某(中小型)校园网设计与配置实例,以实例的形式对校园网络方案进行分析并给出校园网络关键设备配置步骤，配置命令以及诊断命令和方法。-A (small) campus network design and configuration examples.In the form of an example of campus network schemes are analyzed and campus network key equipment configuration steps, configuration commands and diagnostic commands and methods