在如图所示的交换网络中,三台交换机都只有缺省 VLAN1 ,三台交换机的互联端口都为 Trunk ,且允许所有 VLAN 通过,三台交换机都开启了全局和端口的 GVRP 功能在交换机 SWA 上创建了 VLAN10 ,在 SWC 上创建了 VLAN20 ,并且在交换机 SWA 上设置 Ethemet1/0/1 端口的 GVRP 注册模式为 Fixed ,在三台交换机查看各 Trunk 端口状态信息,下面显示正确的是(选择一项或多项)
A. [SWB] display interface Ethernet 1/0/1 Ethernet1/0/1 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0 ( sec ) Port link-type: trunk VLAN passing: 1 ( default vlan ), 10 , 20 VLAN permitted: 1 ( default vlan ), 2-4094 Trunk port encapsulation: IEEE 802.1q
B. [SWC] display interface Ethernet 1/0/1 Ethernet1/0/1 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0 ( sec ) Port link-type: trunk VLAN passing: 1 ( default vlan ), 10 , 20 VLAN permitted: 1 ( default vlan ), 2-4094 Trunk port encapsulation: IEEE 802.1q
C. [SWA] display interface Ethernet 1/0/1 Ethernet1/0/1 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0 ( sec ) Port link-type: trunk VLAN passing: 1 ( default vlan ), 10 , 20 VLAN permitted: 1 ( default vlan ), 2-4094 Trunk port encapsulation: IEEE 802.1q
D. [SWB] display interface Ethernet 1/0/2 Ethernet1/0/2 current state: UP ...... PVID: 1 Mdi type: auto Link delay is 0 ( sec ) Port link-type: trunk VLAN passing: 1 ( default vlan ), 10 , 20 VLAN permitted: 1 ( default vlan ), 2-4094 Trunk port encapsulation: IEEE 802.1q