在配置trunk接口时出现如下错误,用翻译软件翻译为(本人英语不好):命令被拒绝:接口的中继封装是“自动”不能被配置的“主干”模式。
Switch(config-if)#switchport mode trunk
Command rejected: An interface whose trunk encapsulation is "Auto" can not be configured to "trunk" mode.
Switch(config-if)#int fa0/12
Switch(config-if)#switchport mode trunk
Command rejected: An interface whose trunk encapsulation is "Auto" can not be configured to "trunk" mode.请问到底哪里出了问题,求大神解决^_^