2. 计算机
  3. Cisco Catalyst switches CAT1 and CAT2 have a connection between them using ports FA0/13． An 802．1Q trunk is configured between t

Cisco Catalyst switches CAT1 and CAT2 have a connection between them using ports FA0/13． An 802．1Q trunk is configured between t

admin2019-04-08  23
问题 Cisco Catalyst switches CAT1 and CAT2 have a connection between them using ports FA0/13． An 802．1Q trunk is configured between the two switches． On CAT1, VLAN 10 is chosen as native, but on CAT2 the native VLAN is not specified．What will happen in this scenario?
选项 A、        802．1Q giants frames could saturate the link．
B、        VLAN 10 on CAT1 and VLAN 1 on CAT2 will send untagged frames．
C、        A native VLAN mismatch error message will appear．
D、        VLAN 10 on CAT1 and VLAN 1 on CAT2 will send tagged frames．
答案C
解析 交换机CAT1和CAT2通过F0/13端口连接， 交换机之间封装是的802．1q， 在VLAN10中本征VLAN被修改成了VLAN10,在CAT2上没有指定。这样配置就会出现什么情况?
考点分析：这道题考的是Trunk。Trunk链路的封装要求两边的本征vlan相同，如果不同，会出现VLAN不匹配这个错误。
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