A.[SWITCHA] INTERFACE GIGABITETHERNET 1/0/3 [SWITCHA-GIGABITETHERNET1/0/3] PORT LINK-TYPE TRUNK [SWITCHA-GIGABITETHERNET1/0/3] PORT TRUNK ALLOW-PASS VLAN 2 3 B.[SWITCHA] INTERFACE GIGABITETHERNET 1/0/1 [SWITCHA-GIGABITETHERNET1/0/3] PORT LINK-TYPE TRUNK [SWITCHA-GIGABITETHERNET1/0/3] PORT TRUNK ALLOW-PASS VLAN 2 3 C.[SWITCHA] INTERFACE GIGABITETHERNET 1/0/1 [SWITCHA-GIGABITETHERNET1/0/3] PORT LINK-TYPE ACCESS [SWITCHA-GIGABITETHERNET1/0/3] PORT DEFAULT VLAN 2 3 D.[SWITCHA] INTERFACE GIGABITETHERNET 1/0/3 [SWITCHA-GIGABITETHERNET1/0/3] PORT LINK-TYPE ACCESS [SWITCHA-GIGABITETHERNET1/0/3] PORT DEFAULT VLAN 2 3

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题目内容（请给出正确答案）

A.[SWITCHA] INTERFACE GIGABITETHERNET 1/0/3
[SWITCHA-GIGABITETHERNET1/0/3] PORT LINK-TYPE TRUNK
[SWITCHA-GIGABITETHERNET1/0/3] PORT TRUNK ALLOW-PASS VLAN 2 3 B.[SWITCHA] INTERFACE GIGABITETHERNET 1/0/1
[SWITCHA-GIGABITETHERNET1/0/3] PORT LINK-TYPE TRUNK
[SWITCHA-GIGABITETHERNET1/0/3] PORT TRUNK ALLOW-PASS VLAN 2 3 C.[SWITCHA] INTERFACE GIGABITETHERNET 1/0/1
[SWITCHA-GIGABITETHERNET1/0/3] PORT LINK-TYPE ACCESS
[SWITCHA-GIGABITETHERNET1/0/3] PORT DEFAULT VLAN 2 3 D.[SWITCHA] INTERFACE GIGABITETHERNET 1/0/3
[SWITCHA-GIGABITETHERNET1/0/3] PORT LINK-TYPE ACCESS
[SWITCHA-GIGABITETHERNET1/0/3] PORT DEFAULT VLAN 2 3

参考答案

参考解析

解析：试题分析：

要实现上图中跨交换机的Vlan之间的通信，需要配置SwitchA和SwitchB之间的链路类型及通过的VLAN，实现相同业务用户通过SwitchA和SwitchB通信。

[SwitchA] interface gigabitethernet 1/0/3

[SwitchA-GigabitEthernet1/0/3] port link-type trunk //交换机之间相连接口类型建议使用trunk，接口

默认类型不是trunk，需要手动配置为trunk

[SwitchA-GigabitEthernet1/0/3] port trunk allow-pass vlan 2 3 //将接口GE1/0/3加入VLAN 2和VLAN 3

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