SwitchB为三层交换机，SwitchA为二层交换机，现在要实现研发部和质量部之间的互通，要求SwitchB使用子接口形式实现的配置如下：
……
# 使连接三层交换机的接口使用trunk方式透传VLAN。
[SwitchA] interface gigabitethernet 1/0/5 //(1)
[SwitchA-GigabitEthernet1/0/5] (2)
[SwitchA-GigabitEthernet1/0/5] port trunk allow-pass (3)
[SwitchA-GigabitEthernet1/0/5] quit
#接下来配置三层交换机SwitchB,利用子接口对应不同Vlan的网关
＜HUAWEI> system-view
[HUAWEI] sysname SwitchB //修改设备的名称为SwitchB
[SwitchB] interface gigabitethernet 1/0/1
[SwitchB-GigabitEthernet1/0/1] （4） //配置链路类型为hybrid
[SwitchB-GigabitEthernet1/0/1] quit
[SwitchB] （5） //创建子接口并进入子接口视图
[SwitchB-GigabitEthernet1/0/1.1] （6） //子接口对应接入VLAN 2
[SwitchB-GigabitEthernet1/0/1.1] （7） //设置相应的IP地址
[SwitchB-GigabitEthernet1/0/1.1] arp broadcast enable //终结子接口默认直接丢弃广播报文，因此需要配置子接口可以转发ARP广播报文的功能
[SwitchB-GigabitEthernet1/0/1.1] quit
[SwitchB] interface gigabitethernet 1/0/1.2 //创建子接口并进入子接口视图
[SwitchB-GigabitEthernet1/0/1.2] dot1q termination vid 3 //子接对应接入VLAN 3
[SwitchB-GigabitEthernet1/0/1.2] ip address 2.2.2.1 24
[SwitchB-GigabitEthernet1/0/1.2] （8）
[SwitchB-GigabitEthernet1/0/1.2] quit
正确答案及解析
正确答案
解析
（1）进入接口视图 （2）port link-type trunk? （3）vlan2 3 或者vlan 2 to 3 （4）? port link-type hybrid? （5）interface gigabitethernet 1/0/1.1? （6） dot1q termination vid 2 （7）ip address 1.1.1.1 24 或者）ip address 1.1.1.1 255.255.255.0?
（8） arp broadcast enable
【解析】
试题分析：
这类题一定要注意上下文，会有很多可以相互提示的信息，另外，对于接口的编号问题，注意前面提示符的提示。完整的配置形式如下：# 创建VLAN。＜HUAWEI> system-view[HUAWEI] sysname SwitchA //修改设备的名称为SwitchA，便于识别[SwitchA] vlan batch 2 to 3 //批量创建VLAN 2和VLAN 3# 将连接Host的接口加入相应VLAN。[SwitchA] interface gigabitethernet 1/0/1[SwitchA-GigabitEthernet1/0/1] port link-type access //将与PC相连接口的接口类型设置为access[SwitchA-GigabitEthernet1/0/1] port default vlan 2 //将Host A划分到VLAN 2[SwitchA-GigabitEthernet1/0/1] quit。。。。。#其他接口如1/0/2到1/0/4，配置类似1/0/1的配置。注意下一下即可。?# 使连接三层交换机的接口透传相应VLAN。[SwitchA] interface gigabitethernet 1/0/5[SwitchA-GigabitEthernet1/0/5] port link-type trunk //将与交换设备相连接口的接口类型设置为trunk[SwitchA-GigabitEthernet1/0/5] port trunk allow-pass vlan 2 to 3 //透传VLAN 2和VLAN 3[SwitchA-GigabitEthernet1/0/5] quit接下来配置三层交换机SwitchB＜HUAWEI> system-view[HUAWEI] sysname SwitchB //修改设备的名称为SwitchB[SwitchB] interface gigabitethernet 1/0/1[SwitchB-GigabitEthernet1/0/1] port link-type hybrid //V200R005之前版本，不需要手动配置链路类型为hybrid[SwitchB-GigabitEthernet1/0/1] quit[SwitchB] interface gigabitethernet 1/0/1.1 //创建子接口并进入子接口视图[SwitchB-GigabitEthernet1/0/1.1] dot1q termination vid 2 //子接口GE1/0/1.1对应接入VLAN 2[SwitchB-GigabitEthernet1/0/1.1] ip address 1.1.1.1 24[SwitchB-GigabitEthernet1/0/1.1] arp broadcast enable //终结子接口默认直接丢弃广播报文，因此需要配置子接口可以转发ARP广播报文的功能[SwitchB-GigabitEthernet1/0/1.1] quit[SwitchB] interface gigabitethernet 1/0/1.2 //创建子接口并进入子接口视图[SwitchB-GigabitEthernet1/0/1.2] dot1q termination vid 3 //子接口GE1/0/1.2对应接入VLAN 3[SwitchB-GigabitEthernet1/0/1.2] ip address 2.2.2.1 24[SwitchB-GigabitEthernet1/0/1.2] arp broadcast enable[SwitchB-GigabitEthernet1/0/1.2] quit
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