如下图所示,3com和Cisco公司的交换机相互连接,在两台交换机之间需传输VLAN ID为1、10、20和30的4个VLAN信息,Catalyst 3548交换机VLAN Trunk的正确配置是()。
- A.Switch-3548 (config-if) # switchport trunk encapsulation dot1q?
Switch-3548 (config-if) # switchport trunk allowed vlan 1,10,20,30
- B.Switch-3548 (config-if) # switchport mode trunk
Switch-3548 (config-if) # switchport trunk encapsulation isl?
Switch-3548 (config-if) # switchport trunk allowed vlan 1-30
- C.Switch-3548 (config-if) # switchport mode trunk
Switch-3548 (config-if) # switchport trunk encapsulation negotiate?
Switch-3548 (config-if) # switchport trunk allowed vlan 1-30
- D.Switch-3548 (config-if) # switchport mode trunk
Switch-3548 (config-if) # switchport trunk encapsulation dot1q
Switch-3548 (config-if) # switchport trunk allowed vlan 1,10,20,30
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