port Vlans in spanning tree forwarding state and not pruned
Et0/0 1,10,30,40,50,110
Et0/3 1
Po2 1,30,50
sw1#
sw1(config-if)#do s int tr
Port Mode Encapsulation Status Native vlan
Et0/0 on 802.1q trunking 1
Et0/3 desirable n-isl trunking 1
Po2 on 802.1q trunking 1
Port Vlans allowed on trunk
Et0/0 1-4094
Et0/3 1-4094
Po2 1-109,111-4094 <<<<<<<<<<<<<<<<<<
Port Vlans allowed and active in management domain
Et0/0 1,10,30,40,50,110
Et0/3 1,10,30,40,50,110
Po2 1,10,30,40,50 <<<<<<<<<<<<<<<<<<<<<<<<
Port Vlans in spanning tree forwarding state and not pruned
Et0/0 1,10,30,40,50,110
Et0/3 1
Po2 1,30,50
sw1(config-if)#
D is correct, as switch is transparent mode that means vtp prunning can not be enable also not participating on the VTP. the option C is adding vlan but in the image all vlans are already allowed in the trunk, The only option is D as is blocking the undesired vlan from the trunk.
Also, prune mode is configured only on VTP server mode , so option D is 100% correct
upvoted 3 times
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